Technical Reference Notes ALQ15XX48X Series (Open Frame Dual Output Quarter Brick) ALQ15 Dual Output Open-Frame DC-DC Converter Module Industry Standard 1/4 Brick: 36V-75V Input / 60W Output Power The ALQ15 series is Astec's latest dual output; high-density converter offering that comes in an industry standard 1/4 brick open-frame package. With its independently controlled output rails, the module practically eliminates cross regulation effects which has been an issue to most dual converters available in the market. The ALQ15 series has been designed to deliver 60W of clean, well-regulated, low noise DC power for today's demanding loads at respectable efficiency levels: 3.3V-2.5V combination @ 87% (60W output power). Output combinations currently available are 3.3V/2.5V - 3.3V/1.8V - 2.5V/1.5V, with each output rail able to deliver 15A max. The module comes with standard feature sets such as output enable with positive or negative options; output voltage-adjust; over current, over voltage and over temperature protection. In addition, it is also being offered at both 5mm (std) and 3.7mm pin lengths. Electrical Parameters Input Input Range Input Surge Efficiency 36-75 VDC 100V / 100ms 3.3V/2.5V @ 87% (Typ at 60W) 3.3V/1.8V @ 86% 2.5V/1.5V @ 83% Control Enable TTL compatible (Positive and Negative Enable Options) Output Special Features * * * * * * * * * Tightly regulated for a dual output at < 1% Low Ripple and Noise at < 30mVPK-PK Industry Standard 1/4 Brick Footprint Positive and Negative Enable Options Regulation to Zero Load High Capacitive Load Start-up Fixed Switching Frequency at 350kHz Output Trim Input Under-Voltage Lockout Load Current Regulation Ripple and Noise Output Voltage Adjust Range Transient Response Over Current Protection 15A max per channel (60W max) < 1% VO 30mVPK-PK max 10% V 2% VO deviation (Typ) 50% to 75% Load Change < 300 sec settling time (Typ) 135% IO,max Environmental Specifications Safety * * * UL + cUL 60950, Recognized (Pending) EN60950 through TUV-PS (Pending) -40C to 85C Operating Temperature -40C to 125C Storage Temperature MTBF > 1 million hours MODEL: ALQ15 SERIES OCTOBER 4, 2002 - REVISION A1 SHEET 1 OF 18 Technical Reference Notes ALQ15XX48X Series (Open Frame Dual Output Quarter Brick) ALQ15 Series THIS SPECIFICATION COVERS THE REQUIREMENTS FOR A NEW 1/4-BRICK SIZE 15A/CHANNEL DUAL OUTPUT HIGH EFFICIENCY DC/DC CONVERTER. MODEL NAME ALQ15FG48 ALQ15FY48 ALQ15GM48 ALQ15AF48 CONSTRUCTION Open Frame Open Frame Open Frame Open Frame OPTIONS: Negative Enable: Positive Enable: 3.7mm (nom) Pin Length: MODEL: ALQ15 SERIES OCTOBER 4, 2002 - REVISION A1 VOUT / IOUT 3.3V-15A / 2.5V-15A 3.3V-15A / 1.8V-15A 2.5V-15A / 1.5V-15A 5.0V-12A / 3.3V-15A SUFFIX "N" No suffix "-6" SHEET 2 OF 18 Technical Reference Notes ALQ15XX48X Series (Open Frame Dual Output Quarter Brick) Electrical Specifications STANDARD TEST CONDITION on a single module unless otherwise specified. TA: +VIN: ENABLE: -VIN: +VOUT2: -VOUT: TRIM: +VOUT1: PIN 1 PIN 2 PIN 3 PIN 4 PIN 5 PIN 6 PIN 7 25C (Ambient Air) 48V 2V Open (Positive Enable) Return Pin for +VIN Connect to Load 2 Return Pin for