TPS56921 Overview
The TPS56921 in thermally enhanced 20-pin HTSSOP package is a full featured 17V, 9A synchronous step down converter which is optimized for small designs through high efficiency and integrating the high-side and low-side MOSFETs. After the initial power-up, the output voltage can be changed by codes sent to the IC via an I2C patible VID Control bus. Current mode control provides space savings and easy pensation.
TPS56921 Key Features
- VID Control Range via I2C patible Interface: 0.72V to 1.48V in 10mV Steps
- I2C Addressing Flexibility: 2 Bits by IC pins
- ±1.5% Output Voltage over Temperature for VID Control
- ±1% Reference Voltage over Temperature for External Regulation Mode
- Integrated 26mΩ / 19mΩ MOSFETs
- Power Input PVIN Voltage Range: 1.6V to 17V
- Switching Frequency: 200kHz to 1.6MHz Internal Oscillator or Synchronizing to External Clock
- Shutdown Current: 2µA
- Monotonic Start-Up into Pre-biased Output Voltage
- Overcurrent Protection for Both MOSFETs with Hiccup Mode for Severe Fault Conditions