YNC05S20 DC-DC Converter Data Sheet 4.5-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 20A The Products: Y-Series Features Applications Intermediate Bus Architectures Telecommunications Data communications Distributed Power Architectures Servers, workstations Benefits High efficiency - no heat sink required Reduces total solution board area Tape and reel packing Compatible with pick & place equipment Minimizes part numbers in inventory RoHS lead free solder and lead solder exempted products are available Delivers up to 20 A (66 W) Surface-mount package Industry-standard footprint and pinout Small size and low profile: 1.30" x 0.53" x 0.314" (33.02 x 13.46 x 7.98 mm) Weight: 0.22 oz [6.12 g] Coplanarity less than 0.003", maximum Synchronous Buck Converter topology Source and sink capable Start-up into pre-biased output No minimum load required Programmable output voltage via external resistor Operating ambient temperature: -40 C to 85 C Remote output sense Remote ON/OFF (positive or negative) Fixed-frequency operation Auto-reset output overcurrent protection Auto-reset overtemperature protection High reliability, MTBF = TBD Million Hours All materials meet UL94, V-0 flammability rating UL 60950 recognition in U.S. & Canada, and DEMKO certification per IEC/EN 60950 Description Power-One's point-of-load converters are recommended for use with regulated bus converters in an Intermediate Bus Architecture (IBA). The YNC05S20 non-isolated DC-DC converter delivers up to 20 A of output current in an industry-standard surface-mount package. Operating from a 4.5 - 5.5V input, this converter is an ideal choice for Intermediate Bus Architectures where point-of-load power delivery is preferred. It provides an extremely-tight, regulated programmable output voltage of 0.7525 V to 3.63 V. The YNC05S20 converter provides exceptional thermal performance, even in high temperature environments with minimal airflow. This is accomplished through the use of patent pending circuits, packaging, and processing techniques to achieve ultra-high efficiency and excellent thermal management. The preclusion of heat sinks minimizes impedance to system airflow, thus enhancing cooling for both upstream and downstream devices. The use of 100% automation for assembly, coupled with advanced power electronics and thermal design, results in a product with extremely high reliability. MCD10187 Rev. 1.0, 21-Jun-10 Page 1 of 26 www.power-one.com YNC05S20 DC-DC Converter Data Sheet 4.5-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 20A Electrical Specifications Conditions: TA=25 C, Airflow=200 LFM (1 m/s), Vin= 5 VDC, Vout = 0.7525 - 3.63 V, unless otherwise specified. PARAMETER ABSOLUTE MAXIMUM RATINGS Input Voltage NOTES MIN Continuous TYP -0.3 MAX UNITS 6 VDC Operating Ambient Temperature -40 85 C Storage Temperature -55 125 C FEATURE CHARACTERISTICS Switching Frequency 300 Output Voltage Programming Range 1 Remote Sense Compensation Turn-On Delay Time 1 2 By external resistor, See Trim Table 1 0.7525 kHz 3.63 0.5 VDC VDC Full resistive load With Vin = (Module Enabled, then Vin applied) From Vin = Vin(min) to Vo=0.1* Vo(nom) 3.5 ms With Enable (Vin = Vin(nom) applied, then enabled) From enable to Vo= 0.1*Vo(nom) 3.5 ms From 10% to 90%, full resistive load 3.5 ms Rise time 2 ON/OFF Control (Positive Logic) 3 Module Off -5 0.8 VDC Module On 2.4 5.5 VDC ON/OFF Control (Negative Logic) 3 Module Off 2.4 5.5 VDC Module On -5 0.8 VDC Note: 1. The output voltage should not exceed 3.63 V (taking into account both the programming and remote sense compensation). 2. Note that start-up time is the sum of turn-on delay time and rise time. 3. Module is on if ON/OFF pin is left open. MCD10187 Rev. 1.0, 21-Jun-10 Page 2 of 26 www.power-one.com YNC05S20 DC-DC Converter Data Sheet 4.5-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 20A Electrical Specifications (continued) Conditions: TA=25 C, Airflow=200 LFM (1 m/s), Vin =5 VDC, Vout = 0.7525 - 3.63 V, unless otherwise specified. PARAMETER INPUT CHARACTERISTICS NOTES Operating Input Voltage Range MIN TYP MAX UNITS 4.5 5.0 5.5 VDC 2.05 2.15 VDC Input Undervoltage Lockout Turn-on Threshold Turn-off Threshold 1.75 1.9 VDC Maximum Input Current Vin = 4.5 V, Iout = 20 A VOUT = 3.3 VDC 15.5 Vin = 4.5 V, Iout = 20 A VOUT = 2.5 VDC 12.1 ADC ADC Vin = 4.5 V, Iout = 20 A VOUT = 2.0 VDC 9.8 ADC Vin = 4.5 V, Iout = 20 A VOUT = 1.8 VDC 9.0 ADC Vin = 4.5 V, Iout = 20 A VOUT = 1.5 VDC 7.6 ADC Vin = 4.5 V, Iout = 20 A VOUT = 1.2 VDC 6.3 ADC Vin = 4.5 V, Iout = 20 A VOUT = 1.0 VDC 5.3 Vin = 4.5 V, Iout = 20 A Input Stand-by Current (Module disabled) Input No Load Current (Module enabled) VOUT = 0.7525 VDC Vin = 5.0 VDC 4.4 ADC ADC 10 mA VOUT = 3.3 VDC 80 mA VOUT = 2.5 VDC 80 mA VOUT = 2.0 VDC 75 mA VOUT = 1.8 VDC 72 mA VOUT = 1.5 VDC 65 mA VOUT = 1.2 VDC 60 mA VOUT = 1.0 VDC 50 mA VOUT = 0.7525 VDC 48 mA Vin = 5.5 VDC Input Reflected-Ripple Current - is See Fig. E for setup. (BW = 20 MHz) TBD mAP-P Input Voltage Ripple Rejection 120 Hz TBD dB MCD10187 Rev. 1.0, 21-Jun-10 Page 3 of 26 www.power-one.com YNC05S20 DC-DC Converter Data Sheet 4.5-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 20A Electrical Specifications (continued) Conditions: TA=25C, Airflow=200 LFM (1 m/s), Vin=5 