Load 1 & 2 Open Connect to Load 1 ABSOLUTE MAXIMUM RATINGS Stresses in excess of the absolute maximum ratings can cause permanent damage to the converter. Functional operation of the device is converter is not implied at these or any other conditions in excess of those given in the operational section of the specs. Exposure to absolute maximum ratings for extended period can adversely affect device reliability. Parameter Input Voltage: Continuous Transient(100ms) : Device Symbol Min Typ Max Unit All All VIN VI N, trans 0 0 - 75 100 Vdc Vdc Operating Ambient Temperature1 All TA -40 - +85 C Storage Temperature All TSTG -55 - 125 C Operating Humidity All - - - 85 % I/O Isolation All - 1500 - - Vdc Maximum Enable Voltage All TBD Vdc NOTE: 1. Power must be derated at 85oC (refer to Figures 15 to 17). MODEL: ALQ15 SERIES OCTOBER 4, 2002 - REVISION A1 SHEET 3 OF 18 Technical Reference Notes ALQ15XX48X Series (Open Frame Dual Output Quarter Brick) Electrical Specifications (continued) INPUT SPECIFICATION Parameter Device Symbol Min Typ Max Unit All VIN 36 48 75 VDC Maximum Input Current Conditions: VIN = between 0 to VIN,min IO = IO,max; TA = 25 C All IIN,max - - 2.25 A Input Reflected Ripple Current3 Conditions: PO = PO,max; TA = 25 C All II1/ II2 - 10 25 mAPK-PK Standing Loss Condition: VIN = VIN,nom; TA = 25 C All - - - 3.5 W Operating Input Voltage 2 NOTE: 2. This power module is not internally fused. An input line fuse (e.g. Little fuse 3AB /322003 or 314003) is recommended. 3. See Figure 1 for Input Reflected Ripple Current Test Setup. OUTPUT SPECIFICATIONS Parameter Device Symbol Min Voltage Setpoint Conditions: VI = VIN,nom; TA = 25 C; VO1: IO1 = IO,max; PO = 60W VO2: IO2 = IO,max; PO = 60W FG FY GM AF VO1/ V O2 VO1/ V O2 VO1/ V O2 VO1/ V O2 3.25 / 2.46 3.25 / 1.76 2.46 / 1.47 4.93 / 3.25 Load Current 3.3V 2.5V 1.8V 1.5V 5.0V IO1/IO2 IO1/IO2 IO1/IO2 IO1/IO2 IO1/IO2 0 0 0 0 0 Combined Output Power PO = PO1 + PO2 FG FY GM AF PO PO PO PO Line Regulation: Conditions: VIN = VIN,min to VIN,max; IO1 = IO,max, IO2 = IO,min VI = VIN,min to VIN,max; IO1 = IO,min, IO2 = IO,max MODEL: ALQ15 SERIES OCTOBER 4, 2002 - REVISION A1 All Typ Max Unit 3.35 / 2.54 3.35 / 1.84 2.54 / 1.53 5.08 / 3.35 Vdc Vdc Vdc Vdc - 15.0 15.0 15.0 15.0 12.0 A A A A A - - 60 60 60 60 W W W W - - 0.1 %Vo 3.30 / 3.30 / 2.50 / 5.00 / 2.50 1.80 1.50 3.30 SHEET 4 OF 18 Technical Reference Notes ALQ15XX48X Series (Open Frame Dual Output Quarter Brick) Electrical Specifications (continued) OUTPUT SPECIFICATIONS Parameter Regulation Load4 Conditions: IO = 1A to IO,max; VIN =VIN,nom Temperature Conditions: TA = -40 C to +65 C; VIN = VIN,nom; IO = IO,max Output Ripple and Noise: Peak-to-Peak5 Conditions: IO = IO,max; VIN =VIN,nom; BW = 20 MHz; TA =25 oC External Load Capacitance6 Over Current Limit Inception Conditions: Vo = 90% VO,nom; IO2 = IO,min; VIN = VIN,nom Characteristics: Hiccup mode, auto-recovery Device Symbol Min Typ Max Unit All - - 1.0 %Vo All - - 2 %Vo 3.3 2.5 1.8 1.5 5.0 - - 30 30 30 30 30 mVPK-PK mVPK-PK mVPK-PK mVPK-PK mVPK-PK All - - 10000 F All 5.0V IO,OCP IO,OCP 16.5 13.2 - 25 20 A A Output Short Circuit