Battery back-up switch, charger and monitor reference design
PMP22125
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Description & Features

Technical documentation

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Key Document

Description

A complete battery back-up, charger and monitoring is implemented with this reference design.  It includes switching between a 12/24-Vdc source and 12/24-V lead acid battery, constant current battery charging at 1A typical, battery maintenance float charge and monitoring circuits for the battery and input source.

Features
  • Switches with reverse current protection
  • 16-A continuous current from DC source or battery
  • Constant current battery charging at 1 A
  • Battery maintenance float charging
  • Input LED and output LED status signals

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Schematic/Block Diagram

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Design Guide

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Design Files

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Parametrics
 PMP22125.1
(Output Voltage 1)
PMP22125.2
(Output Voltage 2)
Vin (Min) (V)8.518.5
Vin (Max) (V)17.536.5
Vout (Nom) (V)1224
Iout (Max) (A)11
Output Power (W)1224
Isolated/Non-IsolatedNon-IsolatedNon-Isolated
Input TypeDCDC
TopologyBuck Boost- 4 Switch
Hot Swap
Buck Boost- 4 Switch
Hot Swap

TI Devices (13)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD17313Q2  30V, N ch NexFET MOSFET™, single SON2x2, 32mOhm  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
CSD18531Q5A  60V, N ch NexFET MOSFET™, single SON5x6, 4.6mOhm  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
CSD18543Q3A  60V, N ch NexFET MOSFET™, single SON3x3, 9.9mOhm  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
INA301  36V, 550kHz, 4V/µs, high-precision current sense amplifier w/ comparator  Current sense amplifiers  Sample & Buy View Design Kits & Evaluation Modules
LM5060  5.5-V to 65-V high side protection controller  Power switches  Sample & Buy View Design Kits & Evaluation Modules
LM5176  55V wide VIN synchronous 4-switch buck-boost controller  Buck-boost & inverting regulators  Sample & Buy View Design Kits & Evaluation Modules
SN74LV1T32  Single Power Supply 2-INPUT POSITIVE OR GATE with Logic Level Shifter  Voltage level translators  Sample & Buy View Design Kits & Evaluation Modules
SN74LVC1G07  Single Buffer/Driver With Open-Drain Output  Buffer/driver  Sample & Buy View Design Kits & Evaluation Modules
SN74LVC2G08  Dual 2-Input Positive-AND Gate  Gate  Sample & Buy View Design Kits & Evaluation Modules
TLV6710  Low power, high voltage window comparator with integrated reference  Amplifiers  Sample & Buy View Design Kits & Evaluation Modules
TPS22929D  5.5-V, 1.8-A, 115-mΩ load switch with output discharge  Power switches  Sample & Buy View Design Kits & Evaluation Modules
TPS3803  Low-power voltage detector  Power management  Sample & Buy Not Available
TPS7A16  100-mA, 60-V, ultra-low-IQ, low-dropout voltage regulator with power good & enable  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD17313Q2 WSON (DQK)| 6 Download -
CSD18531Q5A VSONP (DQJ)| 8 Download
CSD18543Q3A VSONP (DNH)| 8 Download Download
INA301 Download Download
LM5060 Download Download
LM5176 Download Download
Download
SN74LV1T32 Download Download
Download Download
SN74LVC1G07 Download -
Download Download
Download Download
Download
Download Download
Download -
Download Download
Download Download
SN74LVC2G08 Download Download
Download Download
Download -
Download -
TLV6710 Download Download
TPS22929D Download Download
TPS3803 Download Download
TPS7A16 Download Download
Download Download

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Technical documentation

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User guides (1)
Title Type Size (KB) Date
PDF 2229 13 May 2020
Design files (6)
Title Type Size (KB) Date
ZIP 1640 13 May 2020
ZIP 1662 13 May 2020
PDF 2025 13 May 2020
PDF 415 13 May 2020
PDF 334 13 May 2020
PDF 464 13 May 2020

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