VDC, Vout = 0.7525 - 3.63V, unless otherwise specified. PARAMETER OUTPUT CHARACTERISTICS NOTES Output Voltage Set Point (no load) MIN TYP -1.5 Vout MAX UNITS +1.5 %Vout Output Regulation Over Line Full resistive load Over Load Output Voltage Range (Over all operating input voltage, resistive load and temperature conditions until end of life ) From no load to full load Output Ripple and Noise - 20 MHz bandwidth (Fig. E) Over line, load and temperature mV %Vout +2.5 %Vout 60 80 mVP-P 30 40 mVP-P 1,000 F 5,000 F -2.5 Peak-to-Peak (3.3 V output) Peak-to-Peak (0.7525 V output) External Load Capacitance 2 0.3 Plus full load (resistive) Min ESR > 1 m Min ESR > 10 m Output Current Range 0 Output Current Limit Inception (IOUT) Output Short- Circuit Current Short=10 m, continuous 20 A 27 A 6 Arms 140 mV DYNAMIC RESPONSE Load current change from 10 A - 20 A, di/dt = 5 A/s Co = 100 F ceramic + 470 F POS Settling Time (VOUT < 10% peak deviation) 80 s Unloading current change 20 A - 10A, di/dt = -5 A/s Co = 100 F ceramic + 470 F POS 140 mV Settling Time (VOUT < 10% peak deviation) 80 s VOUT = 3.3 VDC 94.0 % VOUT = 2.5 VDC 92.0 % VOUT = 2.0 VDC 90.5 % VOUT = 1.8 VDC 89.5 % VOUT = 1.5 VDC 88.0 % VOUT = 1.2 VDC 85.5 % VOUT = 1.0 VDC 83.6 % VOUT = 0.7525 VDC 76.8 % EFFICIENCY MCD10187 Rev. 1.0, 21-Jun-10 Full load (20 A) Page 4 of 26 www.power-one.com YNC05S20 DC-DC Converter Data Sheet 4.5-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 20A Operation TM Vin Input and Output Impedance R* The YNC05S20 converter should be connected via a low impedance to the DC power source. In many applications, the inductance associated with the distribution from the power source to the input of the converter can affect the stability of the converter. It is recommended to use decoupling capacitors in order to ensure stability of the converter and reduce input ripple voltage. The converter has an internal input capacitance of 52 F with very low ESR ceramic capacitors. In a typical application, low - ESR tantalum or POS capacitors will be sufficient to provide adequate ripple voltage filtering at the input of the converter. However, very low ESR ceramic capacitors of 100-200F are recommended at the input of the converter in order to minimize the input ripple voltage. They should be placed as close as possible to the input pins of the converter. YNC05S20 has been designed for stable operation with or without external capacitance. Low ESR ceramic capacitors (minimum 100 F) placed as close as possible to the load are recommended for improved transient performance and lower output voltage ripple. It is important to keep low resistance and low inductance PCB traces when connecting the load to the output pins of the converter in order to maintain good load regulation. ON/OFF (Pin 1) The ON/OFF pin is used to turn the power the converter on or off remotely via a system signal that is referenced to GND. Typical connections are shown in Fig. A. To turn the converter on the ON/OFF pin should be at a logic low or left open, and to turn the converter off the ON/OFF pin should be at a logic high or connected to Vin. MCD10187 Rev. 1.0, 21-Jun-10 Page 5 of 26 Nex -c Series Converter SENSE (Top View) ON/OFF Vout Vin Rload GND TRIM CONTROL INPUT R* is for negative logic option only Fig. A: Circuit configuration for ON/OFF function. The positive logic version turns the converter on when the ON/OFF pin is at a logic high or left open, and turns the converter off when at a logic low or shorted to GND. The negative logic version turns the converter on when the ON/OFF pin is at a logic low or left open, and turns the converter off when the ON/OFF pin is at a logic high or connected to Vin. ON/OFF pin is internally pulled-up to Vin for a positive logic version, and pulled-down for a negative logic version. A TTL or CMOS logic gate, open collector (open drain) transistor can be used to drive ON/OFF pin. When using open collector (open drain) transistor with a negative logic option, add a pull-up resistor (R*) of 10 k to Vin as shown in Fig. C. External pull-up resistor (R*) can be increased to 20 k if minimum input voltage is more than 4.5V. This device must be capable of: - sinking up to 0.6 mA at a low level voltage of 0.8 V - sourcing up to 0.25 mA at a high logic level of 2.3V - 5.5V. Remote Sense (Pin 2) The remote sense feature of the converter compensates for voltage drops occurring only between Vout pin (Pin 4) of the converter and the load. The SENSE (Pin 2) pin should be connected at the load or at the point where regulation is required (see Fig. B). There is no sense feature on the output GND return pin, where a solid ground plane is recommended to provide a low voltage drop. www.power-one.com YNC05S20 DC-DC Converter Data Sheet 4.5-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 20A Vin TM Nex -c Series Converter SENSE (Top View) ON/OFF TM Nex -c Series Converter Vin SENSE (Top View) Rw Vout ON/OFF Vin Vout Vin Rload Rload GND TRIM GND TRIM RTRIM Rw Fig. B: Remote sense circuit configuration. Fig. C: Configuration for programming output voltage. If remote sensing is not required, the SENSE pin must be connected to the Vout pin (Pin 4) to ensure the converter will regulate at the specified output voltage. If these