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Summary of Contents for Huawei GDQ54S12B-4A
- Page 1 GDQ54S12B-4A DC-DC Converter Technical Manual Issue Date 2021-09-03 HUAWEI TECHNOLOGIES CO., LTD.
- Page 2 Notice The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS"...
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Page 3: About This Document
Technical Manual About This Document About This Document Purpose This document describes the GDQ54S12B-4A DC-DC converter, including its electrical specifications, features, applications, and communication. The figures provided in this document are for reference only. Intended Audience This document is intended for: ●... - Page 4 Issue 02 (2021-09-03) This issue is the second release. ● Added 6.2 Thermal Considerations. Issue 01 (2021-03-25) This issue is the first release. Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd.
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Page 5: Table Of Contents
7 Typical Waveforms........................ 20 7.1 Turn-on/Turn-off................................... 21 7.2 Output Voltage Dynamic Response..........................22 7.3 Output Voltage Ripple................................ 23 7.4 Output Voltage Rise Time..............................23 8 Input Anti-resonance Method.................... 24 9 Protection Characteristics....................25 Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd. - Page 6 GDQ54S12B-4A DC-DC Converter Technical Manual Contents 10 Product Packaging, Storage, and Transportation............26 A EMC Specifications........................28 Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd.
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Page 7: Safety Information
The statements in the document do not cover all the safety instructions. They are only supplements to the safety instructions. Huawei will not be liable for any consequence caused by the violation of general safety requirements or design, production, and usage safety standards. - Page 8 Otherwise, the converter may be faulty. Do not splash water on the converter. Keep the PSU far away from fire sources. Do not ignite the converter. ● Do not operate the converter with wet hands. Otherwise, electric shocks may occur. Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd.
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Page 9: Personnel Requirements
● During the installation, operation, and maintenance of the converter, no collision or drop is allowed. ● During the secondary assembly of the converter, do not introduce conductive foreign objects. Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd. -
Page 10: Electrical Safety
When holding the converter, hold its edge without touching any components. Do not touch the components with your bare hands. ● Package the removed converter with ESD packaging materials before storing or transporting it. Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd. -
Page 11: Product Overview
● Output overvoltage protection (hiccup Product Description mode) ● Overtemperature protection (self-recovery) The GDQ54S12B-4A is a new generation isolated DC-DC converter that uses an industry ● Remote on/off standard quarter-brick structure, featuring high ● UL certification efficiency and power density with low output ripple and noise. - Page 12 2 — Output current: 54 A 3 — Single output 4 — Output voltage: 12 V 5 — With a baseplate 6 — Pin length: 4.8 mm 7 — Version Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd.
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Page 13: Schematic Diagram
GDQ54S12B-4A DC-DC Converter Technical Manual 3 Schematic Diagram Schematic Diagram Figure 3-1 Internal schematic diagram of the converter Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd. -
Page 14: Electrical Specifications
External voltage applied to PMBus Altitude 5000 4.2 Input Table 4-2 Input specification Parameter Min. Typ. Max. Unit Notes & Conditions Operating input voltage Maximum input current = 0–75 V, I onom Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd. -
Page 15: Output
SMD aluminum solid capacitor or capacitance chip aluminum capacitor, ESR < 30 mΩ. Ripple and noise Oscilloscope bandwidth: 20 MHz. (peak to peak) Output voltage Full range of V , and T overshoot Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd. -
Page 16: Efficiency
= 25°C, V = 48 V 50% load 20% load 100% load = 25°C, V = 36 V 50% load 94.5 95.5 100% load = 25°C, V = 75 V 50% load Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd. -
Page 17: Protection
Hiccup mode, and system reports protection OVP protection Overtemperature °C Self-recovery; the overtemperature protection threshold protection hysteresis is obtained by measuring the temperature of Overtemperature °C the PCB near the temperature protection hysteresis sensor. Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd. -
Page 18: Dynamic Characteristics
V DC Functional insulation, leakage voltage current < 1 mA, altitude = 5000 m, without arc or breakdown Input to baseplate V DC insulation voltage Output to baseplate V DC insulation voltage Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd. -
Page 19: Other Characteristics
On/Off current low level On/Off current high level µA Mean time between Million Telcordia, SR332 Method 1 Case failures (MTBF) hours 3; 80% load, normal input/rated output; 300 LFM; T = 40°C. Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd. -
Page 20: Product Structure Overview
GDQ54S12B-4A DC-DC Converter Technical Manual 5 Product Structure Overview Product Structure Overview 5.1 Dimensions Figure 5-1 Dimensions Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd. -
Page 21: Pin Distribution
Converter remote on/off pin. For details –0.7 V to 12 V, V (–) as about the application method, see reference On/Off Pin. (–) Converter input pin, negative (–) Converter output pin, negative Converter output pin, positive Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd. -
Page 22: Pin Application
The main output of module can be turned on or turned off by On/Off signal. On/Off Pin Level Status Low level [–0.7 V, 1.2 V] High level [3.5 V, 12.0 V] On/Off Signal Max. On/Off current (low level) 1 mA Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd. - Page 23 GDQ54S12B-4A DC-DC Converter Technical Manual 5 Product Structure Overview Figure 5-3 Various circuits for driving the On/Off pin Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd.
