Product details

Vin (Min) (V) 4.5 Vin (Max) (V) 14 Vout (Min) (V) 0.6 Vout (Max) (V) 12 Iout (Max) (A) 25 Iq (Typ) (uA) 2500 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
Vin (Min) (V) 4.5 Vin (Max) (V) 14 Vout (Min) (V) 0.6 Vout (Max) (V) 12 Iout (Max) (A) 25 Iq (Typ) (uA) 2500 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
LSON-CLIP (DQP) 22 30 mm² 6 x 5
  • 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
  • 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

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.

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.

Evaluation board

TPS56221EVM-579 — Evaluation Module for TPS56221 High Current (25A) Synchronous Step-Down SWIFT™ Converter

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 (...)
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Simulation model

TPS56221 Unencrypted PSpice Transient Model Package (Rev. A)

SLUM140A.ZIP (100 KB) - PSpice Model
Simulation model

TPS56221 TINA-TI Start-Up Reference Design

SLUM202.TSC (694 KB) - TINA-TI Reference Design
Simulation model

TPS56221 TINA-TI Steady-State Reference Design

SLUM203.TSC (694 KB) - TINA-TI Reference Design
Simulation model

TPS56221 TINA-TI Transient Spice Model

SLUM204.ZIP (79 KB) - TINA-TI Spice Model
Simulation model

TPS56121/221 Unencrypted PSpice Average Model Package (Rev. A)

SLUM235A.ZIP (449 KB) - PSpice Model
Simulation model

TPS56121 TINA-TI Average Spice Model

SLUM281.ZIP (7 KB) - TINA-TI Spice Model
Simulation model

TPS56221 TINA-TI Average Reference Design

SLUM282.TSC (1201 KB) - TINA-TI Reference Design
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 (...)
Calculation tool

Type III Compensation Calculation Tool (Rev. E)

SLUC263E.ZIP (185 KB)
Reference designs

PMP7047 — High performance buck converter with VID interface to supply TI TMS320 TCI6634

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

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