connections are not made, the converter will deliver an output voltage that is slightly higher than the specified value. A trim resistor, RTRIM, for a desired output voltage can be calculated using the following equation: Because the sense lead carries minimal current, large trace on the end-user board are not required. However, sense trace should be located close to a ground plane to minimize system noise and insure optimum performance. When utilizing the remote sense feature, care must be taken not to exceed the maximum allowable output power capability of the converter, equal to the product of the nominal output voltage and the allowable output current for the given conditions. When using remote sense, the output voltage at the converter can be increased up to 0.5 V above the nominal rating in order to maintain the required voltage across the load. Therefore, the designer must, if necessary, decrease the maximum current (originally obtained from the derating curves) by the same percentage to ensure the converter's actual output power remains at or below the maximum allowable output power. RTRIM 21.07 5.11 (VO -REQ - 0.7525) [k] where, RTRIM Required value of trim resistor [k] VOREQ Desired (trimmed) output voltage [V] Note that the tolerance of a trim resistor directly affects the output voltage tolerance. It is recommended to use standard 1% or 0.5% resistors; for tighter tolerance, two resistors in parallel are recommended rather than one standard value from Table 1. Ground pin of the trim resistor should be connected directly to the converter GND pin (Pin 5) with no voltage drop in between. Table 1 provides the trim resistor values for popular output voltages. Table 1: Trim Resistor Value The Closest V0-REG [V] RTRIM [k] Standard Value [k] 0.7525 open Output Voltage Programming (Pin 3) 1.0 80.02 80.6 1.2 41.97 42.2 The output voltage can be programmed from 0.7525 V to 3.63 V by connecting an external resistor between TRIM pin (Pin 3) and GDN pin (Pin 5); see Fig. C. Note that when a trim resistor is not connected, the output voltage of the converter is 0.7525 V. 1.5 23.08 23.2 1.8 15.00 15.0 2.0 11.78 11.8 2.5 6.95 6.98 3.3 3.16 3.16 3.63 2.21 2.21 MCD10187 Rev. 1.0, 21-Jun-10 Page 6 of 26 www.power-one.com YNC05S20 DC-DC Converter Data Sheet 4.5-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 20A The output voltage can be also programmed by external voltage source. To make trimming less sensitive, a series external resistor Rext is recommended between TRIM pin and programming voltage source. Control Voltage can be calculated by the formula: VCTRL (5.11 REXT)(VO -REQ - 0.7525) 0. 7 30.1 Overtemperature Protection (OTP) [V] where, VCTRL Control voltage [V] REXT External resistor between TRIM pin and voltage source; the value can be chosen depending on the required output voltage range [k] Control voltages with REXT 0 and REXT 15K are shown in Table 2. Table 2: Control Voltage [VDC] V0-REG [V] VCTRL (REXT = 0) VCTRL (REXT = 15 K) 0.7525 0.700 0.700 1.0 0.658 0.535 1.2 0.624 0.401 1.5 0.573 0.201 1.8 0.522 0.000 2.0 0.488 -0.133 2.5 0.403 -0.468 3.3 0.268 -1.002 3.63 0.212 -1.223 The converter will shut down under an overtemperature condition to protect itself from overheating caused by operation outside the thermal derating curves, or operation in abnormal conditions such as system fan failure. After the converter has cooled to a safe operating temperature, it will automatically restart. Safety Requirements The converter meets North American and international safety regulatory requirements per UL60950 and EN60950. The maximum DC voltage between any two pins is Vin under all operating conditions. Therefore, the unit has ELV (extra low voltage) output; it meets SELV requirements under the condition that all input voltages are ELV. The converter is not internally fused. To comply with safety agencies requirements, a recognized fuse with a maximum rating of 25 Amps must be used in series with the input line. Characterization General Information Protection Features Input Undervoltage Lockout Input undervoltage lockout is standard with this converter. The converter will shut down when the input voltage drops below a pre-determined voltage; it will start automatically when Vin returns to a specified range. The input voltage must be at least 2.15 V for the converter to turn on. Once the converter has been turned on, it will shut off when the input voltage drops below typically 1.9 V. Output Overcurrent Protection (OCP) MCD10187 Rev. 1.0, 21-Jun-10 The converter is protected against over-current and short circuit conditions. Upon sensing an overcurrent condition, the converter will enter hiccup mode. Once the overload or short-circuit condition is removed, Vout will return to nominal value. Page 7 of 26 The converter has been characterized for many operational aspects, to include thermal derating (maximum load current as a function of ambient temperature and airflow) for vertical and horizontal mounting, efficiency, start-up and shutdown parameters, output ripple and noise, transient response to load step-change, overload, and short circuit. The figures are numbered as Fig. x.y, where x indicates the different output voltages, and y associates with specific plots (y = 1 for the