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TPS61388-Q1

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36VIN, 30VOUT, low-IQ, 7.5A ISW fully integrated synchronous boost converter with pass-through mode

Product details

Rating Automotive Topology Boost Vin (max) (V) 36 Vin (min) (V) 2 Vout (max) (V) 30 Vout (min) (V) 4.5 Switch current limit (typ) (A) 7.5 Features Enable, External Sync, Frequency synchronization, Light-load efficiency, Pass-through mode, Power good, 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) 0.00003 Duty cycle (max) (%) 90 TI functional safety category Functional Safety-Capable
Rating Automotive Topology Boost Vin (max) (V) 36 Vin (min) (V) 2 Vout (max) (V) 30 Vout (min) (V) 4.5 Switch current limit (typ) (A) 7.5 Features Enable, External Sync, Frequency synchronization, Light-load efficiency, Pass-through mode, Power good, 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) 0.00003 Duty cycle (max) (%) 90 TI functional safety category Functional Safety-Capable
WQFN-HR (VAS) 16 7.5 mm² 3 x 2.5
  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40°C to 125°C ambient operating temperature range
  • Wide input voltage and output operation range
    • Input voltage range: 2V to 36V
    • 2.4V minimum for startup
    • Boost mode output voltage range : 5V to 30V
    • Pass-through mode output voltage up to 36V
    • Fixed output options: 10V, 8.5V, and 6.5V
  • Pass-through operation when VIN>VOUT_SET
    • Typical 65µA quiescent current in Pass-through
    • Constant frequency when entering and exiting pass-through (TPS61388-Q1)
    • Frequency foldback when entering and exiting pass-through (TPS613881-Q1)
  • Avoid AM band interference and crosstalk
    • Optional switching 400kHz or 2.2MHz by FSW pin
    • Optional clock synchronization
    • Spread spectrum frequency modulation
  • High efficiency and power capability
    • Peak current limit: 8A
    • Low-side FET: 30mΩ, high-side FET: 25mΩ
  • Minimized light load current consumption
    • Typical 30µA quiescent current into VIN pin
    • Typical 2µA quiescent current into VOUT pin
    • Maximum 1.25µA shutdown current into VIN pin
    • Selectable forced PWM mode, auto PFM mode
  • Lead-less HotRod™ Lite package
  • Integrated protection features
    • Cycle-by-cycle peak current limit
    • Output overvoltage protection
    • Power good indicator
    • Thermal shutdown protection at 170°C
  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40°C to 125°C ambient operating temperature range
  • Wide input voltage and output operation range
    • Input voltage range: 2V to 36V
    • 2.4V minimum for startup
    • Boost mode output voltage range : 5V to 30V
    • Pass-through mode output voltage up to 36V
    • Fixed output options: 10V, 8.5V, and 6.5V
  • Pass-through operation when VIN>VOUT_SET
    • Typical 65µA quiescent current in Pass-through
    • Constant frequency when entering and exiting pass-through (TPS61388-Q1)
    • Frequency foldback when entering and exiting pass-through (TPS613881-Q1)
  • Avoid AM band interference and crosstalk
    • Optional switching 400kHz or 2.2MHz by FSW pin
    • Optional clock synchronization
    • Spread spectrum frequency modulation
  • High efficiency and power capability
    • Peak current limit: 8A
    • Low-side FET: 30mΩ, high-side FET: 25mΩ
  • Minimized light load current consumption
    • Typical 30µA quiescent current into VIN pin
    • Typical 2µA quiescent current into VOUT pin
    • Maximum 1.25µA shutdown current into VIN pin
    • Selectable forced PWM mode, auto PFM mode
  • Lead-less HotRod™ Lite package
  • Integrated protection features
    • Cycle-by-cycle peak current limit
    • Output overvoltage protection
    • Power good indicator
    • Thermal shutdown protection at 170°C

The TPS61388-Q1 is a 36V, 8A automotive fully-integrated synchronous boost converter with pass-through feature. The converter supports absmax voltage up to 40V while the max boost output voltage covers up to 30V.

The TPS61388-Q1 employs peak current mode control scheme with frequency options of 400kHz and 2.2MHz, and is capable of synchronized to an external clock. There are two optional modes at light load through MODE/SYNC pin configuring: Auto PFM mode and Forced PWM mode to balance the efficiency and noise immunity.

The device features low shutdown current and low quiescent current Pass-through operation, eliminates the need for an external bypass switch when the supply voltage is greater than output target.

The TPS61388-Q1 has various fixed output voltage versions to save the external components. TPS61388-Q1 supports the external loop compensation so that the stability and transient response is optimized.

The device has built-in protection features like peak current limit, overvoltage protection, and thermal shutdown. External clock synchronization, spread spectrum modulation, and a lead-less package with minimal parasitic help to reduce EMI. The TPS61388-Q1 is available in a 3.0mm × 2.5mm HotRod™ Lite WQFN package with wettable flank.

The TPS61388-Q1 is a 36V, 8A automotive fully-integrated synchronous boost converter with pass-through feature. The converter supports absmax voltage up to 40V while the max boost output voltage covers up to 30V.

The TPS61388-Q1 employs peak current mode control scheme with frequency options of 400kHz and 2.2MHz, and is capable of synchronized to an external clock. There are two optional modes at light load through MODE/SYNC pin configuring: Auto PFM mode and Forced PWM mode to balance the efficiency and noise immunity.

The device features low shutdown current and low quiescent current Pass-through operation, eliminates the need for an external bypass switch when the supply voltage is greater than output target.

The TPS61388-Q1 has various fixed output voltage versions to save the external components. TPS61388-Q1 supports the external loop compensation so that the stability and transient response is optimized.

The device has built-in protection features like peak current limit, overvoltage protection, and thermal shutdown. External clock synchronization, spread spectrum modulation, and a lead-less package with minimal parasitic help to reduce EMI. The TPS61388-Q1 is available in a 3.0mm × 2.5mm HotRod™ Lite WQFN package with wettable flank.

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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet TPS61388-Q1 36-VIN ,30-VOUT, Low-IQ, 8A ISW, Fully Integrated Synchronous Boost Converter with Pass-through datasheet PDF | HTML 16 Oct 2025
Certificate TPS61388Q1EVM-093 EU Declaration of Conformity (DoC) 20 Aug 2025

Design & development

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Evaluation board

TPS61388Q1EVM-093 — TPS61388-Q1 evaluation module

The TPS61388Q1EVM helps to evaluate the behavior and performance of the TPS61388Q1 at different input voltages, output voltages, and load conditions. This EVM is designed for 9V to 16V input voltage and 30V output voltage applications. This EVM has test points of TP1 and TP2 for input voltage (...)

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WQFN-HR (VAS) 16 Ultra Librarian

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