Conditions: VIN = VIN,nom; IO2 = 0A TA = 25 C All IOPK IORMS IODC IINS - - 28 5 1 150 APK ARMS A mA Efficiency Conditions: VIN = VIN,nom; TA = 25 C PO = PO,max, balanced current loading FG FY GM AF 85.0 84.0 81.0 87.5 87.0 86.0 83.0 88.5 Switching Frequency Note: Can be determined from output ripple waveform All - 225 250 % % % % 275 KHz NOTE: 4. Channel under test shall follow the specified conditions while the other channel is set to min load, 0A. 5. Channel under test shall be set to full load with the other channel set to IO, min - See Fig 2. 6. Refer to YSC plots on Fig 18 and 19 to determine loop stability at various output load impedance. MODEL: ALQ15 SERIES OCTOBER 4, 2002 - REVISION A1 SHEET 5 OF 18 Technical Reference Notes ALQ15XX48X Series (Open Frame Dual Output Quarter Brick) Electrical Specifications (continued) OUTPUT SPECIFICATIONS Parameter Device Symbol Min Typ Max Unit Peak Voltage Deviation Load Change: IO = 50% to 75% IO,max Transient Settling Time Note: VO,nom (ref.) (from ref. to 0.1VPK) All - - 2 4 %Vo All - - - 500 sec Peak Voltage Deviation Load Change: IO = 50% to 25% IO,max Transient Settling Time Note: VO,nom (ref.) (from ref. to 0.1VPK) All - - 2 4 %VO All - - - 500 sec Turn-On Time Conditions: VIN = VIN,min; IO1 = IO,max, IO2 = IO,min; TA = 25C Note: VO1 within 1% All - - 6 32 msec Output Voltage Overshoot Conditions: VIN = VIN,nom; TA = 25C; PO = 0W All - - - 4 %VO 7 Dynamic Response Conditions: IO/t = 1A/10s ; VIN = VIN,nom ; TA = 25C NOTE: 7. Dynamic response tested with 10uF-aluminum and 1uF-tantalum capacitors across the load. FEATURE SPECIFICATION Parameter Undervoltage Lockout Turn-on Point Turn-off Point Output Voltage Adjustment Range Conditions: VIN = VIN,nom; TA = 25C VO1: IO1 = IO,max, IO2 = IO,min VO2: IO1 = IO,min; IO2 = IO,max Note: Tolerance = 1% MODEL: ALQ15 SERIES OCTOBER 4, 2002 - REVISION A1 Device Symbol Min Typ Max Unit All All - 32 34.5 33.5 36.0 - V V All - 90 - 110 %VO SHEET 6 OF 18 Technical Reference Notes ALQ15XX48X Series (Open Frame Dual Output Quarter Brick) Electrical Specifications (continued) FEATURE SPECIFICATION Parameter Symbol Min Typ Max Unit VENABLE VENABLE 0 1.8 - 2.5 5.0 V V VENABLE VENABLE 0 1.8 - 2.5 5.0 V V All All IENABLE IENABLE - - 1.0 50 mA A NSuffix w/o NSuffix VO - - 1.2 V VO - - 1.2 V Output Over Voltage Clamp Conditions: VIN = VIN,nom; TA = 25C Characteristics: Latching mode; auto-tracking wrt Vout trim 3.3V 2.5V 1.8V 1.5V 5.0V VO,CLAMP VO,CLAMP VO,CLAMP VO,CLAMP VO,CLAMP 3.8 2.8 2.0 1.7 5.7 3.9 2.9 2.1 1.8 6.0 4.5 3.5 2.5 2.2 6.3 V V V V V Over-Temperature Shutdown Note: 1. Tcomp(max) < 140 C 2. Measured in the vicinity of pin 3 and R29 All TB 110 115 120 C Device Symbol Min Typ Max Unit Isolation Capacitance All - - 680 - pF Isolation Resistance All - 10 - - M Enable Pin Voltage POSITIVE LOGIC Logic Low: Module OFF Logic High: Module ON NEGATIVE LOGIC Logic Low: Module ON Logic High: Module OFF Enable Pin Current Logic Low Logic High: (ILKG at VENABLE = 5V) Module Output Voltage at Logic High (Negative Enable) at Logic Low (Positive Enable) Device w/o NSuffix NSuffix ISOLATION SPECIFICATION Parameter