Lowest noise auxiliary dual output power supply reference design
PMP30473
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Key Document

Description

This reference design is a 2 x 1-W inverting buck boost converter. The two output voltages (+5 V and -5 V) are produced from one single buck silicon (TPS57160-Q1). Post regulators (and post filters) ensure ripple free output voltages. Input voltage range covers automotive and industrial applications. 

Features
  • Input filter ensures lowest reflected ripple
  • Power stage withstands surge voltages up to 42 V
  • Circuit tolerates cranking down to 4 V
  • Temperature rise is less than 20 K at full load and with nominal automotive input voltage

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Schematic/Block Diagram

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Design Guide

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Design Files

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Parametrics
 PMP30473.1
(Output Voltage 1)
PMP30473.2
(Output Voltage 2)
Vin (Min) (V)44
Vin (Max) (V)4242
Vout (Nom) (V)5-5
Iout (Max) (A).2.2
Output Power (W)11
Isolated/Non-IsolatedNon-IsolatedNon-Isolated
Input TypeDCDC
TopologyBuck Boost- Inverting
Buck Boost- Non Sync
Buck Boost- Inverting
Buck Boost- Non Sync

TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
TPS57160-Q1  Automotive 3.5V to 60V, 1.5A Buck Converter with Eco-Mode™  Step-down (buck) regulators  Sample & Buy View Design Kits & Evaluation Modules
TPS723-Q1  Automotive 200-mA, negative, adjustable low-dropout voltage regulator with enable  Power management  Sample & Buy Not Available
TPS799-Q1  Automotive 200-mA, low-IQ, low-dropout voltage regulator with enable  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
TPS57160-Q1 Download Download
Download Download
TPS723-Q1 Download Download
TPS799-Q1 Download -
Download Download

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Technical documentation

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User guides (1)
Title Type Size (KB) Date
PDF 3312 26 Sep 2019
Design files (6)
Title Type Size (KB) Date
ZIP 22 26 Sep 2019
ZIP 577 26 Sep 2019
PDF 421 26 Sep 2019
PDF 95 26 Sep 2019
PDF 136 26 Sep 2019
PDF 101 26 Sep 2019

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