Technical Reference Notes ALQ15XX48X Series (Open Frame Dual Output Quarter Brick) ALQ15 Dual Output Open-Frame DC-DC Converter Module Industry Standard ¼ 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 ¼ brick open-frame package. With its independently controlled output rails, the module effectively minimizes cross regulation, 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 @ 87.5% (60W output power). Output combinations currently available are 5.0V/3.3V - 3.3V/2.5V - 3.3V/1.8V 2.5V/1.5V, with each output rail able to deliver 15A max (5V@12A). 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 5.0V/3.3V @ 89.5% (Typ at 60W) 3.3V/2.5V @ 87.7% 3.3V/1.8V @ 86.5% 2.5V/1.5V @ 84.0% Control Enable TTL compatible (Positive and Negative Enable Options) Output Special Features • • • • • • • • • • Tight Regulation Low Ripple and Noise at < 30mVPK-PK Industry Standard ¼ Brick Footprint Positive and Negative Enable Options Regulation to Zero Load High Capacitive Load Start-up Fixed Switching Frequency Output Trim Input Under-Voltage Lockout Basic Insulation Load Current 15A max per channel (60W max) 5V @ 12A max Line/Load Regulation < 1% VO (Typ) Ripple and Noise 30mVPK-PK Output Voltage Adjust Range ±10% Vo Transient Response 3% VO deviation max (3.3V) 50% to 75% Load Change 220 µsec typical settling time (for 3.3V) Over Current Protection 130% IO,max typical Environmental Specifications Safety • • • UL + cUL 60950, Recognized EN60950 through TUV-PS CB Report -40ºC to 85ºC Operating Temperature -55ºC to 125ºC Storage Temperature Designed for > 1 million hours MTBF MODEL: ALQ15 SERIES MARCH 4, 2004 - REVISION 01 SHEET 1 OF 19 Technical Reference Notes ALQ15XX48X Series (Open Frame Dual Output Quarter Brick) ALQ15 SERIES MODEL NAME ALQ15AF48 ALQ15FG48 ALQ15FG48N-6D* ALQ15FY48 ALQ15GM48 CONSTRUCTION Open Frame Open Frame Open Frame Open Frame Open Frame OPTIONS: Negative Enable: Positive Enable: 3.7mm (nominal) Pin Length: VOUT / IOUT 5.0V-12A / 3.3V-15A 3.3V-15A / 2.5V-15A 3.3V-15A / 2.5V-15A 3.3V-15A / 1.8V-15A 2.5V-15A / 1.5V-15A SUFFIX "N" No suffix "-6" * Check Part Numbering Scheme on Table 2 and the corresponding external trim function on Table 1-D MODEL: ALQ15 SERIES MARCH 4, 2004 - REVISION 01 SHEET 2 OF 19 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: Airflow 25ºC (Ambient Air) PIN 1 48V ± 2V PIN 2 Open (Positive Enable) PIN 3 Return Pin for +VIN PIN 4 Connect to Load 2 PIN 5 Return Pin for Load 1 & 2 PIN 6 Open PIN 7 Connect to Load 1 Refer to the appropriate derating curve 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 ºC Storage Temperature All TSTG -55 - 125 ºC Operating Humidity All - - - 85 % I/O Isolation All - 1500 - - Vdc Maximum Enable Voltage All 25 Vdc NOTE: 1. Power Derating applies. Refer to Figures 15 to 18. MODEL: ALQ15 SERIES MARCH 4, 2004 - REVISION 01 SHEET 3 OF 19 Technical Reference Notes ALQ15XX48X Series (Open Frame Dual Output Quarter Brick) Electrical Specifications (continued) INPUT