3-V to 4.5-V Input, 400-mA, –12-V Inverting Buck-Boost Reference Design

(ACTIVE) TIDA-01423

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Key Document

Description

This small and simple inverting power reference design features a high accuracy step-down converter in an inverting buck-boost topology. It generates a -12-V output at 400 mA of current from a 3-V to 4.5-V input voltage, enabling to cleanly power negative voltage rails in space-constrained applications such as optical networking systems for telecom infrastructure, active and distributed antenna systems or remote radio unit for wireless infrastructure, as well as for test and measurement applications in industrial.

Features
  • High Negative Output Voltage of –12 V
  • Total Solution Size Less Than 65mm2
  • High Output Current of 400mA
  • Low Output Voltage Ripple (<0.5 %)
  • Input Voltage Range of 3 V to 4.5 V
  • 125°C Rated Solution

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Schematic/Block Diagram

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Design Files

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Bill of Materials (BOM)

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Parametrics
 TIDA-01423.1
(Output Voltage 1)
Vin (Min) (V)3
Vin (Max) (V)4.5
Vout (Nom) (V)-12
Iout (Max) (A).4
Output Power (W)4.8
Isolated/Non-IsolatedNon-Isolated
Input TypeDC
TopologyBuck Boost- Inverting

TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
TPS62136  3-17V 4.0A Step-Down Converter with 1% accuracy and PFM/Forced-PWM in 2x3QFN  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
TPS62136 Download Download

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Technical Documents

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User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 2425 18 Jun 2017 30
Design files (5)
Title Abstract Type Size (KB) Date Views
ZIP 307 18 Jul 2017 3
PDF 342 18 Jul 2017 9
PDF 71 18 Jul 2017 7
PDF 60 18 Jul 2017 7
PDF 115 18 Jul 2017 48

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