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Page 24: Characteristic Curves
: dimensions (W x H x D): 36.8 mm x 10.0 mm x 57.9 mm; baseplate thickness: 2.0 mm; number of teeth: 9; teeth thickness: 1.8 mm; teeth spacing: 2.5 mm; material: Al6063-T5 Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd. - Page 25 = 12.0 V, with heatsink = 53.5 V; V = 12.0 V, without heatsink = 53.5 V; V = 12.0 V, with heatsink = 53.5 V; V = 12.0 V, without heatsink Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd.
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Page 26: Typical Waveforms
: The 0.1 µF ceramic capacitor is recommended. : The 10 µF aluminum electrolytic capacitor is recommended. Figure 7-2 Typical circuit applications : The 50 A fuse (fast-blow). : The 440 µF aluminum electrolytic capacitor is recommended. Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd. -
Page 27: Turn-On/Turn-Off
: The 660 µF SMD aluminum solid capacitor or chip aluminum capacitor is recommended (ESR < 30 mΩ). 7.1 Turn-on/Turn-off Startup from On/Off Shutdown from On/Off Startup by power-on Shutdown by power-off Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd. -
Page 28: Output Voltage Dynamic Response
(load: 25%–50%–25%, di/dt = 0.1 A/µs) (load: 25%–50%–25%, di/dt = 1 A/µs) Output voltage dynamic response Output voltage dynamic response (load: 50%–75%–50%, di/dt = 0.1 A/µs) (load: 50%–75%–50%, di/dt = 1 A/µs) Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd. -
Page 29: Output Voltage Ripple
10.4 V within 100 ms and then rises to terminal value at the rate of 0.033 V/s. The most time of [0, t1] is 100 ms, and most time of [t1, t2] is 50s. Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd. -
Page 30: Input Anti-Resonance Method
: equicalent series resistance (ESR) of the to the converter port external capacitor R1: resistance of the line from the input power to the converter port Resonance does not happen if the following formulas are satisfied: Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd. -
Page 31: Protection Characteristics
When the temperature exceeds the overtemperature protection threshold, the output will shut down. It will allow the converter to turn on again when the temperature of the sensed location falls by the value of the overtemperature protection hysteresis. Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd. - Page 32 "Handle with care" and "Keep dry". The packing case containing the product can be transported by any means. The packing case must be protected against rains, snows, and mechanical impact during transportation. Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd.
- Page 33 GDQ54S12B-4A DC-DC Converter Technical Manual 10 Product Packaging, Storage, and Transportation Enclosure Protection Table 10-1 Enclosure protection level Item Requirement Enclosure IP20 (normal maintenance surface) protection level Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd.
- Page 34 EN 55032, class A (6 dB) Surges DM 1 kV/CM 2 kV IEC/EN 61000-4-5, criterion B DC voltage dips, short 40%/70%/0% EN 61000-4-29, criterion B interruption, variation 80%/120% EN 61000-4-29, criterion A Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd.
- Page 35 Decide proper airflow to be provided by measuring the temperature at the middle of the baseplate shown in Figure A-3 to protect the converter against overtemperature. The overtemperature protection threshold is obtained based on this thermal test point. Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd.
- Page 36 For hand soldering, the iron temperature should be maintained at 350°C to 420°C and applied to the converter pins for less than 10 seconds. The converter can be rinsed using the isopropyl alcohol (IPA) solvent or other suitable solvents. Issue 02 (2021-09-03) Copyright © Huawei Technologies Co., Ltd.