AEQ75Y48 ASTEC | Alldatasheet

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(Single Output Quarter Brick) MODEL: AEQ75Y48 SERIES SHEET 1 OF 12 JULY 21, 2005 - REVISION 01 AEQ75Y48 Single Output: Baseplate DC-DC Converter Module Industry Standard ¼ Brick: 36V-75V Input / 1.8V @ 75A Output Current The AEQ75Y48 series is the latest addition to Astec’s quarter brick size offerings. At 1.8V, it delivers 75A maximum output current at 89% Efficiency. It provides tight regulation and exhibits clean and monotonic output start up characteristics. The new modules come with industry standard features such as Input UVLO, OCP, OVP, OTP, Output Trim, differential output Sense pins. It al so comes standard with 2 pairs of output power pins (add suffix “ -3” for single pair output pin option) and offers baseplate construction for optimum user flexibility. Special Features

  • Industry Standard ¼ Brick Footprint
  • Redundant output power pins (with single pair option)
  • Positive and Negative Enable Options
  • Regulation to Zero Load
  • High Capacitive Load Start-up
  • Output Trim
  • Input Under-Voltage Lockout
  • Low profile Environmental Specifications
  • -40ºC to 105ºC Operating Temperature
  • -55ºC to 125ºC Storage Temperature
  • MTBF > 1 million hours Electrical Parameters Input Input Range 36-75 VDC Input Surge 100V / 100ms Efficiency 1.8V @ 89% (Typ) Control Enable TTL compatible (Positive and Negative Enable Options) Output Load Current 1.8V @ 75A max Line/Load Regulation < 1% VO Ripple and Noise 100mVPK-PK max Output Voltage Adjust Range ±10% VO Transient Response < 100mV deviation (Typ) 50% to 75% Load Change 100msec settling time (Typ) Remote Sense +10%VO Over Current Protection 120% IO,MAX Safety UL + cUL 60950, Recognized EN60950 through TUV-PS

(Single Output Quarter Brick) MODEL: AEQ75Y48 SERIES SHEET 2 OF 12 JULY 21, 2005 - REVISION 01 Electrical Specifications 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 Device Symbol Min Typ Max Unit Input Voltage1 Continuous Transient (100ms) All All VIN VI N, trans 100 Vdc Vdc Isolation Voltage Input to Output Input to Baseplate Output to Baseplate All 1500 Vdc Operating Ambient Temperature All TA -40 - 105 ºC Storage Temperature All TSTG -55 - 125 ºC Operating Humidity All - 10 - 85 % Maximum Enable Voltage All 25 Vdc Max Output Power PO - - 135 W STANDARD TEST CONDITION on a single module unless otherwise specified. TA 25°C (Ambient Air) Airflow 400LFM +VIN PIN 1 +48Vdc input supply Enable PIN 2 Dependent on model series -VIN PIN 3 Return pin for +VIN -VOUT PIN 4 Connected to Load Return [Optional Pin] -VOUT PIN 5 Connected to Load Return -Sense PIN 6 Connected to -VOUT Trim PIN 7 Open +Sense PIN 8 Connected to +VOUT +Vout PIN 9 Connected to +Load +Vout PIN 10 Connected to +Load [Optional Pin]

(Single Output Quarter Brick) MODEL: AEQ75Y48 SERIES SHEET 3 OF 12 JULY 21, 2005 - REVISION 01 Electrical Specifications (continued) INPUT SPECIFICATION Parameter Device Symbol Min Typ Max Unit Operating Input Voltage All VIN VDC Input Under-Voltage Lock-out T_ON Threshold T_OFF Threshold All 34.8 33.5 35.5 34.5 Vdc Maximum Input Current1 Conditions: VIN =VIN,min IO = IO,max; TA = 25 ºC All IIN,max - 4.5 A Max PDISS @ IO = 0A (VIN = VIN,NOM) @ 25 ºC All - 3 4 W Input Reflected Ripple Current2 Conditions: PO = PO,max; TA = 25 ºC BW: 5Hz to 20MHz All II1 - 10 20 mAPK-PK OUTPUT SPECIFICATIONS Parameter Device Symbol Min Typ Max Unit Output Voltage Set point VIN = VIN, min to VIN, max; IO =IO,Max All VO,SET 1.770 1.800 1.830 Vdc Output Regulation Line: VIN = VIN, Min to VIN, Max Load: IO = IO, Min to IO, Max Temperature: Ta = -40 ºC to +85ºC All All All 0.10 0.05 0.30 0.20 %Vo %Vo mV Ripple and Noise3 RMS (5Hz to 20MHz) Peak-to-Peak: (5Hz to 20MHz) All 100 mVRMS mVp-p Output Current4 All IO 0 - 75 A External Load Capacitance Capacitor ESR All - - 25,000 µF mΩ Output Current-limit Inception5 VOUT = 90% VO,SET All IO 78 80 90 A Over Voltage Protection Range5 All 2.1 - 2.9 V Over Temperature Range6 AEQ (referenced to avg Baseplate temp) AEQ TBP 110