MODEL: ALQ15 SERIES OCTOBER 4, 2002 - REVISION A1 SHEET 7 OF 18 Technical Reference Notes ALQ15XX48X Series (Open Frame Dual Output Quarter Brick) SAFETY APPROVAL The ALQ15 series have been certified through: * UL + cUL 60950, Third Edition - Recognized (PENDING) * EN 60950 through TUV-PS (PENDING) * Basic Insulation TO OSCILLOSCOPE Vi(+) Ltest 12 uH Cs 220 uF ESR < 0.1 OHM @ 20 C, 100 kHz BATTERY 33 uF ESR < 0.7 OHM @ 20 C, 100 kHz Vi(-) Note: Measure the input reflected ripple current with a simulated source inductance (Ltest) of 12uH. Capacitor Cs offsets possible battery/ source impedance. Measure current as shown above. Figure 1. Input Reflected Ripple Current Measurement Setup. COPPER STRIP Vo(+) 1 uF 10 uF SCOPE RESISTIVE LOAD Vo(-) Note: Use a 1F 50V X7R ceramic capacitor and a 10F 25V tantalum cap. Scope measurement should be made using a BNC probe socket positioned about 76mm (3 in.) away from the module's output terminals. The ext. capacitors should be placed between the BNC socket and the module's output terminals, with a minimum distance of 51mm (2in.) from the latter. Figure 2. Peak to Peak Output Noise Measurement Setup. MODEL: ALQ15 SERIES OCTOBER 4, 2002 - REVISION A1 SHEET 8 OF 18 Technical Reference Notes ALQ15XX48X Series (Open Frame Dual Output Quarter Brick) Basic Operation and Features INPUT UNDER VOLTAGE LOCKOUT To prevent any instability to the converter that may affect and consequently damage the end system, the ALQ15 series have been designed to turn-on once VIN is in the voltage range of 34.5-36 VDC. Likewise, it has also been programmed to turn-off when VIN drops down to 32-33.5 VDC. OUTPUT VOLTAGE ADJUST/TRIM The converter comes with a TRIM pin (PIN 6) which is used to adjust both outputs simultaneously by as much as 90% to 110% of its set point. This is achieved by connecting an external resistor as described below. To INCREASE the output voltages, external RTRIM-UP resistor should be connected between TRIM PIN (Pin6) and RTN PIN (Pin 5). Please refer to Figure 3 for the resistor configuration and Table 1 for the required resistor value in attaining the desired output adjustment To DECREASE the output voltages, external RTRIM-DOWN resistor should be connected between TRIM PIN (Pin 6) and VOUT1 (Pin 7). Please refer to Figure 4 for the resistor configuration and Table 1 for the required resistor value in attaining the desired output adjustment. Figure 3. External Trim resistor setup to increase output. Figure 4. External Trim resistor setup to decrease output. TABLE 1. External trim resistor values to adjust the output voltages (in k ) ALQ15FG48 (3.3V / 2.5V) ALQ15FY48 (3.3V / 1.8V) TRIM UP TRIM DOWN TRIM UP TRIM DOWN [%] RTRIM-UP RTRIM-DOWM RTRIM-UP RTRIM-DOWM 1 46.84 49.64 55.34 67.64 2 20.82 23.11 24.59 30.06 3 12.14 13.69 14.35 17.54 4 7.81 8.88 9.22 11.27 5 5.21 5.95 6.15 7.52 6 3.47 3.98 4.10 5.01 7 2.23 2.56 2.64 3.22 8 1.30 1.49 1.54 1.88 9 0.58 0.67 0.68 0.84 10 0.00 0.00 0.00 0.00 MODEL: ALQ15 SERIES OCTOBER 4, 2002 - REVISION A1 ALQ15GM48 (2.5V / 1.5V) TRIM UP TRIM DOWN RTRIM-UP RTRIM-DOWM 58.48 58.57 24.64 27.26 14.13 16.16 9.00 10.47 5.97 