vertical thermal derating, ...). For example, Fig. x.1 will www.power-one.com YNC05S20 DC-DC Converter Data Sheet 4.5-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 20A refer to the vertical thermal derating for all the output voltages in general. The following pages contain specific plots or waveforms associated with the converter. Additional comments for specific data are provided below. varied between 25 C and 85 C, with airflow rates from 30 to 500 LFM (0.15m/s to 2.5 m/s), and vertical and horizontal converter mounting. The airflow during the testing is parallel to the short axis of the converter, going from pin 1 and pin 6 to pins 2 - 5. For each set of conditions, the maximum load current was defined as the lowest of: Test Conditions All thermal and efficiency data presented were taken with the converter soldered to a test board, specifically a 0.060" thick printed wiring board (PWB) with four layers. The top and bottom layers were not metalized. The two inner layers, comprising two-ounce copper, were used to provide traces for connectivity to the converter. (i) The output current at which any MOSFET temperature does not exceed a maximum specified temperature (120 C) as indicated by the thermographic image, or The lack of metalization on the outer layers as well as the limited thermal connection ensured that heat transfer from the converter to the PWB was minimized. This provides a worst-case but consistent scenario for thermal derating purposes. During normal operation, derating curves with maximum FET temperature less than or equal to 120 C should not be exceeded. Temperature on the PCB at the thermocouple location shown in Fig. D should not exceed 120 C in order to operate inside the derating curves. (ii) The maximum current rating of the converter (20 A) All measurements requiring airflow were made in vertical and horizontal wind tunnel facilities using Infrared (IR) thermography and thermocouples for thermometry. Ensuring components on the converter do not exceed their ratings is important to maintaining high reliability. If one anticipates operating the converter at or close to the maximum loads specified in the derating curves, it is prudent to check actual operating temperatures in the application. Thermographic imaging is preferable; if this capability is not available, then thermocouples may be used. Power-One recommends the use of AWG #40 gauge thermocouples to ensure measurement accuracy. Careful routing of the thermocouple leads will further minimize measurement error. Refer to Fig. D for optimum measuring thermocouple location. Fig. D: Location of the thermocouple for thermal testing. Efficiency Fig. x.3 show the efficiency vs. load current plot for ambient temperature of 25 C, airflow rate of 200 LFM (1 m/s) and input voltages of 4.5 V, 5.0 V, and 5.5 V. Power Dissipation Thermal Derating Load current vs. ambient temperature and airflow rates are given in Figs. x.1 to x.2 for maximum temperature of 120 C. Ambient temperature was MCD10187 Rev. 1.0, 21-Jun-10 Page 8 of 26 Fig. x.4 show the power dissipation vs. load current plot for Ta = 25 C, airflow rate of 200 LFM (1 m/s) with vertical mounting and input voltages of 4.5 V, 5.0 V, and 5.5 V. www.power-one.com YNC05S20 DC-DC Converter Data Sheet 4.5-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 20A Ripple and Noise The output voltage ripple waveform is measured at full rated load current. Note that all output voltage waveforms are measured across a 1 F ceramic capacitor. The output voltage ripple and input reflected ripple current waveforms are obtained using the test setup shown in Fig. E. iS 1 H source inductance Vsource TM Nex -s Series CIN 4x47F ceramic capacitor DC/DC Converter 1F ceramic capacitor CO 100F ceramic capacitor Vout Fig. E: Test setup for measuring input reflected ripple currents, is and output voltage ripple. MCD10187 Rev. 1.0, 21-Jun-10 Page 9 of 26 www.power-one.com 25 25 20 20 Load Current [Adc] Load Current [Adc] YNC05S20 DC-DC Converter Data Sheet 4.5-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 20A 15 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 10 5 15 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 10 5 0 0 20 30 40 50 60 70 80 20 90 30 40 Fig. 3.3V.1: Available load current vs. ambient temperature and airflow rates for Vout = 3.3 V converter mounted vertically with Vin = 5 V, air flowing from pin 1 and pin 6 to pins 2 - 5, and maximum MOSFET temperature 120 C. 60 70 80 90 Fig. 3.3V.2: Available load current vs. ambient temperature and airflow rates for Vout = 3.3 V converter mounted horizontally with Vin = 5 V, air flowing from pin 1 and pin 6 to pins 2 - 5, and maximum MOSFET temperature 120 C. 1.00 5 0.95 4 Power Dissipation [W] Efficiency 50 Ambient Temperature [C] Ambient Temperature [C] 0.90 0.85 5.5 V 5.0 V 4.5 V 0.80 3 2 5.5 V 5.0 V 4.5 V 1 0 0.75 0 4 8 12 16 20 24 4 8 12 16 20 24 Load Current [Adc] Load Current [Adc] Fig. 3.3V.3: Efficiency vs. load current and input voltage for Vout = 3.3 V converter mounted vertically with air flowing from pin 1 and pin 6 to pins 2 - 5 at a rate of 200 LFM (1 m/s) and Ta = 25 C. MCD10187 Rev. 1.0, 21-Jun-10 0 Page 10 of 26 Fig. 3.3V.4: Power loss vs. load current and input voltage for Vout = 3.3 V