4-Phase, 160-A synchronous buck converter reference design for communications processor power PMP21814 (ACTIVE)

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Key Document

Description

This reference design uses four TPS546D24 converters with integrated MOSFETs to support a full load of 160A at a 0.9V output. The system operates at a switching frequency of 650 kHz and has a PMBus interface that can be used to configure key converter parameters, including internal compensation. The detailed test report includes efficiency, thermal, stability, and load transient results.

Features
  • 12V input, 0.9V output with full load of 160A
  • Very good output voltage regulation accuracy of 0.11% 
  • Accurate load sharing between 4 integrated converters
  • Fixed-frequency current-mode control and programmable internal compensation
  • PMBus interface for configuration and monitoring of key converter parameters
  • Designed for communications base-band and remote radio units

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Design Files

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Parametrics
 PMP21814.1
(Output Voltage 1)
Vin (Min) (V)9
Vin (Max) (V)13
Vout (Nom) (V).9
Iout (Max) (A)160
Output Power (W)144
Isolated/Non-IsolatedNon-Isolated
Input TypeDC
TopologyBuck- Multiphase

TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD16408Q5  25V, N ch NexFET MOSFET™, single SON5x6, 6.8mOhm  MOSFETs  Sample & Buy Not Available
TPS546D24  2.95-V to 16-V input, stackable 40-A, SWIFT™ synchronous buck converter with PMBus®  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
TPS82130  3-A 17V Step-down Converter Module with Integrated Inductor  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD16408Q5 Download Download
TPS546D24 Download Download
TPS82130 uSiP (SIL)| 8 Download Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 1713 01 Mar 2019
Design files (6)
Title Type Size (KB) Date
ZIP 880 01 Mar 2019
ZIP 1988 01 Mar 2019
PDF 1771 01 Mar 2019
PDF 341 01 Mar 2019
PDF 101 01 Mar 2019
PDF 361 01 Mar 2019

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