7.02 3.97 4.69 2.55 3.02 1.48 1.77 0.66 0.79 0.00 0.00 SHEET 9 OF 18 Technical Reference Notes ALQ15XX48X Series (Open Frame Dual Output Quarter Brick) Basic Operation and Features (continued) OUTPUT ENABLE The ALQ15 comes with an Enable pin (PIN 2) which is primarily used to turn ON/OFF the converter. Both a Positive (no part number suffix required) and a Negative (suffix "N" required) Enable Logic option is being offered. Please refer to Table 2 for the Part Numbering Scheme. For Positive Enable, the converter is turned on when the Enable pin is at logic HIGH or left open. The unit turns off when the Enable pin is at logic LOW. On the other hand, the Negative Enable version turns on when the Enable pin is at logic LOW or directly connected to -VIN. The unit turns off when the Enable pin is at Logic HIGH. OUTPUT OVER VOLTAGE PROTECTION (OVP) The Over Voltage Protection circuit will shut down the entire converter if any of the two output voltages exceeds the OVP threshold limits. It will remain latched (shut down) until the OVP fault condition is removed and the input voltage is recycled. OVER CURRENT PROTECTION (OCP) The Over Current Protection circuit will shutdown the converter if any of the load current of either output reaches the OCP threshold limits. The unit will automatically recover once the over current condition is removed. See Figure 12 for typical output characteristic under an over current condition. OVER TEMPERATURE PROTECTION (OTP) The Over Temperature Protection circuit will shutdown the converter once the sensed location reaches the OTP range. This feature prevents the unit from overheating and consequently going into thermal runaway which may further damage the converter and the end system. Such overheating may be an effect of operation outside the given power thermal derating conditions. Restart is possible once the temperature of the sensed location drops to less than 110C. MODEL: ALQ15 SERIES OCTOBER 4, 2002 - REVISION A1 SHEET 10 OF 18 Technical Reference Notes ALQ15XX48X Series (Open Frame Dual Output Quarter Brick) Performance Curves 3.3V / 2.5V (FG SERIES) 3V3/2V5 Efficiency (P O1 = PO2) 3V3/2V5 Efficiency (IO1 = IO2) ) 90 90 85 Efficiency [%] Efficiency [%] 85 80 75 70 36 48 75 65 80 75 Vin = 36V 70 Vin = 48V 65 Vin = 75V 60 60 5 10 15 20 25 30 35 40 45 50 55 60 1 Output Power(Balanced Load) Figure 5. Efficiency for balanced Output Power (PO1 = PO2) at various input voltages (PO1 + PO2 = 60W). Taken w/ module mounted vertically w/ 300LFM airflow from Pin 3 to 1 at TA = 25C. 3 4 5 6 7 8 9 10 Figure 6. Efficiency vs. Balanced Output Current (IO1 = IO2) at various input voltages (Total Power = 60W). Load Regulation vs. Ambient Temp 48VIN Efficiency vs. Balanced Load Current 1 90 Regulation (%) 85 Efficiency [%] 2 Output Current On Each Channel [Adc] 80 75 70 -40 C 25 C 55 C 65 0.9 3.3V Load Regulation 0.8 2.5V Load Regulation 0.7 0.6 0.5 0.4 0.3 0.2 0.1 60 0 0 2 4 6 8 Output Current [A] Figure 7. Efficiency at VIN = 48V vs. Balanced Load Current (IO1 = IO2) at various ambient temperatures and with 100LFM airflow (Total Power = 60W) MODEL: ALQ15 SERIES OCTOBER 