TPS40425 Dual Output, 2-Phase, Stackable PMBus™ Synchronous Buck Driverless Controller with Adaptive Voltage Scaling (AVS) Bus

1 Features

Non-Smart Power Mode in Factory Default
Pin-for-Pin Equivalent to TPS40428 – Smart Power Mode in Factory Default
Single Supply Operation: 4.5 V to 20 V
V_OUT from 0.6 V
Dual or Multi-Phase Synchronous Buck Controller
Individual High-Speed AVS Interface
(0.5-V to 1.5-V Range)
Fast Transient Response
Stackable up to Four Phases
- 2-, 3-, or 4-Phase Interleaved Phase Shifts
- Accurate Current Sharing
PMBus™ Interface Capability
- Margining Up or Down with 2-mV Step
- Programmable Fault Limit and Response
- ±0.8% V_OUT
- Accuracy Current Monitoring
- ±4.5°C External Temperature Monitoring with x3904
- Programmable UVLO ON/OFF Thresholds
- Programmable Soft-Start Time, Turn-On Delay, and Turn-Off Delay
On-Chip Non-Volatile Memory (NVM) to Store Custom Configurations
0.6-V Reference Voltage with 0.5% Accuracy from –40°C to 125°C
Inductor DCR Current Sensing
Programmable ƒ_SW from 200 kHz to 1.5 MHz
Supports Pre-biased Output
Differential Remote Sensing
Synchronization to an Extermal Clock
OC/OV/UV/OT Fault Protection
40-Pin, 6 mm × 6 mm, QFN Package
Support for TI Power Stage