TPS53355

(ACTIVE) 1.5V to 15V Input (4.5V to 25V Bias), 30A Synch Step-Down SWIFT™ Converter w/ Eco-mode™

Diagrams

Functional Diagram

Description

TPS53355 is a D-CAP mode™, 30-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 mΩ/2.0 mΩ integrated MOSFETs, accurate 1%, 0.6-V reference, and integrated boost switch. A sample of competitive features include: 1.5-V to 15-V wide conversion input voltage range, 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

  • 96% Maximum Efficiency
  • Conversion Input Voltage Range: 1.5 V to 15 V
  • VDD Input Voltage Range: 4.5 V to 25 V
  • Output Voltage Range: 0.6 V to 5.5 V
  • 5-V LDO Output
  • Supports Single Rail Input
  • Integrated Power MOSFETs with 30-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 Startup 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
  • Green (RoHS Compatible), is Optional

Parametrics

Vin (Min) (V) 1.5    
Vin (Max) (V) 15    
Vout (Min) (V) 0.6    
Vout (Max) (V) 5.5    
Iout (Max) (A) 30    
Regulated Outputs (#) 1    
Switching Frequency (Min) (kHz) 250    
Switching Frequency (Max) (kHz) 1000    
Iq (Typ) (mA) 0.32    
Features Adjustable Current Limit^Enable^Light Load Efficiency^Power Good^Pre-Bias Start-Up^Synchronous Rectification    
Control Mode D-CAP    
Duty Cycle (Max) (%) 90    
Operating Temperature Range (C) -40 to 85    
Rating Catalog    
Package Group LSON-CLIP    

Companion Products

Technical Documents

Datasheet (1)

Application notes (5)

User guides (1)

Selection guides (7)

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