TPS53353DQPR Power Regulator IC Switching Voltage Regulators HI-EFF 20A SYNC BUCK CONVERTER

1 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-modeTM for Light-Load Efficiency

• < 10-μA Shutdown Current

• D-CAPTM 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 NexFETTM Power Block Technology

• 22-Pin QFN Package With PowerPADTM

• For SWIFTTM Power Products Documentation, see http://www.ti.com/swift

2 Applications

• Server/Storage
• Workstations and Desktops
• Telecommunications Infrastructure

3 Description

TPS53353 is a D-CAPTM 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-CAPTM 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.

Device Information