75 Watt HD Dual Series DC/DC Converters Features Small size 2.4" x 2.28" x 0.55" Excellent thermal performance with metal baseplate Non-latching over voltage shutdown Pulse-by-pulse current limiting, short circuit foldback Over-temperature protection Auto-softstart Low noise Constant frequency for normal operation. 2:1 input voltage range Positive logic primary remote ON/OFF Very low temperature coefficient Description Water Washable The HD Dual Series DC/DC family provides two independent and precisely regulated low output voltage converters in one package reducing cost and saving board space. The HD Series meets rigorous requirements in an industry standard 1/2 brick package, and is well suited for telecom and industrial applications. Trimmable output voltages Low cost 5 Year Warranty Both outputs are rated for a maximum of 10 Amps, thus providing many possible output load combinations with a total output power of 75 Watts. The remote trim function on each output can be used to compensate for voltage drops between the converter and the load at higher currents. Selection Chart The HD Series includes a primary remote on/off for power conservation. The HD package features threaded-through holes to allow for easy mounting or the addition of a heat sink for extended temperature operation. Input Range VD C V out VD C Min Max V1 V2 I out ADC * 24D5.3R3HD 18 36 5 3.3 10 24D3.2R5HD 18 36 3.3 2.5 10 Model * The output currents are the maximum ratings of each of the outputs. It is up to the user to keep the total power output at or below the 75 Watt rating of the package. ** For other output voltages and 48 Volt input models contact the factory. A 2401 Stanwell Drive * Concord, California 94520 * Ph: 925/687-4411 or 800/542-3355 * Fax: 925/687-3333 * www.calex.com * Email: sales@calex.com 1 eco#: 060615-3, 061207-3, 070612-5 75 Watt HD Dual Series DC/DC Converters Unless otherwise stated, these specifications apply for ambient temperature TA=23 2C, nominal input voltage, and full load. (1) (2) Input Parameters Model 24D5.3R3HD Voltage Range Input Overvoltage 100 mSec Input Ripple Rejection (120Hz) Undervoltage Lockout Units 18 24 36 VD C MAX 50 VD C TYP 50 dB Yes Input Reverse Voltage Protection Input Current No Load TYP 100% Load TYP Inrush Current MAX Reflected Ripple, 12H TYP Source Impedance (4) Efficiency TYP Switching Frequency TYP Recommended Fuse 24D3.2R5HD MIN TYP MAX Yes 0.5 mA A A2 S 20 mA P-P 12 3.91 12 3.85 81 80 % 360 kHz (3) AMPS NOTES: (1) (2) (3) (4) (5) (6) (7) (8) (9) Refer to the CALEX Application Notes for the definition of terms, measurement circuits, and other information. Full Load is defined as the main output operating at 10 Amps. The auxiliary output is loaded to bring output power to 75 Watts, or loaded to 10 Amps maximum. This unit is not fused and needs to be fused by the user. Refer to the CALEX Application Notes for information on fusing. For inrush current, refer to the specifications above. Place a 33 uF capacitor between the two "Input" pins. Then place the current sensor in series with a 12 H inductor between the capacitor and the source (current sensor is located between the converter input pins and the 12H inductor). The reflected ripple current is measured over a 5 Hz to 20 MHz bandwidth. Noise should be minimized in the measurement. Noise is measured per the CALEX Application Notes. Output noise is measured with a 10 F tantalum capacitor in parallel with a 0.1 F ceramic capacitor connected across the output to CMN. Measurement bandwidth is 0-20 MHz. Optimum performance is obtained when this power supply is operated within the minimum to maximum load specifications. No damage to the module will occur when the output is operated at less than minimum load, but the output voltage may contain a low frequency component that may exceed output noise specifications. At no load the converter's V1 output voltage may fall out of regulation, typically rising to the OVP limit. A load current of between 0.5% to 1% of maximum rated load on any of the outputs will usually suffice to bring V1 within regulation. Load Transient Recovery Time is defined as the time for the output to settle from a 50 to 75% or 25% step load change to a 1% error band of output voltage(rise time of step = 2Sec). Load Transient Overshoot is defined as the peak overshoot during a transient as defined in the Note 7 above. (10) (11) (12) (13) (14) (15) Load regulation is defined as the output voltage change when changing load current from maximum to minimum. The voltage is measured at the output pin. Most switches would be suitable for logic On/Off control, in case there is a problem, you can make following estimations and then leave some margin. When