4, 2002 - REVISION A1 10 -40 25 55 Ambient Temperature [ C] Figure 8. Load Regulation vs. Ambient Temperature at VIN = 48V. SHEET 11 OF 18 Technical Reference Notes ALQ15XX48X Series (Open Frame Dual Output Quarter Brick) Performance Curves (continued) 3.3V / 2.5V (FG SERIES) Line Regulation vs. Ambient Temp Line Regulation [%] 0.050 0.040 0.030 0.020 0.010 3.3V Line Regulation 2.5V Line Regulation 0.000 -40 25 55 Ambient Temperature [C] Figure 10. Start-up characteristic of Vo1 (CH1) and Vo2 (CH2) at balanced load current; VIN = 48V. Figure 9. Line Regulation vs. Ambient Temperature. Over Current Trip Point Output Current [Adc] 25 20 15 10 2.5V 5 3.3V 0 36 40 44 48 52 56 60 64 68 72 76 Input Voltage [Vdc] Figure 11. Over Current trip point vs. Input Voltage at 25C ambient temperature with 100LFM airflow. MODEL: ALQ15 SERIES OCTOBER 4, 2002 - REVISION A1 Figure 12. Typical output current waveform under an Over Current Condition. Output current scale at 0.5A/ mV. SHEET 12 OF 18 Technical Reference Notes ALQ15XX48X Series (Open Frame Dual Output Quarter Brick) Performance Curves (continued) 3.3V / 2.5V (FG SERIES) Additional curves to be provided on next release. 3V3/1V8 Efficiency (P O1 = PO2) 90 Efficiency [%] 85 80 75 70 36 48 75 65 60 5 10 15 20 25 30 35 40 45 50 55 60 Output Power (Balanced Load) Figure 13. Efficiency for balanced Output Power (PO1 = PO2) at various input voltages (PO1 + PO2 = 60W). Taken w/ module mounted vertically w/ 300LFM airflow from Pin 3 to 1 at TA = 25C. 2.5V/1V5 (GM SERIES) Additional curves to be provided on next release. 2V5/1V5 Efficiency (P O1 = PO2) 90 Efficiency [%] 85 80 75 70 36 48 75 65 60 5 10 15 20 25 30 35 40 45 50 55 60 Output Power(Balanced Load) Figure 14. Efficiency for balanced Output Power (PO1 = PO2) at various input voltages (PO1 + PO2 = 60W). Taken w/ module mounted vertically w/ 300LFM airflow from Pin 3 to 1 at TA = 25C. MODEL: ALQ15 SERIES OCTOBER 4, 2002 - REVISION A1 SHEET 13 OF 18 Technical Reference Notes ALQ15XX48X Series (Open Frame Dual Output Quarter Brick) Performance Curves (continued) CURRENT VS. TEMPERATURE CURVES Output Power VS. Ambient Temperature (3V3/2V5) Figure 15. Combined Output Power (balanced load: IO1 = IO2) vs. Ambient Temperature Curves for ALQ15FG48 version taken at various airflow conditions (converter mounted vertically with airflow direction from PIN? to PIN?; VIN = 48V nominal). Output Power [W] 65 55 45 0 LFM 100 LFM 200 LFM 300 LFM 400 LFM 500 LFM 35 25 15 5 25 35 45 55 65 75 85 Ambient Temperature [C] Output Power VS. Ambient Temperature (3V3/1V8) Figure 16. Combined Output Power (balanced load: IO1 = IO2) vs. Ambient Temperature Curves for ALQ15FY48 version taken at various airflow conditions (converter mounted vertically with airflow direction from PIN? to PIN?; VIN = 48V nominal). Output Power [W] 65 55 45 0 LFM 100 LFM 200 LFM 300 LFM 400 LFM 500 LFM 35 25 15 5 25 35 45 55 65 75 85 Ambient Temperature [C] Output Power VS. Ambient Temperature (2V5/1V5) Figure 17. Combined Output Power (balanced load: IO1 = IO2) vs. Ambient Temperature Curves for ALQ15FY48 version taken at various airflow