(Single Output Quarter Brick) MODEL: AEQ75Y48 SERIES SHEET 4 OF 12 JULY 21, 2005 - REVISION 01 Electrical Specifications (continued) OUTPUT SPECIFICATIONS Parameter Device Symbol Min Typ Max Unit Efficiency VIN = VIN-NOM; TA=25°C All η Turn-On Response Time VIN = VIN-MIN to VIN-MAX All ms Switching Frequency All - 440 - 520 KHz Dynamic Response: CO = 0uF Peak Deviation Load Change from IO = 50% to 75% of IO, Max: Settling Time to VO, Nom Peak Deviation Load Change from IO = 50% to 25% of IO, Max: Settling Time to output voltage setpoint tolerance – Vo,SET Δ IO/Δ t All All Vpk ts Vpk ts 0.09 0.1 100 100 1.1 300 300 A/µs %Vo,SET µs %Vo,SET µs Output Overshoot at T-on / T-off All - - - 4 %Vo Note: 1. An input line fuse is recommended for use. 2. External input capacitance required. See Input Ripple Current test measurement setup on Figure 1. 3. Refer to Figure 2 for output ripple measurement setup. 4. Appropriate Thermal Derating applies. See Figure 6. 5. Over current and over voltage protections are all in auto recovery mode. The converter will shutdown during fault condition then will attempt to auto restart. 6. Output of the module will be terminated once the operating temperature reaches the OTP threshold. Normal operation resumes once the temperature falls below the OTP threshold.

(Single Output Quarter Brick) MODEL: AEQ75Y48 SERIES SHEET 5 OF 12 JULY 21, 2005 - REVISION 01 Electrical Specifications (continued) FEATURE SPECIFICATION Parameter Device Symbol Min Typ Max Unit Output Enable ON/OFF Negative Enable ("N" suffix) Enable Pin voltage for Module OFF Module ON N suffix 2.95 20.0 0.8 V V Positive Enable (No suffix) Enable Pin voltage for Module ON Module OFF No suffix 2.95 0.8 20.0 V V Enable Pin current Module at ON State Module at OFF State (Leakage) All mA µA Output Voltage Remote Sensing7, 9 All - - - 10 %VO Output Voltage Trim Range8, 9 All 90 110 %VO Note: 7. The sense pins can be used to compensate for any voltage drops (per indicated max limits) that may occur along the connection between the output pins to the load. Pin 8 (+Sense) and Pin 6 (-Sense) should be connected to Pin 9 (+Vout) and Pin 5 (Return) respectively at the point where regulation is desired. 8. Refer to Equation (1) and (2) and Figures 3 and 4 for the Output Trim Adjust configuration. 9. The combination of remote sense and Trim adjust cannot exceed 110% of VO, NOM. ISOLATION SPECIFICATION Parameter Device Min Typ Max Unit Isolation Capacitance All - 2.70 - nF Isolation Resistance All 10 - - MΩ MTBF Telcordia SR332 (Parts Stress) TA = 40°C; IO = 30A; Airflow = 200LFM 1,029,514 Hrs SAFETY APPROVAL The AEQ75Y48 series have been certified through:

  • UL + cUL 60950, Third Edition - Recognized
  • EN 60950 through TUV-PS

(Single Output Quarter Brick) MODEL: AEQ75Y48 SERIES SHEET 8 OF 12 JULY 21, 2005 - REVISION 01 Basic Operation and Features (continued) OUTPUT ENABLE The converter 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” requ ired) 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 unit 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 comes in shutdown mode. The output of the converter is terminated under an OVP fault condition (Vo > OVP threshold). The converter will automatically recover once the fault condition is removed. OVER CURRENT PROTECTION (OCP) The Over Current Protection circuit comes in shutdown mode. The converter shuts down once the output current reaches the OCP range. The converter will automatically recover once the fault condition is removed. OVER TEMPERATURE PROTECTION (OTP) The Over Temperature Protection circuit will shutdown the converter once the average PCB temperature 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.

Figure 8. Output Ripple Waveform at VIN = 48Vdc, Figure 7. Output Power Derating Curves at VIN = 48Vdc.

0 LFM (0 m/s)

200 LFM (1 m/s)

400 LFM (3 m/s)

Figure 5. Efficiency vs. Load Current at Baseplate Figure 6. Power Dissipation vs. Load Current at Baseplate

2 ENABLE 7 TRIM

Figure 13. AEQ75Y48 (Baseplate) Mechanical Outline Drawing

(Single Output Quarter Brick) MODEL: AEQ75Y48 SERIES SHEET 12 OF 12 JULY 21, 2005 - REVISION 01 Mechanical Specifications SOLDERING CONSIDERATIONS The AEQ75Y48 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 Part Number Construction Vout / Iout / Enable Logic Pin Length Pin Out Option AEQ75Y48 Baseplate 1.8V / 75A; Positive Enable 5.0 mm Pins 4 & 10: Present AEQ75Y48-3 Baseplate 1.8V / 75A; Positive Enable 5.0 mm Pins 4 & 10: Omitted AEQ75Y48N Baseplate 1.8V / 75A; Negative Enable 5.0 mm Pins 4 & 10: Present AEQ75Y48N-3 Baseplate 1.8V / 75A; Negative Enable 5.0 mm Pins 4 & 10: Omitted AEQ75Y48N-TI1 Baseplate 1.8V / 75A; Negative Enable 3.7 mm Pins 4 & 10: Present Note: 1 – Tuned version for specific customer application. Please call 1-888-41-ASTEC for further inquiries or visit us at www.astecpower.com