4.5V to 14V Input, 25A Synchronous Step-Down SWIFT™ Converter - TPS56221

TPS56221 (ACTIVE)

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

Recommended alternative parts

  • LMZ31520  -  Looking for a power module? Try the LMZ31520
  • LMZ31530  -  Looking for a power module? Try the LMZ31530

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.

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

View more

Parametrics Compare all products in Buck Converter (Integrated Switch)

 
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Iout (Max) (A)
Regulated Outputs (#)
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Performance Features
Control Mode
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Rating
Package Group
Approx. Price (US$)
TPS56221 TPS53353 TPS53355 TPS548D22 TPS56121
4.5     1.5     1.5     1.5     4.5    
14     15     15     16     14    
0.6     0.6     0.6     0.6     0.6    
12     5.5     5.5     5.5     12    
25     20     30     40     15    
1     1     1     1     1    
300     250     250     425     300    
1000     1000     1000     1050     1000    
2.5     0.32     0.32     2     2.5    
Enable
Light Load Efficiency Mode
Synchronous Rectification
Pre-Bias Start-Up    
Adjustable Current Limit
Enable
Light Load Efficiency Mode
Power Good
Synchronous Rectification
Pre-Bias Start-Up    
Adjustable Current Limit
Enable
Light Load Efficiency Mode
Power Good
Synchronous Rectification
Pre-Bias Start-Up    
Adjustable Current Limit
Enable
Light Load Efficiency Mode
Output Discharge
Power Good
Pre-Bias Start-Up
Remote Sense
Synchronous Rectification
UVLO Adjustable    
Adjustable Current Limit
Enable
Power Good
Synchronous Rectification
Pre-Bias Start-Up    
Voltage Mode     D-CAP     D-CAP     D-CAP3     Voltage Mode    
93     90     90       93    
-40 to 125     -40 to 85     -40 to 85     -40 to 125     -40 to 125    
Catalog     Catalog     Catalog     Catalog     Catalog    
LSON-CLIP     LSON-CLIP     LSON-CLIP     LQFN-CLIP     LSON-CLIP    
3.75 | 1ku     3.50 | 1ku     3.75 | 1ku     4.19 | 1ku     3.50 | 1ku    
New! Interactive Design
Click to instantly view a schematic, charts, Bill of Materials, and Operating Values.

WEBENCH® Designer TPS56221

  Min   Max Range
Vin  V 4.5 to 14.0V
Vout  V 0.6 to 12.0V
Iout  A ≤ 25A
Ambient Temp  °C -40 to 125°C


Footprint BOM Cost Efficiency


Preview design