SPECIFICATION Parameter Device Symbol Min Typ Max Unit Operating Input Voltage All VIN 36 48 75 VDC Maximum Input Current2 Conditions: VIN = between 0 to VIN,min PO = PO,max; TA = 25 ºC AF FG FY GM IIN,max - - 2.20 2.20 2.20 2.27 A Input Reflected Ripple Current3 Conditions: PO = PO,max; TA = 25 ºC All II1/ II2 - 10 20 mAPK-PK Standing Loss Condition: VIN = VIN,nom; TA = 25 ºC All - - - 3.0 W NOTE: 2. The power module is not internally fused. An input line fuse (e.g. Littelfuse Type 312003. 3A, 250V) is recommended. 3. See Figure 1 for Input Reflected Ripple Current Test Setup. OUTPUT SPECIFICATIONS Parameter Device Symbol Min Typ Max Unit Voltage Setpoint Conditions: VI = VIN,nom; TA = 25 ºC; VO1: IO1 = IO,max; PO = 60W VO2: IO2 = IO,max; PO = 60W AF FG FY GM VO1/ V O2 VO1/ V O2 VO1/ V O2 VO1/ V O2 4.93 / 3.25 3.25 / 2.46 3.25 / 1.76 2.46 / 1.47 5.00 / 3.30 3.30 / 2.50 3.30 / 1.80 2.50 / 1.50 5.08 / 3.35 3.35 / 2.54 3.35 / 1.84 2.54 / 1.53 Vdc Load Current 5.0V 3.3V 2.5V 1.8V 1.5V IO1/IO2 IO1/IO2 IO1/IO2 IO1/IO2 IO1/IO2 0 0 0 0 0 - 12.0 15.0 15.0 15.0 15.0 A Combined Output Power PO = PO1 + PO2 AF FG FY GM PO PO PO PO - - 60 60 60 60 W Line Regulation: Conditions: VIN = VIN, min to VIN, max; IO1 = IO, max, IO2 = IO, min VIN = VIN, min to VIN, max; IO1 = IO, min, IO2 = IO, max 5.0V 3.3V 2.5V 1.8V 1.5V - 0.06 0.03 0.03 0.03 0.03 0.15 0.10 0.10 0.10 0.10 %Vo MODEL: ALQ15 SERIES MARCH 4, 2004 - REVISION 01 SHEET 4 OF 19 Technical Reference Notes ALQ15XX48X Series (Open Frame Dual Output Quarter Brick) Electrical Specifications (continued) OUTPUT SPECIFICATIONS Parameter Device Min Typ Max Unit 5.0V 3.3V 2.5V 1.8V 1.5V All - 0.06 0.12 0.20 0.26 0.33 - 0.40 0.60 0.70 0.90 1.00 0.20 %Vo Temperature Conditions: TA = -40 ºC to +65 ºC; VIN = VIN,nom; IO = IO,max All - - 1.50 %Vo Output Ripple and Noise: Peak-to-Peak5 Conditions: IO = IO,max; VIN =VIN,nom; BW = 20 MHz; TA =25 oC 5.0 3.3 2.5 1.8 1.5 - 12 12 12 18 18 25 25 25 30 30 mVPK-PK External Load Capacitance6 All - - 10000 µF 4 Load Regulation Conditions: IO = 1A to IO,max; VIN =VIN,nom Cross Regulation4 Conditions: VIN = VIN,nom, IO = IO,max Over Current Limit Inception Conditions: Vo = 90% VO,nom; IO2 = IO,min; VIN = VIN,nom Characteristics: Hiccup mode, auto-recovery Symbol %Vo All 5.0V IO,OCP IO,OCP 16.5 13.2 - 25 22 A Output Short Circuit Conditions: VIN = VIN,nom; IO2 = 0A TA = 25 ºC All IOPK IORMS IODC IINS - - 28 5 1 150 APK ARMS A mA Efficiency Conditions: VIN = VIN,nom; TA = 25 ºC PO = PO,max, balanced current loading AF FG FY GM η η η η 89.0 87.0 86.0 83.0 89.5 87.7 86.5 84.0 90.5 88.5 87.5 85.0 % Switching Frequency Note: Can be determined from output ripple waveform All - - 300 375 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 for the recommended output ripple and noise test setup. 