open collector is used for logic high, "Open Circuit Voltage at On/Off Pin", "Output Resistance" and "External Leakage Current Allowed for Logic High" are used to estimate the high impedance requirement of open collector. When switch is used for logic low, "Open Circuit Voltage at On/ Off Pin", "Output Resistance" and "LOW Logic Level" are used to estimate the low impedance requirement of switch. Thermal impedance is tested with the converter mounted vertically and facing another printed circuit board 1/2 inch away. If converter is mounted horizontally with no obstructions, thermal impedance is approximately 7 C/W. Minimum load is defined as 10% of maximum load. Calex Mfg. Co. Inc. does not guarantee performance for loads less than the minimum. Loads less than the minimum shall not damage the unit. When an external On/Off switch is used, such as open collector switch, logic high requires the switch to be high-impedance. Switch leakage currents greater than 10 uA may be sufficient to trigger the ON/Off to the logic-low state. Water Washability - Calex DC/DC converters are designed to withstand most solder/wash processes. Careful attention should be used when assessing the applicability in your specific manufacturing process. Converters are not hermetically sealed. Torque fasteners into threaded mounting inserts at 12 in. oz. or less. Greater torque may result in damage to unit and void the warranty. A 2401 Stanwell Drive * Concord, California 94520 * Ph: 925/687-4411 or 800/542-3355 * Fax: 925/687-3333 * www.calex.com * Email: sales@calex.com 2 eco#: 060615-3, 061207-3, 070612-5 75 Watt HD Dual Series DC/DC Converters Unless otherwise stated, these specifications apply for ambient temperature TA=23 2C, nominal input voltage, and full load. (1) (2) Output Parameters Model Output Voltage Output Voltage Setpoint Accuracy Turn On Overshoot Temperature Coefficient Noise & Ripple (5) Load Current (6) (12) Load Transient Overshoot (8) Load Transient Recover y Time (7) Load Regulation (9) Min-Max Load Line Regulation Vin = Min-Max Over voltage Protection (OVP) Threshhold OVP Type - Non-latching Open Loop Over voltage Clamp Output Current Limit V out=90% of V out-nom Output Shor t Circuit Current V out = 0.25 V (V1) 24D 5.3R 3H D 24D 3.2R 5H D U nits 5 3.3 VDC MAX 1 % TYP TYP MAX TYP MAX MIN MAX TYP TYP TYP MAX TYP MAX 0 0.003 0.01 % 50 100 %/C 33 66 mV P-P 1.0 10.0 4 100 0.5 1 0.1 0.5 A % Sec % % TYP 130 % TYP 120 % TYP 175 % Output Parameters (V2) Model 24D5.3R3HD 24D3.2R5HD U nits 3.3 2.5 VDC Output Voltage Output Voltage Setpoint Accuracy MAX 3.0 % Turn On Overshoot TYP 0 % Temperature Coefficient TYP MAX 0.02 0.05 %/C Noise & Ripple (5) TYP MAX Load Current (6) MIN MAX 0.2 10.0 Load Transient Overshoot (8) TYP 4 Load Regulation (9) Min-Max Load TYP MAX 0.5 1 % Line Regulation Vin = Min-Max TYP MAX 0.5 1 % 33 66 25 50 mV P-P A A % 2401 Stanwell Drive * Concord, California 94520 * Ph: 925/687-4411 or 800/542-3355 * Fax: 925/687-3333 * www.calex.com * Email: sales@calex.com 3 eco#: 060615-3, 061207-3, 070612-5 75 Watt HD Dual Series DC/DC Converters General Specifications All Models Units Primary Remote ON/OFF Function HIGH Logic Level for ON MIN 3.0 VDC External Leakage Current MAX Allowed for Logic High (14) 10 A Input Diode Protection Voltage MAX 50 VDC LOW Logic Level MAX or Tie ON/OFF Pin to -Input 1.0 VDC 500 A 2.3 1.5 VDC VDC Sinking Current for Primary MAX Logic Level Open Circuit Voltage at Primary On/Off Pin (10) Positive Logic TYP Negative Logic TYP Output Resistance (10) TYP 3 k Ohm Idle Current (Module is OFF) TYP 2 mADC Turn-on Time to 1% error TYP 20 HIGH - Module ON LOW - Module OFF mSec Mechanical tolerances unless otherwise noted: X.XX dimensions: 0.020 inches Remote ON/OFF Logic X.XXX dimensions: 0.005 inches Pin Output Voltage Trim Trim Range MIN MAX 5 % of Vout Input Resistance TYP 10 k Ohm Open Circuit Voltage TYP 2.5 V MAX 105 % of Vout MAX 700 VDC MIN 10 Mohm TYP 1800 pF >1,000,000 Hr Function Pin Function 1 CASE 6 + V2 2 - INPUT 7 V2 TRIM 3 + INPUT 8 - V1 4 ON/OFF 9 V1 TRIM 5 - V2 10 + V1 Trim Limit Maximum Output Voltage Isolation Input to Output Isolation 10A Leakage Input to Output Resistance Input to Output Capacitance Environmental Calculated MTBF, Bellcore Method 1, Case 1 Baseplate Operating Temperature Range Storage Temperature Thermal Impedance (11) General Unit Weight Chassis Mounting Kit Case Dimension Agency Approvals MIN MAX MIN MAX TYP -40 100 -40 120 7 C/W TYP 4/114 oz/g A C C MS25 2.4" x 2.28" x 0.55" UL60950 pending 2401 Stanwell Drive * Concord, California 94520 * Ph: 925/687-4411 or 800/542-3355 * Fax: 925/687-3333 * www.calex.com * Email: sales@calex.com 4 eco#: 060615-3, 061207-3, 070612-5