ALQ25_03 ASTEC | Alldatasheet

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(Open Frame Single Output Quarter Brick) MODEL: ALQ25 SERIES SHEET 1 OF 15 Dec 1, 2003 - REVISION B ALQ25 Single Output Open-Frame DC-DC Converter Module Industry Standard ¼ Brick: 36V-75V Input / 5V Output The ALQ25 series is Astec's next generation single output, high-density standard quarter brick offering. It operates from a 36V to 75V DC Bus and comes in different Isolated Logic Output voltages (ILO) well suited for DPA applications. It’s designed to conservatively handle 25A of output current for 5V and at high levels of efficiency (5V @ 91%). It provides tight regulation and exhibits clean and monotonic output start up characteristics. The ALQ25’s come with industry standard features such as Input UVLO, OCP, OVP, OTP, Output Trim, differential output Sense pins. Special Features

  • Industry Standard ¼ Brick Footprint
  • Positive and Negative Enable Options
  • Regulation to Zero Load
  • High Capacitive Load Start-up
  • Fixed Switching Frequency at 200kHz
  • Output Trim
  • Input Under-Voltage Lockout
  • Low profile / open-frame Environmental Specifications
  • -40ºC to 85ºC Operating Temperature (200LFM)
  • -40ºC to 120ºC Storage Temperature
  • MTBF > 1 million hours Electrical Parameters Input Input Range 36-75 VDC Input Surge 100V / 100ms Efficiency 91% (Typ) Control Enable TTL compatible (Positive and Negative Enable Options) Output Load Current 5.0V @ 25A max Line Regulation 0.2 %Vo Load Regulation 0.4 % VO Ripple and Noise 150mVPK-PK max for 5V Output Voltage Adjust Range ±10% VO Transient Response 5% VO deviation (Typ) 50% to 75% Load Change 400mmsec settling time (Typ) Remote Sense +10%VO Over Current Protection 140% IO,MAX Safety UL + cUL 60950, Recognized (Pending) EN60950 through TUV-PS (Pending)

(Open Frame Single Output Quarter Brick) MODEL: ALQ25 SERIES SHEET 2 OF 15 Dec 1, 2003 - REVISION B ALQ25 Series THIS SPECIFICATION COVERS THE REQUIREMENTS FOR A NEW ¼-BRICK SIZE 25A SINGLE OUTPUT HIGH EFFICIENCY DC/DC CONVERTER. MODEL NAME VOUT / IOUT CONSTRUCTION Serial No. Prefix ALQ25A48 5.0V/25A B737 ALQ25A48N 5.0V/25A B742 ALQ25A48-7 5.0V/25A C511 ALQ25A48N-7 5.0V/25A C514 OPTIONS: SUFFIX Negative Enable: "N" Positive Enable: No suffix 5.8mm pin option -7

(Open Frame Single Output Quarter Brick) MODEL: ALQ25 SERIES SHEET 3 OF 15 Dec 1, 2003 - REVISION B Electrical Specifications STANDARD TEST CONDITION on a single module unless otherwise specified. TA 25°C (Ambient Air) Airflow See derating curve -VIN PIN 1 48V ± 2V ENABLE PIN 2 Dependent on model series +VIN PIN 3 Return pin for +VIN -VOUT PIN 4 Connected to Load (return) -Sense PIN 5 Connected to -VOUT Trim PIN 6 Open +Sense PIN 7 Connected to +VOUT +Vout PIN 8 Connected to Load 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 Voltage 1 Continuous Transient (100ms) All All VIN VI N, trans 100 Vdc Vdc Isolation Voltage Input to Output All - - 1500 Vdc Operating Ambient Temperature (200LFM) All TA -40 - +85 ºC Storage Temperature All TSTG -40 - 120 ºC Operating Humidity All - - - 85 % Max Output Power A (5.0V) PO - - 125 W

