TPS53353 High-Efficiency 20-A SWIFT™ Synchronous Buck Converter with Eco-mode™ | TI.com

TPS53353 (ACTIVE)

High-Efficiency 20-A SWIFT™ Synchronous Buck Converter with Eco-mode™

 

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Special Note

A pin-to-pin match with TPS53319 and TPS53355.

Description

TPS53353 is a D-CAP™ mode, 20-A synchronous switcher with integrated MOSFETs. It is designed for ease of use, low external component count, and space-conscious power systems.

This device features 5.5-mΩ / 2.2-mΩ integrated MOSFETs, accurate 1%, 0.6-V reference, and integrated boost switch. A sample of competitive features include: a conversion input voltage range from 1.5 V to 15 V, very low external component count, D-CAP™ mode control for super fast transient, auto-skip mode operation, internal soft-start control, selectable frequency, and no need for compensation.

The conversion input voltage ranges from 1.5 V to 15 V, the supply voltage range is from 4.5 V to 25 V, and the output voltage range is from 0.6 V to 5.5 V.

The device is available in 5-mm × 6-mm, 22-pin QFN package and is specified from –40°C to 85°C.

Features

  • Conversion Input Voltage Range: 1.5 V to 15 V
  • VDD Input Voltage Range: 4.5 V to 25 V
  • 92% Efficiency From 12 V to 1.5 V at 20 A
  • Output Voltage Range: 0.6 V to 5.5 V
  • 5-V LDO Output
  • Supports Single-Rail Input
  • Integrated Power MOSFETs With 20 A of
    Continuous Output Current
  • Auto-Skip Eco-mode™ for Light-Load Efficiency
  • < 10-µA Shutdown Current
  • D-CAP™ Mode With Fast Transient Response
  • Selectable Switching Frequency From 250 kHz to
    1 MHz With External Resistor
  • Selectable Auto-Skip or PWM-Only Operation
  • Built-in 1% 0.6-V Reference.
  • 0.7-ms, 1.4-ms, 2.8-ms and 5.6-ms Selectable
    Internal Voltage Servo Soft-Start
  • Integrated Boost Switch
  • Precharged Start-up Capability
  • Adjustable Overcurrent Limit With Thermal
    Compensation
  • Overvoltage, Undervoltage, UVLO and
    Overtemperature Protection
  • Supports All Ceramic Output Capacitors
  • Open-Drain Power-Good Indication
  • Incorporates NexFET™ Power Block Technology
  • 22-Pin QFN Package With PowerPAD™
  • For SWIFT™ Power Products Documentation,
    see http://www.ti.com/swift

View more

Parametrics Compare all products in Buck converters (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)
Features
Control mode
Duty cycle (Max) (%)
Operating temperature range (C)
Rating
Package Group
Type
Package size: mm2:W x L (PKG)
TPS53353 TPS51362 TPS53318 TPS53319 TPS53355 TPS543B20 TPS543C20 TPS544C25 TPS548B22 TPS548D22 TPS56121 TPS56221 TPS56520 TPS566250 TPS56628 TPS56720
1.5     3     1.5     1.5     1.5     4     4     4.5     1.5     1.5     4.5     4.5     4.5     4.5     4.5     4.5    
15     22     22     22     15     19     14     18     18     16     14     14     17     17     18     17    
0.6     0.6     0.6     0.6     0.6     0.6     0.6     0.5     0.6     0.6     0.6     0.6     0.6     0.6     0.76     0.6    
5.5     2     5.5     5.5     5.5     5.5     5.5     5     5.5     5.5     12     12     1.87     1.87     5.5     1.87    
20     10     8     14     30     25     40     30     25     40     15     25     5     6     6     7    
1     1     1     1     1     1     1     1     1     1     1     1     1     1     1     1    
250     800     250     250     250     300     300     200     425     425     300     300     500     500     650     500    
1000     800     1000     1000     1000     2000     2000     1000     1050     1050     1000     1000     500     500