The TPS56X20 is a synchronous DC-DC converter IC (integrated circuit) with a voltagescaling control to power up micro-processors (MCUs) requiring core voltage(VCORE) tune-ups. After the initial power-up, the output voltage can beprogrammed/scaled by VID codes sent over an I2C compatible bus.
This step-down (buck) converter employs an adaptive on-time D-CAP2 mode control whichprovides a very fast transient response with no external components. Unlike traditionalvoltage-/current-mode controls, the D-CAP2 supports seamless transition between PWM mode for higherload and Eco-mode for light load. Eco-mode maintains highefficiency in light-load.
The TPS56X20 supports both ultra-low ESR ceramic capacitors and low equivalent seriesresistance (ESR) output capacitors, such as POSCAP or SP-CAP. The device is optimized for a small1.0μH to 2.2μH inductor saving PCB area.
The TPS56X20 devices are available in the HTSSOP package.
Feature
- D-CAP2 Control
- 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 - Adjustable Soft-start,
Monotonic Pre-Biased Start-up - Power-good
- I2C Address Programming (2bits)
- Start-up by Using External Resistors
- Cycle-by-Cycle Overcurrent Limiting Control
- Thermal Shutdown (TSD)
- Undervoltage Lockout (UVLO)
- TSSOP Package (PWP) with PowerPAD
