The TPS56X20 is a synchronous DC-DC converter IC (integrated circuit) with a voltage scaling control to power up micro-processors (MCUs) requiring core voltage (VCORE) tune-ups. After the initial power-up, the output voltage can be programmed/scaled by VID codes sent over an I2C compatible bus.
This step-down (buck) converter employs an adaptive on-time D-CAP2 mode control which provides a very fast transient response with no external components. Unlike traditional voltage-/current-mode controls, the D-CAP2 supports seamless transition between PWM mode for higher load and Eco-mode for light load. Eco-mode maintains high efficiency in light-load.
The TPS56X20 supports both ultra-low ESR ceramic capacitors and low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP. The device is optimized for a small 1.0µH to 2.2µH inductor saving PCB area.
The TPS56X20 devices are available in the HTSSOP package.
Input Voltage Range: 4.5V to 17V
Switching Frequency: 500kHz
Optimized for a 1.0µH to 2.2µH Inductor
±1% Output Voltage Accuracy
Features via I2C Compatible Interface
Output Voltage (VID): 0.6V to 1.87V in 10mV
Auto-Skip Eco-mode™ ON/OFF (Light-load)
Current Limit Target: 40% to 160%
Enabling IC, Reading-back Power-good
Hiccup Mode Protection ON/OFF
IC Terminal Features
Start-up by Using External Resistors Output Voltage with VFB Pin: 0.6V to 1.87V