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TPS61383-Q1

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Automotive, 400kHz, 36V, 30A boost converter with buck, LDO charger and battery health detection

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Data sheet

TPS61383-Q1

ACTIVE
Data sheet Order now

Product details

Rating Automotive Topology Buck/Boost Vin (max) (V) 12 Vin (min) (V) 0.5 Vout (max) (V) 12 Vout (min) (V) 5 Switch current limit (typ) (A) 30 Features Adjustable current limit, Bidirectional, Enable, I2C interface, Spread Spectrum, Synchronous rectification EMI 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 Buck/Boost Vin (max) (V) 12 Vin (min) (V) 0.5 Vout (max) (V) 12 Vout (min) (V) 5 Switch current limit (typ) (A) 30 Features Adjustable current limit, Bidirectional, Enable, I2C interface, Spread Spectrum, Synchronous rectification EMI 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 x 3
  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40°C to 125°C ambient operating temperature range
  • Functional Safety-Capable
  • I2C programmable buck/LDO charger
    • Supports charger input voltage (VOUT pin) up to 20V, 40V absolute maximum to withstand load dump
    • Wide battery voltage operating range: 0V to 12V
    • 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 up to 5A
    • Charge 25F super capacitor from 0V to 8.1V within 20s, fast charge for e-latch application
    • Programmable NiMH charging timer up to 32h
    • NTC input to monitor battery temperature
  • Programmable boost converter supporting 12V car battery backup power system
    • Programmable output voltage range: 5V to 12V
    • Programmable average current limit: 5A to 30A
    • backup battery (BUB) voltage in boost mode: 0.5V to 12V
      • Minimum 3V for start-up when Vout < 2.8V
      • 1V 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
    • 21µA 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
  • I2C programmable buck/LDO charger
    • Supports charger input voltage (VOUT pin) up to 20V, 40V absolute maximum to withstand load dump
    • Wide battery voltage operating range: 0V to 12V
    • 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 up to 5A
    • Charge 25F super capacitor from 0V to 8.1V within 20s, fast charge for e-latch application
    • Programmable NiMH charging timer up to 32h
    • NTC input to monitor battery temperature
  • Programmable boost converter supporting 12V car battery backup power system
    • Programmable output voltage range: 5V to 12V
    • Programmable average current limit: 5A to 30A
    • backup battery (BUB) voltage in boost mode: 0.5V to 12V
      • Minimum 3V for start-up when Vout < 2.8V
      • 1V 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
    • 21µA 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 TPS61383-Q1 is a 400kHz, 40V, 30A automotive bi-directional boost converter, buck charger with battery state of health detection function designed for backup power systems like TBOX or eCall. The converter supports absolute maximum voltage up to 40V on the VOUT pin to withstand load-dump condition and supports direct connection with 12V car battery. The TPS61383-Q1 integrates I2C configurable buck/LDO charger supporting NiMH, Li-Ion, LiFePO4, super capacitor.

TPS61383-Q1 integrates boost function that operates over 0.5V to 12V BUB voltage and 5V – 12V output voltage. The device applies fix frequency peak current control scheme with optional spread spectrum to minimize EMI. The boost function supports 5A – 30A programmable average current limit.

The TPS61383-Q1 integrates battery health detection feature, which discharges the battery with a constant current and detects the voltage drop across the battery internal resistance.

The TPS61383-Q1 is available in a 3mm × 4mm QFN package with wettable flank. Care must be taken when designing the PCB with TPS61383-Q1. See also Layout Example.

The TPS61383-Q1 is a 400kHz, 40V, 30A automotive bi-directional boost converter, buck charger with battery state of health detection function designed for backup power systems like TBOX or eCall. The converter supports absolute maximum voltage up to 40V on the VOUT pin to withstand load-dump condition and supports direct connection with 12V car battery. The TPS61383-Q1 integrates I2C configurable buck/LDO charger supporting NiMH, Li-Ion, LiFePO4, super capacitor.

TPS61383-Q1 integrates boost function that operates over 0.5V to 12V BUB voltage and 5V – 12V output voltage. The device applies fix frequency peak current control scheme with optional spread spectrum to minimize EMI. The boost function supports 5A – 30A programmable average current limit.

The TPS61383-Q1 integrates battery health detection feature, which discharges the battery with a constant current and detects the voltage drop across the battery internal resistance.

The TPS61383-Q1 is available in a 3mm × 4mm QFN package with wettable flank. Care must be taken when designing the PCB with TPS61383-Q1. See also Layout Example.
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Technical documentation

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* Data sheet TPS61383-Q1 Automotive 400kHz, 40V, 30A Boost Converter With Buck/LDO Charger and Battery State of Health Detection datasheet PDF | HTML 16 Jun 2026
EVM User's guide TPS61383-Q1 Evaluation Module PDF | HTML 15 Jun 2026

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPS61383QEVM-167 — TPS61383-Q1 evaluation module

The TPS61383QEVM-167 operates over a wide backup battery voltage range from 0V to 12V and main battery (VBAT port) voltage range from 0V to 40V to achieve a bi-directional operation. The EVM supports an output up to 7.5A load at 6V BUB and 12V output in boost mode, and supports from 50mA to 5A (...)

User guide: PDF | HTML
Not available on TI.com
Calculation tool

TPS61383Q-SCAP-CALC — TPS61383-Q1 Super Capacitor Energy Calculation Tool.

TPS61383-Q1 Super Capacitor Energy Calculation Tool. This standalone tool assists the power supply engineer with the design of a super capacitor e-latch / CPM system using DC-DC converter
Supported products & hardware

Supported products & hardware
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Certification

TPS61383QEVM-167-DOC-CERT — [TPS61383QEVM-167] EU Declaration of Conformity (DoC)

[TPS61383QEVM-167] EU Declaration of Conformity (DoC)
Supported products & hardware

Supported products & hardware
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WQFN-FCRLF (RAV) 24 Ultra Librarian
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