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™

High-Efficiency 20-A SWIFT™ Synchronous Buck Converter with Eco-mode™ - TPS53353
 

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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 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)
Features
Control Mode
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Rating
Package Group
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     16     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     650     500    
0.32     0.1     0.32     0.32     0.32     3     4.3     7.7     2     2