Texas Instruments TPS51020DBT Multi-function Dualsynchronous Step-down Controller
Description:
The TPS51020 is a multi-function dualsynchronous step-down controller for notebook
system power. The part is specifically designed for high performance, high efficiency applications where the loss associated with a current sense resistor is unacceptable. The TPS51020 utilizes feed forward voltage mode control to attain high efficiency without sacrificing line response.
Efficiency at light load conditions can be maintained high as well by incorporating autoskip operation. A selectable, Suspend to RAM (STR) supported, DDR option provides a one chip solution for all switching applications from 5-V/3.3-V supply to a complete DDR termination solution.
Features:
- Wide Input Voltage Range: 4.5-V to 28-V
- Selectable Dual and DDR Modes
- Selectable Fixed Frequency Voltage Mode
- Integrated Selectable Output Discharge
- Advanced Power Good Logic Monitors both Channels
- Selectable Autoskip Mode
- Integrated Boot Strap Diodes
- 180°Phase Shift Between Channels
- Integrated 5-V, 60-mA Regulator
- Input Feedforward Control
- 1% Internal 0.85-V Reference
- RDS(on) Overcurrent Detection (4200 ppm/°C)
- Integrated OVP, UVP and Power Good Timers
- 30-pin TSSOP Package
Applications:
- Notebook Computers System Bus and I/O
- DDR I or DDR II Termination