6. Refer to YSC plots on Fig 19 and 20 to determine loop stability at various output load impedance. MODEL: ALQ15 SERIES MARCH 4, 2004 - REVISION 01 SHEET 5 OF 19 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% or 75% to 50% IO,max 5.0V 3.3V 2.5V 1.8V 1.5V - - 0.8 1.3 1.6 2.3 2.8 2.0 3.0 3.0 5.0 5.0 %Vo Transient Settling Time Note: VO,nom (ref.) (from ref. to 0.1∆VPK) 5.0V 3.3V 2.5V 1.8V 1.5V - - 360 220 210 145 136 500 500 500 300 300 µsec Turn-On Time Conditions: VIN = VIN,min; IO1 = IO,max, IO2 = IO,min; TA = 25°C Note: VO1 within 1% AF FG FY GM - - 21 16 16 14 30 30 30 30 msec Output Voltage Overshoot Conditions: VIN = VIN,nom; TA = 25°C; PO = 0W 5.0V 3.3V 2.5V 1.8V 1.5V - - 0 0 1 2 3 1 1 2 4 4 %VO 7 Dynamic Response Conditions: ∆IO/∆t = 0.15A/µs ; VIN = VIN,nom ; TA = 25°C 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 = 25°C VO1: IO1 = IO,max, IO2 = IO,min VO2: IO1 = IO,min; IO2 = IO,max Note: Tolerance = ± 1% MODEL: ALQ15 SERIES MARCH 4, 2004 - REVISION 01 Device Symbol Min Typ Max Unit All All - 32 35.0 34.0 36.0 - V V All - 90 - 110 %VO SHEET 6 OF 19 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 1.5 - 2.2 5.0 V V VENABLE VENABLE 0 1.5 - 2.2 5.0 V V All All IENABLE IENABLE - - 1.0 50 mA µA NSuffix w/o NSuffix VO - - 1.2 V VO - - 1.2 V Output Over Voltage Clamp Conditions: VIN = VIN,nom; TA = 25°C Characteristics: Hiccup mode; auto-tracking wrt Vout trim 5.0V 3.3V 2.5V 1.8V 1.5V VO,CLAMP VO,CLAMP VO,CLAMP VO,CLAMP VO,CLAMP 5.7 3.8 2.8 2.0 1.7 6.0 3.9 3.0 2.2 1.8 6.5 4.3 3.4 2.4 2.1 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 - - MΩ 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 MARCH 4, 2004 - REVISION 01 SHEET 7 OF 19 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 • EN 60950 through TUV-PS • CB Report • Basic Insulation TO OSCILLOSCOPE Vi(+) Ltest 12 uH Cs 220 uF ESR < 0.1 OHM @ 20 ºC, 100 kHz BATTERY 33 uF ESR < 0.7 OHM @ 20 ºC, 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 1µF 50V X7R ceramic capacitor and a 10µF 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 MARCH 4, 2004 - REVISION 01 SHEET 8 OF 19 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 35-36 VDC. Likewise, it has also been programmed to turn-off when VIN drops down to 32-34 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 values 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). This trim configuration is true for the AF, FG, FY and GM standard versions. Please refer to Figure 4 for the resistor configuration and Table 1 for the required resistor values in attaining the desired output adjustment. For ALQ15FG48N-6D, RTRIM-DN resistor is connected between the TRIM PIN and VOUT2 (2.5V output pin). Figure 3. External Trim resistor setup to increase output for all versions. TABLE 1-A ALQ15AF48 (5V / 3.3V) ? [%} RTRIM-UP [kO] +1 32.45 +2 13.66 +3 7.83 +4 4.99 +5 3.31 +6 2.20 +7 1.41 +8 0.82 +9 0.36 +10 0.00 ? [%} -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 MODEL: ALQ15 SERIES MARCH 4, 2004 - REVISION 01 RTRIM-DOWN [kO] 32.39 15.09 8.95 5.80 3.89 2.60 1.67 0.98 0.44 0.00 Figure 4. External Trim resistor setup to decrease output for AF; FG; FY and GM standard versions