(Open Frame Single Output Quarter Brick) MODEL: ALQ25 SERIES SHEET 4 OF 15 Dec 1, 2003 - REVISION B INPUT SPECIFICATION Parameter Device Symbol Min Typ Max Unit Operating Input Voltage All VIN 36 48 75 VDC Input Under-Voltage Lock-out T_ON Thresh old T_OFF Threshold All Vdc Maximum Input Current 1 Conditions: VIN =VIN,min IO = IO,max; TA = 25 ºC A (5.0V) IIN,max - - 6 A Max PDISS @ IO = 0A (VIN = VIN,NOM ) A (5.0V) - - 7.5 W Input Reflected Ripple Current 2 Conditions: PO = PO,max; TA = 25 ºC BW: 5Hz to 20MHz All II1/ II2 - - 260 mAPK -PK Note: 1. An input line fuse is recommended for use. 2. External input capacitance required. See Input Ripple Current test measurement setup on Fig 1. OUTPUT SPECIFICATIONS Parameter Device Symbol Min Typ Max Unit Output Voltage Set point VIN = VIN, min to VIN, max; IO =IO,Max A (5.0V) VO,SET 4.9 5.0 5.1 Vdc Output Regulation Line: VIN = VIN, Min to VIN, Max Load: IO = IO, Min to IO, Max Temperature: Ta = -40 ºC to +85ºC A (5.0V) A (5.0V) 0.1 0.2 0.2 0.4 0.02 %Vo %Vo % / °C Ripple and Noise 3 Peak-to-Peak: (5Hz to 20MHz) A (5V) - 150 mVp-p Output Current 4 A (5V) IO 0 - 25 A External Load Capacitance A (5V) - 470 - 8000 µF Output Current-limit Inception VOUT = 90% VO,SET A (5V) IO 27.5 - 35 A

(Open Frame Single Output Quarter Brick) MODEL: ALQ25 SERIES SHEET 5 OF 15 Dec 1, 2003 - REVISION B OUTPUT SPECIFICATIONS Parameter Device Symbol Min Typ Max Unit Over Voltage Protection Range A (5.0V) 6 7 V Over Temperature Range (AVG PCB TEMPERATURE) All 110 - 120 °C Efficiency VIN = VIN-NOM ; IO = IO,MAX TA=25°C A (5.0V) η 89 91 - Turn-On Response Time VIN = VIN-MIN to VIN-MAX All - - - 20 ms Switching Frequency All -

200 KHz

Dynamic Response 5: ΔIO/Δt=0.1A / uS Load Change from I O = 10% to 100% of IO, Max: Peak Deviation Settling Time to V O, Nom Load Change from I O = 50% to 25% of IO, Max: Peak Deviation Settling Time to V O, Nom 0.1 250 400 500 250 A/µs mV µs mV µs Output Overshoot at T-on / T-off Passive Resistive Full Load All - - - 5 %Vo Note: 3. See Figure 2 for Ripple and Noise test measurement setup. 4. Appropriate Thermal Derating applies. See Figure 13 for the Thermal Derating Curves 5. The Dynamic Deviation and Recovery time are defined as below

(Open Frame Single Output Quarter Brick) MODEL: ALQ25 SERIES SHEET 6 OF 15 Dec 1, 2003 - REVISION B FEATURE SPECIFICATION Parameter Device Symbol Min Typ Max Unit Output Enable ON/OFF 10 Negative Enable ("N" suffix) Enable Pin voltage for Module ON Module OFF N suffix -0.7 3.5 1.2 V V Positive Enable (No suffix) Enable Pin voltage for Module ON Module OFF No suffix 3.5 -0.7 1.2 V Output Voltage Remote Sensing 11,13 All - - - 10 %VO Output Voltage Trim Range 12,13 All 90 110 %VO Note: 10. See Basic Operation and feature section for the recommended/ appropriate Module Enable configuration. 11. 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 7 (+Sense) and Pin 5 (-Sense) should be connected to Pin 8 (+ Vout) and Pin 4 (Return) respectively at the point where regulation is desired. 12. Refer to Equation (1) and (2) and Figures 3 and 4 for the Output Trim Adjust configuration. 13. The combination of remote sense and Trim adjust cannot exceed 110% of V O, NOM. ISOLATION SPECIFICATION Parameter Device Symbol Min Typ Max Unit Isolation Capacitance All - - 1000 - pF Isolation Resistance All - 10 1000 - MΩ SAFETY APPROVAL The ALQ25 series have been certified through:

