Dual Output, 2-Phase, Stackable PMBus Synchronous Buck Driverless Controller
Product details
Parameters
Package | Pins | Size
Features
- Smart Power Mode in Factory Default (Compatible with TI Smart Power Stage CSD95378B and Pin-for-Pin Equivalent to TPS40425 – Non-Smart Power Mode in Factory 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-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
- Programmable ƒSW 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
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 dual-output 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.
For all available packages, see the orderable addendum at the end of the data sheet.Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | TPS40428 Dual Output, 2-Phase, Stackable PMBus Synchronous Buck Driverless Controller with Adaptive Voltage Scaling (AVS) Bus datasheet (Rev. A) | Jul. 22, 2014 |
Application note | Multiphase Buck Design from Start to Finish, Part 1 (Rev. A) | May 24, 2019 | |
Application note | SMT Guidelines for Stacked Inductor (Inductor On Top) on Voltage Regulator IC | Feb. 22, 2016 | |
Application note | MOSFET power losses and how they affect power-supply efficiency | Jan. 26, 2016 | |
Technical articles | Select the correct PMBus POL solution for your application | Aug. 03, 2015 | |
User guide | Using the PWR594 EVM Dual Output DC/DC Analog with PMBus Interface | Jul. 30, 2014 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The TPS40428EVM evaluation module (EVM) allows users to evaluate the TPS40428. The TPS40428 is a PMBus, synchronous buck, driverless controller. It can be configured for dual-output or 2-phase operation. The TPS40428EVM is designed to demonstrate the TPS40428 in a typical, dual-output (...)
Features
- Vin: 7-14Vdc.
- Vout1: 1.2Vdc / 20A, Vout2: 1.8Vdc / 20A.
- Support PMBus programming.
- Convenient test points for probing critical waveforms
Software development
Features
Some of the tasks you can perform with the GUI include:
- Turn on or off the power supply output, either through the hardware control line or the PMBus OPERATION command
- Monitor real-time data. Items such as input voltage, output voltage, output current, temperature, and warnings/faults are continuously (...)
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Reference designs
Design files
-
download PMP9042 BOM.pdf (68KB) -
download PMP9042 Assembly Drawing.pdf (41KB) -
download PMP9042 PCB.pdf (379KB) -
download PMP9042 Gerber.zip (172KB)
Design files
-
download PMP4482 Assembly Drawing.pdf (180KB) -
download PMP4482 PCB.pdf (1293KB) -
download PMP4482 CAD Files.zip (27KB) -
download PMP4482 Gerber.zip (330KB) -
download PMP4482 BOM (Rev. A).pdf (62KB)
Design files
-
download PMP11184 BOM.pdf (123KB) -
download PMP11184 PCB.pdf (905KB) -
download PMP11184 Gerber.zip (282KB)
Design files
-
download PMP9475 BOM.pdf (106KB) -
download PMP9475 CAD Files.zip (2704KB)
Design files
-
download PMP10896 BOM.pdf (195KB) -
download PMP10896 Assembly Drawing.pdf (896KB) -
download PMP10896 PCB.pdf (13168KB) -
download PMP10896 Gerber.zip (2171KB)
Design files
-
download PMP9131 BOM.pdf (112KB) -
download PMP9131 Assembly Drawing.pdf (372KB) -
download PMP9131 PCB.pdf (4623KB) -
download PMP9131 Gerber.zip (483KB)
Design files
-
download PMP10000 BOM.pdf (106KB) -
download PMP10000 Gerber.zip (256KB)
Design files
-
download PMP9444 BOM.pdf (99KB) -
download PMP9444 CAD Files.zip (2322KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
VQFN (RHA) | 40 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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