conditions (converter mounted vertically with airflow direction from PIN? to PIN?; VIN = 48V nominal). Output Power [W] 65 55 45 0 LFM 100 LFM 200 LFM 300 LFM 400 LFM 500 LFM 35 25 15 5 25 35 45 55 65 75 85 Ambient Temperature [C] MODEL: ALQ15 SERIES OCTOBER 4, 2002 - REVISION A1 SHEET 14 OF 18 Technical Reference Notes ALQ15XX48X Series (Open Frame Dual Output Quarter Brick) Young's Stability Curves ALQ15 3.3 volt channel ALQ15 2v5 volt channel 1 Impedance magnitude ohms Impedance magnitude ohms 1 0.1 0.01 1 .10 3 100 1 .10 3 1 .10 4 1 .10 0.1 0.01 1 .10 3 1 .10 4 5 100 Phase deg Phase angle deg 3 4 1 .10 5 _______15 _______30 _______45 _______60 _______75 _______90 100 100 0 0 100 100 100 1 .10 1 .10 frequency Hz 1 .10 1 .10 frequency Hz 3 4 1 .10 5 100 1 .10 1 .10 frequency Hz 3 4 1 .10 5 Figure 18. YSC Plots of 3V3 and 2V5 Output Channels. MODEL: ALQ15 SERIES OCTOBER 4, 2002 - REVISION A1 SHEET 15 OF 18 Technical Reference Notes ALQ15XX48X Series (Open Frame Dual Output Quarter Brick) Young's Stability Curves (continued) ALQ15 1v5 volt channel ALQ15 1v8 volt channel 1 Impedance magnitude ohms Impedance magnitude ohms 1 0.1 0.01 1 .10 0.01 1 .10 3 100 1 .10 1 .10 frequency Hz 3 4 1 .10 100 1 .10 1 .10 frequency Hz 3 4 1 .10 5 1 .10 5 _______15 _______30 _______45 _______60 _______75 _______90 100 Phase deg 0 0 100 100 100 3 5 100 Pahse deg 0.1 1 .10 1 .10 frequency Hz 3 4 1 .10 5 100 1 .10 1 .10 frequency Hz 3 4 Figure 19. YSC Plots of 1V8 and 1V5 Output Channels. MODEL: ALQ15 SERIES OCTOBER 4, 2002 - REVISION A1 SHEET 16 OF 18 Technical Reference Notes ALQ15XX48X Series (Open Frame Dual Output Quarter Brick) Mechanical Specifications Parameter Dimension Device All Symbol L W Min - Typ 2.30 [58.42] 1.48 [37.59] Max - Unit in [ mm ] in [ mm ] H - 0.544 [13.82] - in [ mm ] TBD g [oz] Weight - PIN ASSIGNMENT 1 2 3 4 +VIN ENABLE -VIN +VOUT2 5 6 7 RTN TRIM +VOUT1 NOTE: Pin diameters at = 0.04" [ 1.02 mm] nominal. Figure 20. ALQ15 series mechanical outline ( inches [(mm ]). MODEL: ALQ15 SERIES OCTOBER 4, 2002 - REVISION A1 SHEET 17 OF 18 Technical Reference Notes ALQ15XX48X Series (Open Frame Dual Output Quarter Brick) Mechanical Specifications (continued) SOLDERING CONSIDERATIONS The ALQ15 series converters are compatible with standard wave soldering techniques. When wave soldering, the converter pins should be preheated for 20-30 seconds at 110C and wave soldered at 260C for less than 10 seconds. When hand soldering, the iron temperature should be maintained at 425C and applied to the converter pins for less than 5 seconds. Longer exposure can cause internal damage to the converter. Cleaning can be performed with cleaning solvent IPA or with water. PART NUMBERING SCHEME FOR ORDERING ALQ15 OUTPUT VOLTAGE 1 OUTPUT VOLTAGE 2 w x F = 3.3V G = 2.5V F = 3.3V Y = 1.8V G = 2.5V M = 1.5V A = 5.0V F = 3.3V TABLE 2. Part Numbering information. 48 ENABLE LOGIC PIN LENGTH OPTION y z "Blank" = Positive "N" = Negative "Blank" = 5mm (Standard) "-6" = 3.7mm Please call 1-888-41-ASTEC for further inquiries or visit us at www.astecpower.com MODEL: ALQ15 SERIES OCTOBER 4, 2002 - REVISION A1 SHEET 18 OF 18