converter mounted vertically with air flowing from pin 1 and pin 6 to pins 2 - 5 at a rate of 200 LFM (1 m/s) and Ta = 25 C. www.power-one.com YNC05S20 DC-DC Converter Data Sheet 4.5-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 20A Fig. 3.3V.5: Turn-on transient for Vout = 3.3 V with application of Vin at full rated load current (resistive) and 100 F external capacitance at Vin = 5 V. Top trace: Vin (5 V/div.); Bottom trace: output voltage (1 V/div.); Time scale: 2 ms/div. Fig. 3.3V.6: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with external capacitance 100 F ceramic + 1 F ceramic and Vin = 5 V for Vout = 3.3 V. Time scale: 2 s/div. Fig. 3.3V.7: Output voltage response for Vout = 3.3 V to positive load current step change from 10 A to 20 A with slew rate of 5 A/s at Vin = 5 V. Top trace: output voltage (100 mV/div.); Bottom trace: load current (10 A/div.). Co = 100 F ceramic. Time scale: 20 s/div. Fig. 3.3V.8: Output voltage response for Vout = 3.3 V to negative load current step change from 20 A to 10 A with slew rate of -5 A/s at Vin = 5 V. Top trace: output voltage (100 mV/div.); Bottom trace: load current (10 A/div.). Co = 100 F ceramic. Time scale: 20 s/div. MCD10187 Rev. 1.0, 21-Jun-10 Page 11 of 26 www.power-one.com 25 25 20 20 Load Current [Adc] Load Current [Adc] YNC05S20 DC-DC Converter Data Sheet 4.5-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 20A 15 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 10 5 15 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 10 5 0 0 20 30 40 50 60 70 80 90 20 30 40 Ambient Temperature [C] 50 60 70 80 90 Ambient Temperature [C] Fig. 2.5V.1: Available load current vs. ambient temperature and airflow rates for Vout = 2.5 V converter mounted vertically with Vin = 5 V, air flowing from pin 1 and pin 6 to pins 2 - 5, and maximum MOSFET temperature 120 C. Fig. 2.5V.2: Available load current vs. ambient temperature and airflow rates for Vout = 2.5 V converter mounted horizontally with Vin = 5 V, air flowing from pin 1 and pin 6 to pins 2 - 5, and maximum MOSFET temperature 120 C. 1.00 5 0.95 4 Power Dissipation [W] Efficiency 0.90 0.85 5.5 V 5.0 V 4.5 V 0.80 4 8 12 16 20 24 Load Current [Adc] 5.5 V 5.0 V 4.5 V 0 0 4 8 12 16 20 24 Load Current [Adc] Fig. 2.5V.3: Efficiency vs. load current and input voltage for Vout = 2.5 V converter mounted vertically with air flowing from pin 1 and pin 6 to pins 2 - 5 at a rate of 200 LFM (1 m/s) and Ta = 25 C. MCD10187 Rev. 1.0, 21-Jun-10 2 1 0.75 0 3 Page 12 of 26 Fig. 2.5V.4: Power loss vs. load current and input voltage for Vout = 2.5 V converter mounted vertically with air flowing from pin 1 and pin 6 to pins 2 - 5 at a rate of 200 LFM (1 m/s) and Ta = 25 C. www.power-one.com YNC05S20 DC-DC Converter Data Sheet 4.5-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 20A Fig. 2.5V.5: Turn-on transient for Vout = 2.5 V with application of Vin at full rated load current (resistive) and 100 F external capacitance at Vin = 5 V. Top trace: Vin (5 V/div.); Bottom trace: output voltage (1 V/div.); Time scale: 2 ms/div. Fig. 2.5V.6: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with external capacitance 100 F ceramic + 1 F ceramic and Vin = 5 V for Vout = 2.5 V. Time scale: 2 s/div. Fig. 2.5V.7: Output voltage response for Vout = 2.5 V to positive load current step change from 10 A to 20 A with slew rate of 5 A/s at Vin = 5 V. Top trace: output voltage (100 mV/div.); Bottom trace: load current (10 A/div.). Co = 100 F ceramic. Time scale: 20 s/div. Fig. 2.5V.8: Output voltage response for Vout = 2.5 V to negative load current step change from 20 A to 10 A with slew rate of -5 A/s at Vin = 5 V. Top trace: output voltage (100 mV/div.); Bottom trace: load current (10 A/div.). Co = 100 F ceramic. Time scale: 20 s/div. MCD10187 Rev. 1.0, 21-Jun-10 Page 13 of 26 www.power-one.com 25 25 20 20 Load Current [Adc] Load Current [Adc] YNC05S20 DC-DC Converter Data Sheet 4.5-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 20A 15 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 10 5 15 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 10 5 0 0 20 30 40 50 60 70 80 20 90 30 40 50 60 70 80 90 Ambient Temperature [C] Ambient Temperature [C] Fig. 2.0V.1: Available load current vs. ambient temperature and airflow rates for Vout = 2.0 V converter mounted vertically with Vin = 5 V, air flowing from pin 1 and pin 6 to pins 2 - 5, and maximum MOSFET temperature 120 C. Fig. 2.0V.2: Available load current vs. ambient temperature and airflow rates for Vout = 2.0 V converter mounted horizontally with Vin = 5 V, air flowing from pin 1 and pin 6 to pins 2 - 5, and maximum MOSFET temperature 120 C. 1.00 5 0.95 4 Power Dissipation [W] Efficiency 0.90 0.85 5.5 V 5.0 V 4.5 V 0.80 3 2 5.5 V 5.0 V 4.5 V 1 0.75 0 0 4 8 12 16 20 24 Load Current [Adc] 4 8 12 16 20 24 Load Current [Adc] Fig. 2.0V.3: Efficiency vs. load current and input voltage for Vout = 2.0 V converter mounted vertically with air flowing from pin 1 and pin 6 to pins 2 - 5 at a rate of 200 LFM (1 m/s) and Ta = 25 C. MCD10187 Rev. 1.0, 21-Jun-10 0 Page 14 of 26 Fig. 2.0V.4: Power loss vs. load current and input voltage for Vout = 2.0 V converter mounted vertically with air flowing from pin 1 and pin 6 to pins 2 - 5 at a rate of 200 