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TPS61382-Q1
  • TPS61382-Q1
  • TPS61382-Q1

TPS61382-Q1

ACTIVE

400kHz boost converter with 400kHz buck charger and battery health detection in back-up power

Texas Instruments TPS61382-Q1 Product Info

1 April 2026 0

Parameters

Rating

Automotive

Topology

Boost, Buck, Buck/Boost

Vin (max) (V)

3.8

Vin (min) (V)

0.5

Vout (max) (V)

12

Vout (min) (V)

5

Switch current limit (typ) (A)

15

Features

Adjustable current limit, Bidirectional, Enable, I2C interface, Spread-spectrum clocking (SSC), Synchronous rectification

EMI features

Frequency Dithering, Spread Spectrum

Control mode

current mode

Operating temperature range (°C)

-40 to 150

Iq (typ) (A)

0.00002

Duty cycle (max) (%)

90

Package

WQFN-FCRLF (RAV)-24-12 mm² 4 x 3

Features

  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40°C to 125°C ambient operating temperature range
  • I2C programmable buck/LDO charger
    • Supports charger input voltage (VOUT Pin) up to 21V, absmax up to 40V to withstand load dump
    • Supports multi-chemistry battery charging profile of 1-2cell NiMH, 1cell Li-Ion, LiFePO4, 1 cell super capacitor
    • Programmable charging current up to 3A
    • Battery voltage operating range 0V to 3.8V
    • Programmable charging timer up to 32h
    • NTC thermistor input to monitor battery temperature
  • Programmable boost converter supporting 12V car battery backup power system
    • Programmable output voltage range: 5V to 12V
    • Programmable boost average input current limit from 5A to 15A
    • Back-up battery (BUB) voltage in boost mode: 0.5V to 3.8V
      • Minimum 3V for start up when Vout<2.8V
      • Minimum 1V for start up when Vout>2.8V
    • <20us automatic transition into the boost mode when 12V system voltage drops
  • Backup battery state-of-health(SOH) detection
    • Adjustable discharge current from 0A to 1.5A
    • Multi-signal analog output (AVI pin) of battery voltage, discharge current and battery temperature
  • Lower quiescent current and leakage current
    • 20µA quiescent current in standby mode
    • < 1µA shutdown current
    • < 1µA leakage current for pins connected to the backup battery
  • EMI mitigation
    • 400kHz fix switching frequency
    • Optional programmable spread spectrum
  • 3mm × 4mm 25-pin package with wettable flank

  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40°C to 125°C ambient operating temperature range
  • I2C programmable buck/LDO charger
    • Supports charger input voltage (VOUT Pin) up to 21V, absmax up to 40V to withstand load dump
    • Supports multi-chemistry battery charging profile of 1-2cell NiMH, 1cell Li-Ion, LiFePO4, 1 cell super capacitor
    • Programmable charging current up to 3A
    • Battery voltage operating range 0V to 3.8V
    • Programmable charging timer up to 32h
    • NTC thermistor input to monitor battery temperature
  • Programmable boost converter supporting 12V car battery backup power system
    • Programmable output voltage range: 5V to 12V
    • Programmable boost average input current limit from 5A to 15A
    • Back-up battery (BUB) voltage in boost mode: 0.5V to 3.8V
      • Minimum 3V for start up when Vout<2.8V
      • Minimum 1V for start up when Vout>2.8V
    • <20us automatic transition into the boost mode when 12V system voltage drops
  • Backup battery state-of-health(SOH) detection
    • Adjustable discharge current from 0A to 1.5A
    • Multi-signal analog output (AVI pin) of battery voltage, discharge current and battery temperature
  • Lower quiescent current and leakage current
    • 20µA quiescent current in standby mode
    • < 1µA shutdown current
    • < 1µA leakage current for pins connected to the backup battery
  • EMI mitigation
    • 400kHz fix switching frequency
    • Optional programmable spread spectrum
  • 3mm × 4mm 25-pin package with wettable flank

Description

The TPS61382Q1 is 400kHz, 40V, 15A automotive bi-directional boost converter/ buck charger with battery state of health detection function for back-up power like TBOX. The converter supports absmax voltage up to 40V on VOUT pin to withstand load-dump and supports connecting to 12V car battery.

The TPS61382Q1 integrates I2C configurable buck/LDO charger supporting NiMH, Li-Ion, LiFePO4, super capacitor.

TPS61382Q1 integrates boost function that operates over 0.5V to 3.8V BUB voltage and 5-12V output voltage. The device applies fix frequency peak current control scheme with optional spread spectrum to minimize EMI. The boost function supports 5A-15A programmable average current limit.

The TPS61382Q1 integrates battery health detection feature which discharges the battery with a constant current and detects the voltage drop across the battery internal resistance.

The TPS61382Q1 is available in a 3mm × 4mm QFN package with wettable flank. Care needs to be taken when designing the PCB with TPS61382Q1, view for details.

The TPS61382Q1 is 400kHz, 40V, 15A automotive bi-directional boost converter/ buck charger with battery state of health detection function for back-up power like TBOX. The converter supports absmax voltage up to 40V on VOUT pin to withstand load-dump and supports connecting to 12V car battery.

The TPS61382Q1 integrates I2C configurable buck/LDO charger supporting NiMH, Li-Ion, LiFePO4, super capacitor.

TPS61382Q1 integrates boost function that operates over 0.5V to 3.8V BUB voltage and 5-12V output voltage. The device applies fix frequency peak current control scheme with optional spread spectrum to minimize EMI. The boost function supports 5A-15A programmable average current limit.

The TPS61382Q1 integrates battery health detection feature which discharges the battery with a constant current and detects the voltage drop across the battery internal resistance.

The TPS61382Q1 is available in a 3mm × 4mm QFN package with wettable flank. Care needs to be taken when designing the PCB with TPS61382Q1, view for details.

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