TPS51220ARSNR Datasheet PDF - TI

●DESCRIPTION

●The TPS51220A is a dual synchronous buck regulator controller with two LDOs. It is optimized for 5-V/3.3-V system controller, enabling designers to cost effectively complete 2-cell to 4-cell notebook system power supply. The TPS51220A supports high efficiency, fast transient response, and 99% duty cycle operation. It supports supply input voltage ranging from 4.5 V to 32 V, and output voltages from 1 V to 12 V. Two types of control schemes can be chosen depending on the application. Peak current mode supports stability operation with lower ESR capacitor and output accuracy.

●FEATURES

●• Input Voltage Range: 4.5 V to 32 V

●• Output Voltage Range: 1 V to 12 V

●• Selectable Light Load Operation(Continuous / Auto Skip / Out-Of-Audio™ Skip)

●• Programmable Droop Compensation

●• Voltage Servo Adjustable Soft Start

●• 200-kHz to 1-MHz Fixed-Frequency PWM

●• Selectable Current/D-CAP™ Mode Architecture

●• 180° Phase Shift Between Channels

●• Resistor or Inductor DCR Current Sensing

●• Adaptive Zero Crossing Circuit

●• Powergood Output for Each Channel

●• OCL/OVP/UVP/UVLO Protections (OVP Disable Option)

●• Thermal Shutdown (Non-Latch)

●• Output Discharge Function (Disable Option)

●• Integrated Boot Strap MOSFET Switch

●• QFN-32 (RTV) Package

●APPLICATIONS

●• Notebook Computer System and I/O Bus

●• Point of Load in LCD TV, MFP