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TPS566238

ACTIVE

3-V to 18-V input, 6-A synchronous step-down regulator with forced continuous conduction mode

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Data sheet

TPS566238

ACTIVE
Data sheet Order now

Product details

Vin (min) (V) 3 Vin (max) (V) 18 Vout (min) (V) 0.6 Vout (max) (V) 7 Iout (max) (A) 6 Iq (typ) (mA) 0.05 Switching frequency (min) (kHz) 600 Switching frequency (max) (kHz) 600 Features Enable, Forced PWM, Over Current Protection, Power good, Soft Start Adjustable, Synchronous Rectification Operating temperature range (°C) -40 to 125 Rating Catalog Regulated outputs (#) 1 Control mode D-CAP3 Duty cycle (max) (%) 98 Type Converter
Vin (min) (V) 3 Vin (max) (V) 18 Vout (min) (V) 0.6 Vout (max) (V) 7 Iout (max) (A) 6 Iq (typ) (mA) 0.05 Switching frequency (min) (kHz) 600 Switching frequency (max) (kHz) 600 Features Enable, Forced PWM, Over Current Protection, Power good, Soft Start Adjustable, Synchronous Rectification Operating temperature range (°C) -40 to 125 Rating Catalog Regulated outputs (#) 1 Control mode D-CAP3 Duty cycle (max) (%) 98 Type Converter
VQFN-HR (RQF) 9 3 mm² 2 x 1.5
  • Configured for rugged applications
    • Input voltage range: 3 V to 18 V
    • Output voltage range: 0.6 V to 7 V
    • 6-A continuous output current
    • 0.6-V ±1% reference voltage (25°C)
    • 98% maximum duty cycle
    • 600-kHz switching frequency
    • Non-latched for OC, OV, UV, and OT protections
    • Built-in output discharge function
  • Numerous pin-compatible options
    • TPS566231 and TPS566238 with SS pin for adjustable soft-start time
    • TPS566231P and TPS566238P with PG pin for power good indicator
    • TPS566231 and TPS566231P for auto-skip mode
    • TPS566238 and TPS566238P for continuous current mode
  • Small solution size and ease of use
    • Integrated power MOSFET with RDS(on) 20.8 mΩ and 10.6 mΩ
    • D-CAP3™ architecture control for fast transient response and internal compensation
    • 1.5-mm × 2.0-mm HotRod™ QFN package
    • Create a custom design with the WEBENCH® Power Designer
  • Configured for rugged applications
    • Input voltage range: 3 V to 18 V
    • Output voltage range: 0.6 V to 7 V
    • 6-A continuous output current
    • 0.6-V ±1% reference voltage (25°C)
    • 98% maximum duty cycle
    • 600-kHz switching frequency
    • Non-latched for OC, OV, UV, and OT protections
    • Built-in output discharge function
  • Numerous pin-compatible options
    • TPS566231 and TPS566238 with SS pin for adjustable soft-start time
    • TPS566231P and TPS566238P with PG pin for power good indicator
    • TPS566231 and TPS566231P for auto-skip mode
    • TPS566238 and TPS566238P for continuous current mode
  • Small solution size and ease of use
    • Integrated power MOSFET with RDS(on) 20.8 mΩ and 10.6 mΩ
    • D-CAP3™ architecture control for fast transient response and internal compensation
    • 1.5-mm × 2.0-mm HotRod™ QFN package
    • Create a custom design with the WEBENCH® Power Designer

The TPS56623x are simple, easy to use, high-efficiency, 6-A synchronous buck converters in a QFN 9-pin 1.5-mm x 2.0-mm package.

The devices operate with wider supply input voltage ranging from 3 V to 18 V. The D-CAP3™ control mode was adopted to provide a fast transient response, good line and load regulation, no requirement for external compensation, and to support low-ESR output capacitors.

The TPS566231 and TPS566231P operate in Eco-Mode™ for high efficiency during light load operation, and are designed with ULQ™ (Ultra Low Quiescent) feature, achieving 50-uA quiescent current to enable long battery life in low-power applications. The TPS566238 and TPS566238P operate in continuous current mode, which maintains lower output ripple during all load conditions.

