1 Features
1• 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)
• Cycle-by-Cycle Overcurrent Limiting Control
• Thermal Shutdown (TSD)
• Undervoltage Lockout (UVLO)
• TSSOP Package (PWP) with PowerPAD™

2 Applications
• Media Processors for Consumer Applications:
Digital TVs, Set Top Boxes (STB, DVD/Blu-ray
Player, Cable/Satellite Modem)
• SoC Processors
• High Density Power Distribution Systems

3 Description
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.