only. TABLE 1-B ALQ15FG48 / ALQ15FY48 ? [%} RTRIM-UP [kO] ? [%} +1 12.42 -1 +2 5.26 -2 +3 3.02 -3 +4 1.93 -4 +5 1.28 -5 +6 0.85 -6 +7 0.55 -7 +8 0.32 -8 +9 0.14 -9 +10 0.00 -10 RTRIM-DOWN [kO] 12.58 5.86 3.47 2.25 1.51 1.01 0.65 0.38 0.17 0.00 SHEET 9 OF 19 Technical Reference Notes ALQ15XX48X Series (Open Frame Dual Output Quarter Brick) Basic Operation and Features (continued) TABLE 1-C ALQ15GM48 (2.5V / 1.5V) ? [%} RTRIM-UP [kO] ? [%} +1 70.46 -1 +2 29.65 -2 +3 17.00 -3 +4 10.83 -4 +5 7.18 -5 +6 4.77 -6 +7 3.06 -7 +8 1.78 -8 +9 0.79 -9 +10 0.00 -10 RTRIM-DOWN [kO] 70.31 32.75 19.42 12.58 8.43 5.64 3.63 2.12 0.94 0.00 TABLE 1-D ALQ15FG48N-6D* ? [%} RTRIM-UP [kO] +1 46.84 +2 20.82 +3 12.14 +4 7.81 +5 5.20 +6 3.47 +7 2.23 +8 1.30 +9 0.58 +10 0.00 ? [%} -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 RTRIM-DOWN [kO] 66.47 27.32 15.55 9.87 6.53 4.34 2.78 1.62 0.72 0.00 * DI/DT’s QD48T025033 Trim Equivalent ALQ15 standard trim utilizes approximately similar range of trim resistors for both RTRIM-UP and RTRIM-DOWN to adjust the outputs. This facilitates ease of resistor selection and contributes to a decreased number of parts for customer inventory if the TRIM pin is being utilized. 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 options are 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 or directly connected to -VIN. 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. The converter will automatically recover once the fault is removed. 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 110°C. MODEL: ALQ15 SERIES MARCH 4, 2004 - REVISION 01 SHEET 10 OF 19 Technical Reference Notes ALQ15XX48X Series (Open Frame Dual Output Quarter Brick) Performance Curves ALQ15FG48 3.3V/2.5V Efficiency @ Balanced Current 90 85 85 EFFICIENCY (%) EFFICIENCY (%) 3.3V/2.5V Efficiency @ PO1 = PO2 90 80 75 70 65 36Vin 60 48Vin 55 75Vin 80 75 70 36Vin 65 48Vin 60 50 75Vin 55 5 10 15 20 25 30 35 40 45 50 55 60 TOTAL OUTPUT POWER [W] Figure 5. Efficiency at balanced power (PO1 = PO2) for various input voltages; taken at TA=25ºC with the converter mounted vertically and with 200LFM airflow directed from Pin 3 to Pin 1. Figure 7. Start-up characteristic of Vo1 (CH1) and Vo2 (CH2) at balanced load current; VIN = 48V. MODEL: ALQ15 SERIES MARCH 4, 2004 - REVISION 01 0 2 4 6 8 LOAD CURRENT IO1 = IO2 [A] 10 Figure 6. Efficiency curve for balanced output current (IO1 = IO2) at various input voltages; taken at TA=25ºC with the converter mounted vertically and with 200LFM airflow directed from Pin 3 to Pin 1. Figure 8. Typical output current waveform under an Over Current Condition. Output current scale at 0.5A/ mV. SHEET 11 OF 19 Technical Reference Notes ALQ15XX48X Series (Open Frame Dual Output Quarter Brick) Performance Curves (continued) ALQ15AF48 (5.0V / 3.3V) SERIES 5V/3.3V Efficiency @ PO1 = PO2 5V/3.3V Efficiency @ Balanced Current 95 95 90 85 80 75 70 65 36Vin 60 48Vin 55 75Vin EFFICIENCY (%) EFFICIENCY (%) 90 85 80 75 36Vin 70 48Vin 65 50 75Vin 60 5 10 15 20 25 30 35 40 45 50 55 60 0 1 2 3 4 5 LOAD CURRENT IO1 = IO2 [A] TOTAL OUTPUT POWER [W] Figure 9. Efficiency at balanced power (PO1 = PO2) for various input voltages; taken at TA=25ºC with the converter mounted vertically and with 100LFM airflow directed from Pin 3 to Pin 1. 