The TPS40428RHAT device is a PMBus, synchronous buck, driverless controller. Itoperates in smart power mode with factory default settings, and it can operatein non-smart power mode after PMBus programing and power reboot. It can beconfigured for dual-output or 2-phase operation. It is also stackable up to 4phases to support load current as high as 120 A. Interleaved phase shift for 2-.3-, or 4-phases reduce the input and output ripples therefore reducing input andoutput capacitance.
The wide input voltage range can support 5-V and 12-V intermediate supplybuses. The 0.5% reference voltage satisfies the need of precision voltage to themodern ASICs.
Using the PMBus standard, the TPS40428RHAT device can program reference voltage,fault limit, UVLO threshold, soft-start time and turn-on and turn-off delay.
In addition, the device implements an accurate measurement system to monitorthe output voltages, currents and temperatures for individual channels.
Forall available packages, see the orderable addendum at the end of the data sheet.
Feature
- Smart Power Mode in Factory Default (Compatible with TI Smart Power StageCSD95378B and Pin-for-Pin Equivalent to TPS40425 – Non-Smart Power Mode inFactory Default)
- Single Supply Operation: 4.5 V to 20 V
- VOUT from 0.6 V
- Dual or Multi-Phase Synchronous Buck Controller
- Individual High-Speed AVS Interface
- Fast Transient Response
- Stackable up to Four Phases
- 2-, 3-, or 4-Phase Interleaved Phase Shifts
- Accurate Current Sharing
- PMBus Interface Capability
- Margining Up/Down with 2-mV Step
- Programmable Fault Limit and Response
- ±0.8% VOUT
- Accuracy Current Monitoring
- ±3°C External Temperature Monitoring In Smart Power Mode
- Programmable UVLO ON/OFF Thresholds
- Programmable Soft-Start Time, Turn-On Delay, and Turn-OffDelay
- 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
- Programmable ?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
The TPS40428 device is a PMBus, synchronous buck, driverless controller. Itoperates in smart power mode with factory default settings, and it can operatein non-smart power mode after PMBus programing and power reboot. It can beconfigured for dual-output or 2-phase operation. It is also stackable up to 4phases to support load current as high as 120 A. Interleaved phase shift for 2-.3-, or 4-phases reduce the input and output ripples therefore reducing input andoutput capacitance.
The wide input voltage range can support 5-V and 12-V intermediate supplybuses. The 0.5% reference voltage satisfies the need of precision voltage to themodern ASICs.
Using the PMBus standard, the TPS40428 device can program reference voltage,fault limit, UVLO threshold, soft-start time and turn-on and turn-off delay.
In addition, the device implements an accurate measurement system to monitorthe output voltages, currents and temperatures for individual channels.
Forall available packages, see the orderable addendum at the end of the data sheet.
