TPS51221 Description
The TPS51221 is a dual synchronous buck regulator controller with 2 LDOs. It is optimized for 5-V/3.3-V system controller, enabling designers to cost effectively plete 2-cell to 4-cell notebook system power supply. The TPS51221 supports high efficiency, fast transient response and 99% duty cycle operation.
TPS51221 Key Features
- 2 Input Voltage Range: 4.5 V to 28 V
- Output Voltage Range: 1 V to 12 V
- Selectable Light Load Operation (Continuous /
- Programmable Droop pensation
- Voltage Servo Adjustable Soft Start
- 200 kHz to 1 MHz Fixed Frequency PWM
- Current Mode Architecture
- 180° Phase Shift Between Channels
- Resistor or Inductor DCR Current Sensing
- Powergood Output for each channel