TPS61381-Q1

ACTIVO

Convertidor boost de 400 kHz con cargador LDO y detección del estado de la batería

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Hoja de datos

document-pdfAcrobat TPS61381-Q1 Automotive 400kHz, 40V, 15A Boost Converter with LDO Charger and Battery State of Health Detection datasheet (Rev. A) (Inglés) PDF | HTML

TPS61381-Q1

ACTIVO

Hoja de datos

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Detalles del producto

Rating

Automotive

Topology

Boost

Vin (max) (V)

13

Vin (min) (V)

0.5

Vout (max) (V)

12

Vout (min) (V)

5

Switch current limit (typ) (A)

20

Features

Adjustable current limit, Bidirectional, Enable, I2C interface, Spread Spectrum, Synchronous rectification, UVLO fixed

EMI & noise features

Frequency Dithering, Spread Spectrum

Control mode

Peak current mode

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.00002

Duty cycle (max) (%)

90

Rating

Automotive

Topology

Boost

Vin (max) (V)

13

Vin (min) (V)

0.5

Vout (max) (V)

12

Vout (min) (V)

5

Switch current limit (typ) (A)

20

Features

Adjustable current limit, Bidirectional, Enable, I2C interface, Spread Spectrum, Synchronous rectification, UVLO fixed

EMI & noise features

Frequency Dithering, Spread Spectrum

Control mode

Peak current mode

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.00002

Duty cycle (max) (%)

90

WQFN-FCRLF (RAV)

24

12 mm² (4 mm × 3 mm)

AEC-Q100 qualified for automotive applications
- Device temperature grade 1: –40°C to 125°C ambient operating temperature range
Functional Safety-Capable
- Documentation available to aid functional safety system design
I2C programmable 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 1-5 cell NiMH, 1-2 cell Li-Ion, LiFePO4, 1-4 cell super capacitor
- Programmable charging current 50mA and 100mA
- Wide battery voltage operating range 0V to 12V
- Programmable charging timer up to 32h
- NTC thermistor input to monitor battery temperature
Programmable boost converter supporting 12V car battery back-up 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 12V
  - Minimum 3V for start up
  - Can start up at 1V when Vout>5V
- <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
Functional Safety-Capable
- Documentation available to aid functional safety system design
I2C programmable 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 1-5 cell NiMH, 1-2 cell Li-Ion, LiFePO4, 1-4 cell super capacitor
- Programmable charging current 50mA and 100mA
- Wide battery voltage operating range 0V to 12V
- Programmable charging timer up to 32h
- NTC thermistor input to monitor battery temperature
Programmable boost converter supporting 12V car battery back-up 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 12V
  - Minimum 3V for start up
  - Can start up at 1V when Vout>5V
- <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

The TPS61381-Q1 is 400kHz, 40V, 15A automotive bi-directional boost converter/ LDO charger with battery state of health detection function designed for back-up power systems like TBOX or e-call. The converter supports absmax voltage up to 40V on VOUT pin to withstand load-dump condition and supports direct connection with 12V car battery.

The TPS61381-Q1 integrates I2C configurable LDO charger supporting NiMH, Li-Ion, LiFePO4, super capacitor.

TPS61381-Q1 integrates boost function that operates over 0.5V to 12V 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 TPS61381-Q1 integrates battery health detection feature which discharge the battery with a constant current and detects the voltage drop across the battery internal resistance.

The TPS61381-Q1 is available in a 3mm × 4mm QFN package with wettable flank. Care must be taken when designing the PCB with TPS61381-Q1, view for details.

The TPS61381-Q1 is 400kHz, 40V, 15A automotive bi-directional boost converter/ LDO charger with battery state of health detection function designed for back-up power systems like TBOX or e-call. The converter supports absmax voltage up to 40V on VOUT pin to withstand load-dump condition and supports direct connection with 12V car battery.

The TPS61381-Q1 integrates I2C configurable LDO charger supporting NiMH, Li-Ion, LiFePO4, super capacitor.

TPS61381-Q1 integrates boost function that operates over 0.5V to 12V 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 TPS61381-Q1 integrates battery health detection feature which discharge the battery with a constant current and detects the voltage drop across the battery internal resistance.

The TPS61381-Q1 is available in a 3mm × 4mm QFN package with wettable flank. Care must be taken when designing the PCB with TPS61381-Q1, view for details.

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Documentación técnica

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Documentación principal	Tipo	Título	Opciones de formato	Fecha
*	Hoja de datos	TPS61381-Q1 Automotive 400kHz, 40V, 15A Boost Converter with LDO Charger and Battery State of Health Detection datasheet (Rev. A)	PDF \| HTML	9/03/2026
	Nota sobre la aplicación	Supercapacitor Backup Power Supply for Dying Gasp Application	PDF \| HTML	10/04/2026
	Información sobre seguridad funcional	TPS61381-Q1, TPS61382-Q1, TPS61383-Q1, and TPS61382A-Q1 Functional Safety FIT Rate, FMD and Pin FMA	PDF \| HTML	8/12/2025
	Nota sobre la aplicación	TPS61381-Q1 Schematic and Layout Guideline	PDF \| HTML	1/12/2025

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

TPS61381QEVM-126 — Módulo de evaluación TPS61381-Q1

El TPS61381QEVM-126 funciona en un amplio rango de tensión de la batería de reserva de 0 V a 12 V y un rango de tensión de la batería principal (puerto VBAT) de 0 V a 40 V para lograr un funcionamiento bidireccional. El módulo de evaluación (EVM) admite una salida de hasta 7.5 A de carga a 3.6 V (...)

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