LFM (1 m/s) and Ta = 25 C. www.power-one.com YNC05S20 DC-DC Converter Data Sheet 4.5-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 20A Fig. 2.0V.5: Turn-on transient for Vout = 2.0 V with application of Vin at full rated load current (resistive) and 100 F external capacitance at Vin = 5 V. Top trace: Vin (5 V/div.); Bottom trace: output voltage (1 V/div.); Time scale: 2 ms/div. Fig. 2.0V.6: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with external capacitance 100 F ceramic + 1 F ceramic and Vin = 5 V for Vout = 2.0 V. Time scale: 2 s/div. Fig. 2.0V.7: Output voltage response for Vout = 2.0 V to positive load current step change from 10 A to 20 A with slew rate of 5 A/s at Vin = 5 V. Top trace: output voltage (100 mV/div.); Bottom trace: load current (10 A/div.). Co = 100 F ceramic. Time scale: 20 s/div. Fig. 2.0V.8: Output voltage response for Vout = 2.0 V to negative load current step change from 20 A to 10 A with slew rate of -5 A/s at Vin = 5 V. Top trace: output voltage (100 mV/div.); Bottom trace: load current (10 A/div.). Co = 100 F ceramic. Time scale: 20 s/div. MCD10187 Rev. 1.0, 21-Jun-10 Page 15 of 26 www.power-one.com 25 25 20 20 Load Current [Adc] Load Current [Adc] YNC05S20 DC-DC Converter Data Sheet 4.5-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 20A 15 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 10 5 15 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 10 5 0 0 20 30 40 50 60 70 80 20 90 30 40 50 60 70 80 90 Ambient Temperature [C] Ambient Temperature [C] Fig. 1.8V.1: Available load current vs. ambient temperature and airflow rates for Vout = 1.8 V converter mounted vertically with Vin = 5 V, air flowing from pin 1 and pin 6 to pins 2 - 5, and maximum MOSFET temperature 120 C. Fig. 1.8V.2: Available load current vs. ambient temperature and airflow rates for Vout = 1.8 V converter mounted horizontally with Vin = 5 V, air flowing from pin 1 and pin 6 to pins 2 - 5, and maximum MOSFET temperature 120 C. 1.00 5 0.95 4 Power Dissipation [W] Efficiency 0.90 0.85 5.5 V 5.0 V 4.5 V 0.80 3 2 5.5 V 5.0 V 4.5 V 1 0 0.75 0 4 8 12 16 20 0 24 Fig. 1.8V.3: Efficiency vs. load current and input voltage for Vout = 1.8 V converter mounted vertically with air flowing from pin 1 and pin 6 to pins 2 - 5 at a rate of 200 LFM (1 m/s) and Ta = 25 C. MCD10187 Rev. 1.0, 21-Jun-10 4 8 12 16 20 24 Load Current [Adc] Load Current [Adc] Page 16 of 26 Fig. 1.8V.4: Power loss vs. load current and input voltage for Vout = 1.8 V converter mounted vertically with air flowing from pin 1 and pin 6 to pins 2 - 5 at a rate of 200 LFM (1 m/s) and Ta = 25 C. www.power-one.com YNC05S20 DC-DC Converter Data Sheet 4.5-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 20A Fig. 1.8V.5: Turn-on transient for Vout = 1.8 V with application of Vin at full rated load current (resistive) and 100 F external capacitance at Vin = 5 V. Top trace: Vin (5 V/div.); Bottom trace: output voltage (1 V/div.); Time scale: 2 ms/div. Fig. 1.8V.6: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with external capacitance 100 F ceramic + 1 F ceramic and Vin = 5 V for Vout = 1.8 V. Time scale: 2 s/div. Fig. 1.8V.7: Output voltage response for Vout = 1.8 V to positive load current step change from 10 A to 20 A with slew rate of 5 A/s at Vin = 5 V. Top trace: output voltage (100 mV/div.); Bottom trace: load current (10 A/div.). Co = 100 F ceramic. Time scale: 20 s/div. Fig. 1.8V.8: Output voltage response for Vout = 1.8 V to negative load current step change from 20 A to 10 A with slew rate of -5 A/s at Vin = 5 V. Top trace: output voltage (100 mV/div.); Bottom trace: load current (10 A/div.). Co = 100 F ceramic. Time scale: 20 s/div. MCD10187 Rev. 1.0, 21-Jun-10 Page 17 of 26 www.power-one.com 25 25 20 20 Load Current [Adc] Load Current [Adc] YNC05S20 DC-DC Converter Data Sheet 4.5-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 20A 15 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 10 5 15 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 10 5 0 0 20 30 40 50 60 70 80 20 90 30 40 50 60 70 80 90 Ambient Temperature [C] Ambient Temperature [C] Fig. 1.5V.1: Available load current vs. ambient temperature and airflow rates for Vout = 1.5 V converter mounted vertically with Vin = 5 V, air flowing from pin 1 and pin 6 to pins 2 - 5, and maximum MOSFET temperature 120 C. Fig. 1.5V.2: Available load current vs. ambient temperature and airflow rates for Vout = 1.5 V converter mounted horizontally with Vin = 5 V, air flowing from pin 1 and pin 6 to pins 2 - 5, and maximum MOSFET temperature 120 C. 1.00 5 0.95 4 Power Dissipation [W] Efficiency 0.90 0.85 5.5 V 5.0 V 4.5 V 0.80 3 2 5.5 V 5.0 V 4.5 V 1 0.75 0 0 4 8 12 16 20 24 Load Current [Adc] 4 8 12 16 20 24 Load Current [Adc] Fig. 1.5V.3: Efficiency vs. load current and input voltage for Vout = 1.5 V converter mounted vertically with air flowing from pin 1 and pin 6 to pins 2 - 5 at a rate of 200 LFM (1 m/s) and Ta = 25 C. MCD10187 Rev. 1.0, 21-Jun-10 0 Page 18 of 26 Fig. 1.5V.4: Power loss vs. load current and input voltage for Vout = 1.5 V converter mounted vertically with air flowing from pin 1 and pin 6 to pins 2 - 5 at a rate of 200 LFM (1 m/s) and Ta = 25 C. www.power-one.com YNC05S20 DC-DC Converter Data Sheet 