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

Figure 3. Setup for Parametric Test. F1: Fuse*: Use external fuse (fast blow type 10A) for each unit.

(Open Frame Single Output Quarter Brick) MODEL: ALQ25 SERIES SHEET 10 OF 15 Dec 1, 2003 - REVISION B OUTPUT ENABLE The ALQ25 series 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 -V IN. On the other hand, the Negative Enable version turns unit on when the ENABLE pin is at logic LOW or directly connected to -V IN. The unit turns off when the ENABLE pin is at Logic HIGH. OUTPUT OVER VOLTAGE PROTECTION (OVP) The Over-Voltage Protection consists of circuitry that monitors the voltage on the output terminals. If the output voltage exceeds the Over Voltage Protection threshold limit, module will work on intermittent model. When the Over Voltage condition is removed, the module will automatically restart. The protection mechanism is such that the unit can continue in this condition until the fault is cleared. OVER CURRENT PROTECTION (OCP) The Over Current Protection circuit comes in latching mode. The converter is latched off if the load current on the output reaches the OCP threshold limit. The OCP latch can be reset either by cycling the input voltage or toggling the Enable signal for 100ms. Consult factory for Auto-restart option. The Over Current Protection (OCP) circuit comes in foldback current limit. If output current exceed the OCP threshold limit, or at a short circuit condition, the module will work on intermittent model. When the Over Current condition is removed, the module will automatically restart. OVER TEMPERATURE PROTECTION (OTP) These modules feature an over-temperature protection circuit to safeguard against thermal damage. The module will work on intermittent mode when the maximum device reference temperature is exceeded. When the over-temperature condition is removed, the converter will automatically restart

(Open Frame Single Output Quarter Brick) MODEL: ALQ25 SERIES SHEET 12 OF 15 Dec 1, 2003 - REVISION B CURRENT VS. TEMPERATURE CURVES Derating curve of ALQ25A48. ALQ25A48 36v DERATING CURVE 0.0 5.0 10.0 15.0 20.0 25.0 25 40 55 70 85 Temperature (C) OUTPUT CURRENT (A)

000 LFM

100 LFM

200 LFM

400 LFM

ALQ25A48 48v DERATING CURVE 0.0 5.0 10.0 15.0 20.0 25.0 25 40 55 70 85 Temperature (C) OUTPUT CURRENT (A)

300 LFM

(Open Frame Single Output Quarter Brick) MODEL: ALQ25 SERIES SHEET 13 OF 15 Dec 1, 2003 - REVISION B ALQ25A48 75v DERATING CURVE 0.0 5.0 10.0 15.0 20.0 25.0 25 40 55 70 85 Temperature (C) OUTPUT CURRENT (A)

Figure 15. ALQ25 Series Mechanical Outline Drawing

(Open Frame Single Output Quarter Brick) MODEL: ALQ25 SERIES SHEET 15 OF 15 Dec 1, 2003 - REVISION B Mechanical Specifications (continued) SOLDERING CONSIDERATIONS The ALQ25 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 CURRENT OUTPUT VOLTAGE INPUT VOLTAGE ENABLE LOGIC ALQ25 x 48 y A = 5.0V N = Negative Enable “Blank”= Positive Enable (Default) Please call 1-888-41-ASTEC for further inquiries or visit us at www.astecpower.com