TPS51220RHBRG4

Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller 32-VQFN -40℃ to 85℃

DESCRIPON

The TPS51220 is a dual synchronous buck regulator controller with 2 LDOs. It is optimized for 5V/3.3V system controller, enabling designers to cost effectively complete 2-cells to 4-cells notebook system power supply. The TPS51220 supports high efficiency, fast transient response and 99% duty cycle operation. It supports supply input voltages ranging from 4.5V to 28V, and output voltages from 1V to 12V. 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: 4.5V to 28V

• Output Voltage Range: 1V to 12V

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

• Programmable Droop Compensation

• Voltage Servo Adjustable Soft Start

• 200kHz to 1MHz Fixed Frequency PWM

• Selectable Current/D-CAP™ Mode Architecture

• 180° Phase Shift Between Channels

• Resistor or Inductor DCR Current Sensing

• 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

• QFN32 RHB

APPLICATIONS

• Notebook Computer System and I/O Bus

• Point of Load in LCD TV, MFP