4.5-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 20A Fig. 1.5V.5: Turn-on transient for Vout = 1.5 V with application of Vin at full rated load current (resistive) and 100 F external capacitance at Vin = 5 V. Top trace: Vin (5 V/div.); Bottom trace: output voltage (1 V/div.); Time scale: 2 ms/div. Fig. 1.5V.6: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with external capacitance 100 F ceramic + 1 F ceramic and Vin = 5 V for Vout = 1.5 V. Time scale: 2 s/div. Fig. 1.5V.7: Output voltage response for Vout = 1.5 V to positive load current step change from 10 A to 20 A with slew rate of 5 A/s at Vin = 5 V. Top trace: output voltage (100 mV/div.); Bottom trace: load current (10 A/div.). Co = 100 F ceramic. Time scale: 20 s/div. Fig. 1.5V.8: Output voltage response for Vout = 1.5 V to negative load current step change from 20 A to 10 A with slew rate of -5 A/s at Vin = 5 V. Top trace: output voltage (100 mV/div.); Bottom trace: load current (10 A/div.). Co = 100 F ceramic. Time scale: 20 s/div. MCD10187 Rev. 1.0, 21-Jun-10 Page 19 of 26 www.power-one.com 25 25 20 20 Load Current [Adc] Load Current [Adc] YNC05S20 DC-DC Converter Data Sheet 4.5-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 20A 15 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 10 5 15 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 10 5 0 0 20 30 40 50 60 70 80 20 90 30 40 50 60 70 80 90 Ambient Temperature [C] Ambient Temperature [C] Fig. 1.2V.1: Available load current vs. ambient temperature and airflow rates for Vout = 1.2 V converter mounted vertically with Vin = 5 V, air flowing from pin 1 and pin 6 to pins 2 - 5, and maximum MOSFET temperature 120 C. Fig. 1.2V.2: Available load current vs. ambient temperature and airflow rates for Vout = 1.2 V converter mounted horizontally with Vin = 5 V, air flowing from pin 1 and pin 6 to pins 2 - 5, and maximum MOSFET temperature 120 C. 0.95 5 0.90 4 Power Dissipation [W] Efficiency 0.85 0.80 5.5 V 5.0 V 4.5 V 0.75 3 2 5.5 V 5.0 V 4.5 V 1 0.70 0 0 4 8 12 16 20 24 0 Load Current [Adc] 8 12 16 20 24 Load Current [Adc] Fig. 1.2V.3: Efficiency vs. load current and input voltage for Vout = 1.2 V converter mounted vertically with air flowing from pin 1 and pin 6 to pins 2 - 5 at a rate of 200 LFM (1 m/s) and Ta = 25 C. MCD10187 Rev. 1.0, 21-Jun-10 4 Page 20 of 26 Fig. 1.2V.4: Power loss vs. load current and input voltage for Vout = 1.2 V converter mounted vertically with air flowing from pin 1 and pin 6 to pins 2 - 5 at a rate of 200 LFM (1 m/s) and Ta = 25 C. www.power-one.com YNC05S20 DC-DC Converter Data Sheet 4.5-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 20A Fig. 1.2V.5: Turn-on transient for Vout = 1.2 V with application of Vin at full rated load current (resistive) and 100 F external capacitance at Vin = 5 V. Top trace: Vin (5 V/div.); Bottom trace: output voltage (1 V/div.); Time scale: 2 ms/div. Fig. 1.2V.6: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with external capacitance 100 F ceramic + 1 F ceramic and Vin = 5 V for Vout = 1.2 V. Time scale: 2 s/div. Fig. 1.2V.7: Output voltage response for Vout = 1.2 V to positive load current step change from 10 A to 20 A with slew rate of 5 A/s at Vin = 5 V. Top trace: output voltage (100 mV/div.); Bottom trace: load current (10 A/div.). Co = 100 F ceramic. Time scale: 20 s/div. Fig. 1.2V.8: Output voltage response for Vout = 1.2 V to negative load current step change from 20 A to 10 A with slew rate of -5 A/s at Vin = 5 V. Top trace: output voltage (100 mV/div.); Bottom trace: load current (10 A/div.). Co = 100 F ceramic. Time scale: 20 s/div. MCD10187 Rev. 1.0, 21-Jun-10 Page 21 of 26 www.power-one.com 25 25 20 20 Load Current [Adc] Load Current [Adc] YNC05S20 DC-DC Converter Data Sheet 4.5-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 20A 15 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 10 5 15 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 10 5 0 0 20 30 40 50 60 70 80 20 90 30 40 50 60 70 80 90 Ambient Temperature [C] Ambient Temperature [C] Fig. 1.0V.1: Available load current vs. ambient temperature and airflow rates for Vout = 1.0 V converter mounted vertically with Vin = 5 V, air flowing from pin 1 and pin 6 to pins 2 - 5, and maximum MOSFET temperature 120 C. Fig. 1.0V.2: Available load current vs. ambient temperature and airflow rates for Vout = 1.0 V converter mounted horizontally with Vin = 5 V, air flowing from pin 1 and pin 6 to pins 2 - 5, and maximum MOSFET temperature 120 C. 0.95 5 0.90 4 Power Dissipation [W] Efficiency 0.85 0.80 5.5 V 5.0 V 4.5 V 0.75 3 2 5.5 V 5.0 V 4.5 V 1 0.70 0 0 4 8 12 16 20 24 Load Current [Adc] 4 8 12 16 20 24 Load Current [Adc] Fig. 1.0V.3: Efficiency vs. load current and input voltage for Vout = 1.0 V converter mounted vertically with air flowing from pin 1 and pin 6 to pins 2 - 5 at a rate of 200 LFM (1 m/s) and Ta = 25 C. MCD10187 Rev. 1.0, 21-Jun-10 0 Page 22 of 26 Fig. 1.0V.4: Power loss vs. load current and input voltage for Vout = 1.0 V converter mounted vertically with air flowing from pin 1 and pin 6 to pins 2 - 5 at a rate of 200 LFM (1 m/s) and Ta = 25 C. www.power-one.com YNC05S20 DC-DC Converter Data Sheet 4.5-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 20A Fig. 1.0V.5: Turn-on transient for Vout = 