6 7 Figure 10. Efficiency curve for balanced output current (IO1 = IO2) at various input voltages; taken at TA=25ºC with the converter mounted vertically and with 100LFM airflow directed from Pin 3 to Pin 1. ALQ15FY48 (3.3V / 1.8V) SERIES 3.3V/1.8V Efficiency @ Balanced Current 3.3V/1.8V Efficiency @ PO1 = PO2 90 90 85 80 75 70 65 36Vin 60 48Vin 55 75Vin 50 5 10 15 20 25 30 35 40 45 50 55 60 TOTAL OUTPUT POWER [W] Figure 11. Efficiency at balanced power (PO1 = PO2) for various input voltages; taken at TA=25ºC with the converter mounted vertically and with 300LFM airflow directed from Pin 3 to Pin 1. MODEL: ALQ15 SERIES MARCH 4, 2004 - REVISION 01 EFFICIENCY (%) EFFICIENCY (%) 85 80 75 70 36Vin 65 48Vin 60 75Vin 55 0 2 4 6 8 10 LOAD CURRENT IO1 = IO2 [A] 12 Figure 12. Efficiency curve for balanced output current (IO1 = IO2) at various input voltages; taken at TA=25ºC with the converter mounted vertically and with 300LFM airflow directed from Pin 3 to Pin 1. SHEET 12 OF 19 Technical Reference Notes ALQ15XX48X Series (Open Frame Dual Output Quarter Brick) Performance Curves (continued) ALQ15GM48 (2.5V / 1.5V) SERIES 2.5V/1.5V Efficiency @ Balanced Current 90 90 85 85 80 75 70 65 36Vin 60 48Vin 55 75Vin 50 5 10 15 20 25 30 35 40 45 50 55 60 TOTAL POWER [W] Figure 13. Efficiency at balanced power (PO1 = PO2) for various input voltages; taken at TA=25ºC with the converter mounted vertically and with 400LFM airflow directed from Pin 3 to Pin 1. MODEL: ALQ15 SERIES MARCH 4, 2004 - REVISION 01 EFFICIENCY (%) EFFICIENCY (%) 2.5V/1.5V Efficiency @ PO1 = PO2 80 75 70 36Vin 65 48Vin 60 75Vin 55 0 3 6 9 12 LOAD CURRENT IO1 = IO2 [A] 15 Figure 14. Efficiency curve for balanced output current (IO1 = IO2) at various input voltages; taken at TA=25ºC with the converter mounted vertically and with 400LFM airflow directed from Pin 3 to Pin 1. SHEET 13 OF 19 Technical Reference Notes ALQ15XX48X Series (Open Frame Dual Output Quarter Brick) Performance Curves (continued) CURRENT VS. TEMPERATURE CURVES Output Power VS Ambient Temperature (5V/3.3V) Figure 15. Total Output Power (balanced load: IO1 = IO2) vs. Ambient Temperature Curves for ALQ15AF48 version taken at various airflow conditions (converter mounted horizontally with airflow direction from PIN 3 to PIN1; VIN = 48V nominal). 