TPS40428RHAT Part Information

Details for TPS40428RHAT by Texas Instruments

Electronic & Electrical Components > Semiconductors - ICs > Power Management

Buy TPS40428RHAT Directly from Texas Instruments (441 in stock) at $3.5420

Part Description

The TPS40428 device is a PMBus, synchronous buck, driverless controller. It operates in smart power mode with factory default settings, and it can operate in non-smart power mode after PMBus programing and power reboot. It can be configured for dualoutput or 2-phase operation. It is also stackable up to 4 phases 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 and output capacitance. The wide input voltage range can support 5-V and 12-V intermediate supply buses. The 0.5% reference voltage satisfies the need of precision voltage to the modern 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 monitor the output voltages, currents and temperatures for individual channels.

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Part Features

  • 0.6-V Reference Voltage with 0.5% Accuracy from u201340u00b0C to 125u00b0C
  • 40-Pin, 6 mm u00d7 6 mm, QFN Package
  • Differential Remote Sensing
  • Dual or Multi-Phase Synchronous Buck Controller
  • Fast Transient Response
  • Individual High-Speed AVS Interface
  • OC/OV/UV/OT Fault Protection
  • On-Chip Non-Volatile Memory (NVM) to Store Custom Configurations
  • PMBus Interface Capability u2013 Margining Up/Down with 2-mV Step u2013 Programmable Fault Limit and Response u2013 u00b10.8% VOUT u2013 Accuracy Current Monitoring u2013 u00b13u00b0C External Temperature Monitoring In Smart Power Mode u2013 Programmable UVLO ON/OFF Thresholds u2013 Programmable Soft-Start Time, Turn-On Delay, and Turn-Off Delay
  • Programmable u0192SW from 200 kHz to 1.5 MHz
  • Single Supply Operation: 4.5 V to 20 V
  • Smart Power Mode in Factory Default (Compatible with TI Smart Power Stage CSD95378B and Pin- for-Pin Equivalent to TPS40425 u2013 Non-Smart Power Mode in Factory Default)
  • Stackable up to Four Phases u2013 2-, 3-, or 4-Phase Interleaved Phase Shifts u2013 Accurate Current Sharing
  • Supports Pre-biased Output
  • Synchronization to an Extermal Clock
  • VOUT from 0.6 V

Part Specifications

Supply Voltage Min 4.5V
Supply Voltage Max 20V
No. of Outputs 2 Output, 2Outputs
Duty Cycle (%) -
Controller IC Case Style VQFN
No. of Pins 40Pins
Switching Frequency 1.5MHz
Topology Synchronous Buck (Step Down)
Operating Temperature Min -40°C
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 3 - 168 hours
SVHC No SVHC (27-Jun-2018)
RoHS Compliant

Alternative Part Descriptions

  • SYNC BUCK CONTROLLER, 1.5MHZ, VQFN-40 | Newark Electronics
  • Dual Output, 2-Phase, Stackable PMBus Synchronous Buck Driverless Controller | Texas Instruments

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