The TPS566231 and TPS566238 soft-start time can be adjusted through the SS pin. The TPS566231P and TPS566238P indicate power good through the PG pin.

The TPS56623x can support up to 98% duty cycle operation, and integrate complete protection through OVP, OCP, UVLO, OTP, and UVP with hiccup. They are each available in a 9-pin 1.5-mm x 2.0-mm HotRod™ package and the junction temperature is specified from -40°C to 125°C.

The TPS56623x are simple, easy to use, high-efficiency, 6-A synchronous buck converters in a QFN 9-pin 1.5-mm x 2.0-mm package.

The devices operate with wider supply input voltage ranging from 3 V to 18 V. The D-CAP3™ control mode was adopted to provide a fast transient response, good line and load regulation, no requirement for external compensation, and to support low-ESR output capacitors.

The TPS566231 and TPS566231P operate in Eco-Mode™ for high efficiency during light load operation, and are designed with ULQ™ (Ultra Low Quiescent) feature, achieving 50-uA quiescent current to enable long battery life in low-power applications. The TPS566238 and TPS566238P operate in continuous current mode, which maintains lower output ripple during all load conditions.

The TPS566231 and TPS566238 soft-start time can be adjusted through the SS pin. The TPS566231P and TPS566238P indicate power good through the PG pin.

The TPS56623x can support up to 98% duty cycle operation, and integrate complete protection through OVP, OCP, UVLO, OTP, and UVP with hiccup. They are each available in a 9-pin 1.5-mm x 2.0-mm HotRod™ package and the junction temperature is specified from -40°C to 125°C.
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Technical documentation

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Type Title Date
* Data sheet TPS56623x 3-V to 18-V Input, 6-A Synchronous Step-Down Voltage Regulator datasheet (Rev. A) PDF | HTML 27 Jan 2021
Application note Stability Analysis and Design of D-CAP2 and D-CAP3 Converter – Part 2 PDF | HTML 02 Aug 2021
Technical article Which pinout is best? How individual, multifunctional and trimmed pinouts help address design challenges 28 Jun 2021
EVM User's guide TPS566238 Buck Converter Evaluation Module User's Guide (Rev. B) PDF | HTML 25 Jun 2021
Application note Stability Analysis and Design of D-CAP2 and D-CAP3 Converter – Part 1 PDF | HTML 09 Jun 2021
EVM User's guide TPS566231P and TPS566238P Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 28 Apr 2021
Certificate TPS566238EVM EU Declaration of Conformity (DoC) 29 May 2020
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019

Design & development

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

Evaluation board

TPS566238EVM — 3-V to 18-V VIN, 6-A synchronous step-down converter evaluation module

The TPS566238EVM evaluation module (EVM) is used to evaluate the TPS566238 device. The TPS566238 is a cost effective, high-voltage input, synchronous buck converter with integrated FETs. The TPS566238 operates with wider supply input voltage ranging from 3 V to 18 V. It uses DCAP3™ control (...)
User guide: PDF | HTML
Not available on TI.com
Evaluation board

TPS566238PEVM — TPS566238P 6-A synchronous step-down converter with PGOOD evaluation module

The TPS566238PEVM evaluation module (EVM) is used to evaluate the TPS566238P device, a high-voltage input, synchronous buck converter with integrated FETs. The TPS566238P operates with wider supply input voltage ranging from 3 V to 18 V. It uses DCAP3™ control mode to provide a fast (...)
User guide: PDF | HTML
Not available on TI.com
Simulation model

TPS566231 PSpice Transient Model (Rev. A)

SLUM730A.ZIP (120 KB) - PSpice Model
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Simulation model

TPS566238 PSpice Transient Model (Rev. A)

SLUM729A.ZIP (133 KB) - PSpice Model
Download
Simulation model

TPS566238P PSpice Transient Model (Rev. A)

SLUM774A.ZIP (128 KB) - PSpice Model
Download
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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