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TPS566238

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

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

TPS566238

ACTIVE
Data sheet Order now

Product details

Parameters

Vin (Min) (V) 3 Vin (Max) (V) 17 Vout (Min) (V) 0.6 Vout (Max) (V) 7 Iout (Max) (A) 6 Iq (Typ) (uA) 50 Switching frequency (Min) (kHz) 600 Switching frequency (Max) (kHz) 600 Features Enable, Forced PWM, Over Current Protection, Soft Start Adjustable Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

VQFN-HR (RQF) 9 1 mm² 2 x 1.5 open-in-new Find other Buck converters (integrated switch)

Features

  • 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

All trademarks are the property of their respective owners.

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Description

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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NEW TPS566231 ACTIVE 3-V to 18-V input, 6-A synchronous step-down voltage regulator with pulse skip mode Pin-to-pin solution that operates in high efficiency Eco-mode

Technical documentation

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Type Title Date
* Datasheet TPS56623x 3-V to 18-V Input, 6-A Synchronous Step-Down Voltage Regulator datasheet (Rev. A) Jan. 27, 2021
User guide TPS566231P/8PEVM 6-A, Regulator Evaluation Module Mar. 15, 2021
User guide TPS566238EVM 6-A, Regulator Evaluation Module (Rev. A) Jan. 13, 2021
More literature TPS566238EVM EU Declaration of Conformity (DoC) May 29, 2020
Technical article Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
49
Description
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 (...)
Features
  • 3-V to 18-V input voltage range
  • 0.6-V to 7-V output voltage range
  • Up to 6-A output current
  • Large duty operation
  • Fast transient response
  • 2-mm x 1.5-mm RQF package
View details
EVALUATION BOARD Download
document-generic User guide
49
Description
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 transient (...)
Features
  • 3-V to 18-V input voltage range
  • 0.6-V to 7-V output voltage range
  • Up to 6-A output current
  • FCCM for smaller ripple under all loading range
  • PGOOD indicator
  • 2-mm × 1.5-mm RQF package
View details

Design tools & simulation

SIMULATION MODEL Download
SLUM729.ZIP (132 KB) - PSpice Model
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SLUM774A.ZIP (128 KB) - PSpice Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
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CAD/CAE symbols

Package Pins Download
VQFN-HR (RQF) 9 View options

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