70 Total Power (W) 60 50 40 0 LFM 100 LFM 200 LFM 300 LFM 400 LFM 30 20 10 0 5 15 25 35 45 55 65 75 85 o Ambient Temperature ( C) Figure 16. Total Output Power (balanced load: IO1 = IO2) vs. Ambient Temperature Curves for ALQ15FG48 version taken at various airflow conditions (converter mounted horizontally with airflow direction from PIN 3 to PIN1; VIN = 48V nominal). Output Power VS. Ambient Temperature (3.3V/2.5V) 70 Total Power (W) 60 50 40 0 LFM 100 LFM 200 LFM 300 LFM 400 LFM 500 LFM 600 LFM 30 20 10 0 5 15 25 35 45 55 65 75 85 o Ambient Temperature ( C) MODEL: ALQ15 SERIES MARCH 4, 2004 - REVISION 01 SHEET 14 OF 19 Technical Reference Notes ALQ15XX48X Series (Open Frame Dual Output Quarter Brick) Performance Curves (continued) CURRENT VS. TEMPERATURE CURVES Output Power VS. Ambient Temperature (3.3V/1.8V) Figure 17. Total Output Power (balanced load: IO1 = IO2) vs. Ambient Temperature Curves for ALQ15FY48 version taken at various airflow conditions (converter mounted horizontally with airflow direction from PIN 3 to PIN1; VIN = 48V nominal). 70 Total Power (W) 60 50 40 0 LFM 100 LFM 200 LFM 300 LFM 400 LFM 500 LFM 600 LFM 30 20 10 0 5 15 25 35 45 55 65 75 85 o Ambient Temperature ( C) Figure 18. Total Output Power (balanced load: IO1 = IO2) vs. Ambient Temperature Curves for ALQ15GM48 version taken at various airflow conditions (converter mounted horizontally with airflow direction from PIN 3 to PIN1; VIN = 48V nominal). Output Power VS. Ambient Temperature (2.5V/1.5V) 70 Total Power (W) 60 50 40 0 LFM 100 LFM 200 LFM 300 LFM 400 LFM 500 LFM 600 LFM 30 20 10 0 5 15 25 35 45 55 65 75 85 o Ambient Temperature ( C) MODEL: ALQ15 SERIES MARCH 4, 2004 - REVISION 01 SHEET 15 OF 19 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 19. YSC Plots of 3V3 and 2V5 Output Channels. MODEL: ALQ15 SERIES MARCH 4, 2004 - REVISION 01 SHEET 16 OF 19 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 20. YSC Plots of 1V8 and 1V5 Output Channels. MODEL: ALQ15 SERIES MARCH 4, 2004 - REVISION 01 SHEET 17 OF 19 Technical Reference Notes ALQ15XX48X Series (Open Frame Dual Output Quarter Brick) Mechanical Specifications Parameter Dimension Device All Symbol L W H Min - Weight Typ 2.30 [58.4] 1.48 [37.6] 0.50 [12.6] - PIN ASSIGNMENT 1 2 3 4 +VIN ENABLE -VIN +VO2 5 6 7 Max - Unit in [ mm ] in [ mm ] in [ mm ] TBD g [oz] Secondary Return/ Ground TRIM +VO1 NOTE: Pin diameters at ∅ = 0.04" [1.02 mm] nominal. Pin placement tolerance ± 0.005 [0.127] Mechanical tolerance ± 0.02 [0.5] 7 1 2 C L 3 6 5 4 TOPDOWN PIN SIDE SIDE SIDE FRONT PIN SIDE UP Figure 21. ALQ15 series mechanical outline ( inches [(mm ]). MODEL: ALQ15 SERIES MARCH 4, 2004 - REVISION 01 SHEET 18 OF 19 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 110°C and wave soldered at 260°C for less than 10 seconds. When hand soldering, the iron temperature should be maintained at 425°C 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 OUTPUT OUTPUT VOLTAGE VOLTAGE 1 2 ALQ15 v w A = 5.0V F = 3.3V F = 3.3V G = 2.5V F = 3.3V G = 2.5V Y = 1.8V M = 1.5V PIN LENGTH OPTION ENABLE LOGIC 48 x “Blank” = Positive "N" = Negative - SPECIAL FEATURE y z “Blank” = 5mm (Std) “-6” = 3.7mm “D” – Special Trim function TABLE 2. Part Numbering information. Please call 1-888-41-ASTEC for further inquiries or visit us at www.astecpower.com MODEL: ALQ15 SERIES MARCH 4, 2004 - REVISION 01 SHEET 19 OF 19