TPS56221

ACTIVE

4.5V to 14V Input, 25A Synchronous Step-Down SWIFT™ Converter

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Product details

Parameters

Vin (Min) (V) 4.5 Vin (Max) (V) 14 Vout (Min) (V) 0.6 Vout (Max) (V) 12 Iout (Max) (A) 25 Iq (Typ) (mA) 2.5 Switching frequency (Min) (kHz) 300 Switching frequency (Max) (kHz) 1000 Features Adjustable Current Limit, Enable, Power Good, Pre-Bias Start-Up, Synchronous Rectification, Forced PWM, Soft Start Adjustable, Over Current Protection, UVLO Fixed Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

LSON-CLIP (DQP) 22 30 mm² 6 x 5 open-in-new Find other Buck converters (integrated switch)

Features

  • 4.5-V to 14-V Input Voltage Range
  • Incorporates Power Block Technology
  • Up to 25-A Output Current
  • Fixed-Frequency Options of 300 kHz, 500 kHz,
    and 1 MHz
  • High-Side and Low-Side MOSFET RDS(on) Sensing
  • Programmable Soft-Start
  • 600-mV Reference Voltage With 1% Accuracy
  • Voltage Mode Control with Feed-Forward
  • Supports Prebiased Output
  • Thermal Shutdown
  • 22-Pin 5-mm × 6-mm PQFN PowerPAD™ Package
  • For SWIFT Power Products Documentation,
    see http://www.ti.com/swift
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Description

The TPS56221 device is a high-efficiency and high-current synchronous buck converter designed to operate from a supply from 4.5 V to 14 V. The device can produce an output voltage as low as 0.6 V at loads up to 25 A. Integrated NexFET™ Power MOSFETs provide a small footprint and ease of use.

The device implements a voltage-mode control with voltage feed-forward compensation that responds instantly to input voltage change.

The TPS56221 is available in a thermally enhanced 22-pin PQFN (DQP) PowerPAD package.

The device offers design flexibility with a variety of user programmable functions, including soft-start, overcurrent protection (OCP) levels, and loop compensation. OCP levels are programmed by a single external resistor connected from the ILIM pin to the circuit ground. During the initial power-on sequence, the device enters a calibration cycle, measures the voltage at the ILIM pin, and sets an internal OCP voltage level. During operation, the programmed OCP voltage level is compared to the voltage drop across the low-side FET when it is on to determine whether there is an overcurrent condition. It then enters a shutdown/restart cycle until the fault is removed.

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Technical documentation

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$49.00
Description
The Texas Instruments TPS56221EVM-579 evaluation module (EVM) helps designers evaluate the operation and performance of the TPS56221 4.5V to 14V Input, 25A High Current Synchronous Step-Down Converter. The EVM is designed to use a regulated 12V (8V to 14V) bus voltage to provide a regulated 1.0-V (...)
Features
  • 8V to 14V Input Voltage Rating
  • 1.0V ±2% Output Voltage Rating
  • 25A Steady State Load Current
  • 500kHz Switching Frequency
  • Simple Access to IC features (Power Good, Enable, Soft-Start, Error Amplifier)

Design tools & simulation

SIMULATION MODELS Download
SLUM140A.ZIP (100 KB) - PSpice Model
SIMULATION MODELS Download
SLUM202.TSC (694 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SLUM203.TSC (694 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SLUM204.ZIP (79 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SLUM235A.ZIP (449 KB) - PSpice Model
SIMULATION MODELS Download
SLUM281.ZIP (7 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SLUM282.TSC (1201 KB) - TINA-TI Reference Design
CALCULATION TOOLS Download
SLUC263D.ZIP (131 KB)

Reference designs

REFERENCE DESIGNS Download
High performance buck converter with VID interface to supply TI TMS320 TCI6634
PMP7047 The PMP7047 reference design uses the TPS56221 25A buck converter with the LM10010 6-bit VID interface chip to enable Adaptive Voltage Scaling (AVS) and tight voltage regulation of the TMS320 TCI6634 DSP core rail. At 300KHz switching frequency it  is optimized for high efficiency and low power (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
15A Non-Isolated DC/DC Converter
PMP4316 — This reference design is 15A high density non-isolated DC/DC converter for telecom applications.
Design files

CAD/CAE symbols

Package Pins Download
LSON-CLIP (DQP) 22 View options

Ordering & quality

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