2.95-V to 16-V, stackable 40-A synchronous SWIFT™ buck converter with pin-strapping and PMBus
Product details
Parameters
Package | Pins | Size
Features
- Split rail support: 2.95-V to 16-V PVIN; 2.95-V to 18-V AVIN (4-VIN VDD5 for switching)
- Integrated 4.5-mΩ/0.9-mΩ MOSFETs
- Average current mode control with selectable internal compensation
- 2×, 3×, 4× stackable with current sharing up to 160 A, supporting a single address per output
- Selectable 0.5-V to 5.5-V output via pin strap or 0.25-V to 5.5-V using PMBus VOUT_COMMAND
- Extensive PMBus command set with telemetry for VOUT, IOUT and internal die temperature
- Differential remote sensing with internal FB divider for < 1% VOUT error –40°C to +150°C TJ
- AVS and margining capabilities through PMBus
- MSEL pins pin programming PMBus defaults
- 12 Selectable switching frequencies from 225 kHz to 1.5 MHz (8 pin-strap options)
- Frequency sync in/sync out
- Supports prebiased output
- Supports strongly coupled inductor
- 7-mm × 5-mm × 1.5-mm, 40-pin QFN, pitch = 0.5 mm
- Create a Custom Design Using the TPS546D24A With WEBENCH Power Designer
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Description
The TPS546D24A is a highly integrated, non-isolated DC/DC converter capable of high frequency operation and 40-A current output from a 7-mm × 5-mm package. Two, three, and four TPS546D24A devices can be interconnected to provide up to 160 A on a single output. The device has an option to overdrive the internal 5-V LDO with an external 5-V supply via the VDD5 pin to improve efficiency and reduce power dissipation of the converter.
The TPS546D24A uses a proprietary fixed-frequency current-mode control with input feedforward and selectable internal compensation components for minimal size and stability over a wide range of output capacitances.
The PMBus interface with 1-MHz clock support gives a convenient, standardized digital interface for converter configuration as well as monitoring of key parameters including output voltage, output current, and internal die temperature. Response to fault conditions can be set to restart, latch off, or ignore, depending on system requirements. Back-channel communication between stacked devices enables all TPS546D24A converters powering a single output rail to share a single address to simplify system software/firmware design. Key parameters including output voltage, switching frequency, soft-start time, and overcurrent fault limits can also be configured through BOM selection without PMBus communication to support program free power-up.
Same functionality and pinout but is not an equivalent to the compared device:
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Features
- 1.2-V output at 10 A
- Selectable internal compensation
- PMBus programmable switching frequency from 225 kHz to 1.5 MHz
- PMBus telemetry of VIN, VOUT, IOUT, and internal die temperature
- Adaptive Voltage Scaling (AVS) and margining via PMB
- Differential Remote Sense with Internal FB divider for <1% total (...)
Description
Features
- 1.2-V output at 20 A
- Selectable internal compensation
- PMBus programmable switching frequency from 225 kHz to 1.5 MHz
- PMBus telemetry of VIN, VOUT, IOUT, and internal die temperature
- Adaptive voltage scaling (AVS) and margining via PMB
- Differential remote sense with internal FB divider for <1% total (...)
Description
Features
- 2x stacked devices with current sharing
- Selectable internal compensation
- PMBus programmable switching frequency from 225 kHz to 1.5 MHz
- PMBus telemetry for VOUT, IOUT and internal die temperature
- Adaptive voltage scaling (AVS) and margining
- Remote differential remote sensing with internal FB divider for (...)
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 PMP21814 PCB.pdf (1771KB) -
download PMP21814 Gerber.zip (880KB) -
download PMP21814 BOM (Rev. A).pdf (102KB) -
download PMP21814 Assembly Drawing (Rev. A).pdf (340KB) -
download PMP21814 CAD Files (Rev. A).zip (1921KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
LQFN-CLIP (RVF) | 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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