1.0 V with application of Vin at full rated load current (resistive) and 100 F external capacitance at Vin = 5 V. Top trace: Vin (5 V/div.); Bottom trace: output voltage (1 V/div.); Time scale: 2 ms/div. Fig. 1.0V.6: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with external capacitance 100 F ceramic + 1 F ceramic and Vin = 5 V for Vout = 1.0 V. Time scale: 2 s/div. Fig. 1.0V.7: Output voltage response for Vout = 1.0 V to positive load current step change from 10 A to 20 A with slew rate of 5 A/s at Vin = 5 V. Top trace: output voltage (100 mV/div.); Bottom trace: load current (10 A/div.). Co = 100 F ceramic. Time scale: 20 s/div. Fig. 1.0V.8: Output voltage response for Vout = 1.0 V to negative load current step change from 20 A to 10 A with slew rate of -5 A/s at Vin = 5 V. Top trace: output voltage (100 mV/div.); Bottom trace: load current (10 A/div.). Co = 100 F ceramic. Time scale: 20 s/div. MCD10187 Rev. 1.0, 21-Jun-10 Page 23 of 26 www.power-one.com 25 25 20 20 Load Current [Adc] Load Current [Adc] YNC05S20 DC-DC Converter Data Sheet 4.5-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 20A 15 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 10 5 15 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 10 5 0 0 20 30 40 50 60 70 80 20 90 30 40 50 60 70 80 90 Ambient Temperature [C] Ambient Temperature [C] Fig. 0.7525V.1: Available load current vs. ambient temperature and airflow rates for Vout = 0.7525 V converter mounted vertically with Vin = 5 V, air flowing from pin 1 and pin 6 to pins 2 - 5, and maximum MOSFET temperature 120 C. Fig. 0.7525V.2: Available load current vs. ambient temperature and airflow rates for Vout = 0.7525 V converter mounted horizontally with Vin = 5 V, air flowing from pin 1 and pin 6 to pins 2 - 5, and maximum MOSFET temperature 120 C. 0.95 5 0.90 4 Power Dissipation [W] Efficiency 0.85 0.80 5.5 V 5.0 V 4.5 V 0.75 3 2 5.5 V 5.0 V 4.5 V 1 0.70 0 0 4 8 12 16 20 24 Load Current [Adc] 4 8 12 16 20 24 Load Current [Adc] Fig. 0.7525V.3: Efficiency vs. load current and input voltage for Vout = 0.7525 V converter mounted vertically with air flowing from pin 1 and pin 6 to pins 2 - 5 at a rate of 200 LFM (1 m/s) and Ta = 25 C. MCD10187 Rev. 1.0, 21-Jun-10 0 Page 24 of 26 Fig. 0.7525V.4: Power loss vs. load current and input voltage for Vout = 0.7525 V converter mounted vertically with air flowing from pin 1 and pin 6 to pins 2 - 5 at a rate of 200 LFM (1 m/s) and Ta = 25 C. www.power-one.com YNC05S20 DC-DC Converter Data Sheet 4.5-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 20A Fig. 0.7525V.5: Turn-on transient for Vout = 0.7525 V with application of Vin at full rated load current (resistive) and 100 F external capacitance at Vin = 5 V. Top trace: Vin (5 V/div.); Bottom trace: output voltage (1 V/div.); Time scale: 2 ms/div. Fig. 0.7525V.7: Output voltage response for Vout = 0.7525 V to positive load current step change from 10 A to 20 A with slew rate of 5 A/s at Vin = 5 V. Top trace: output voltage (100 mV/div.); Bottom trace: load current (10 A/div.). Co = 100 F ceramic. Time scale: 20 s/div. MCD10187 Rev. 1.0, 21-Jun-10 Page 25 of 26 Fig. 0.7525V.6: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with external capacitance 100 F ceramic + 1 F ceramic and Vin = 5 V for Vout = 0.7525 V. Time scale: 2 s/div. Fig. 0.7525V.8: Output voltage response for Vout = 0.7525 V to negative load current step change from 20 A to 10 A with slew rate of -5 A/s at Vin = 5 V. Top trace: output voltage (100 mV/div.); Bottom trace: load current (10 A/div.). Co = 100 F ceramic. Time scale: 20 s/div. www.power-one.com YNC05S20 DC-DC Converter Data Sheet 4.5-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 20A Physical Information Pad/Pin Connections 2 3 4 Pad/Pin # 1 2 3 4 5 6 5 1(*) 6 TOP VIEW Function ON/OFF SENSE TRIM Vout GND Vin YNC05S20 Platform Notes (*) PIN # 1 ROTATED 90 SIDE VIEW All dimensions are in inches [mm] Connector Material: Copper Connector Finish: Gold over Nickel Module Weight: 0.22 oz [6.12 g] Module Height: 0.327" Max., 0.301" Min. Recommended Surface-Mount Pads: Min. 0.080" X 0.112" [2.03 x 2.84] YNC05S20 Pinout (Surface Mount) Converter Part Numbering Scheme Product Series Input Voltage Mounting Scheme Rated Load Current YNC 05 S 20 Enable Logic - 0 0 Standard (Positive Logic) Y-Series 4.5 to 5.5 VDC S Surfacemount 20 A (0.7525 V to 3.63 V) Environmental D Opposite of Standard (Negative Logic) No Suffix RoHS lead solder exemption compliant G RoHS compliant for all six substances The example above describes P/N YNC05S20-0: 4.5V - 5.5 V input, surface mount, 20 A at 0.7525 V to 3.63 V output, standard enable logic and RoHS lead solder exemption. Please consult factory regarding availability of a specific version. NUCLEAR AND MEDICAL APPLICATIONS - Power-One products are not designed, intended for use in, or authorized for use as critical components in life support systems, equipment used in hazardous environments, or nuclear control systems without the express written consent of the respective divisional president of Power-One, Inc. TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the date manufactured. Specifications are subject to change without notice. MCD10187 Rev. 1.0, 21-Jun-10 Page 26 of 26 www.power-one.com