Calculation tool
TPS546B24A
2.95-V to 18-V, stackable 20-A synchronous SWIFT™ buck converter with pin-strapping and PMBus
Data sheet
TPS546B24A
- Split rail support: 2.95-V to 18-V PVIN; 2.95-V to 18-V AVIN (4-VIN VDD5 for switching)
- Integrated 5.5-mΩ/1.8-mΩ MOSFETs
- Average current mode control with selectable internal compensation
- 2×, 3×, 4× stackable with current sharing up to 80 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 TPS546B24A With WEBENCH Power Designer
The TPS546B24A is a highly integrated, non-isolated DC/DC converter capable of high frequency operation and 20-A current output from a 7-mm × 5-mm package. Two, three, and four TPS546B24A devices can be interconnected to provide up to 80 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 TPS546B24A 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 TPS546B24Aconverters 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.
Similar products you might be interested in
Pin-for-pin with same functionality to the compared device
Technical documentation
No results found. Please clear your search and try again.
View all 12 Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
TPS546A24AEVM-1PH — 2.95-V to 18-V, 10-A synchronous buck evaluation module
The TPS546A24AEVM-1PH is an evaluation module (EVM) for the TPS546A24A 10-A buck converter. The TPS546A24A device is a stackable synchronous buck with PMBus interface that can operate from a nominal 2.95-V to 18-V supply. The device allows programming and monitoring through the PMBus interface.
Evaluation board
TPS546B24AEVM — 40-A, 2-phase synchronous buck evaluation module
The TPS546B24AEVM-2PH evaluation module (EVM) is a 40-A, two-phase buck converter with two TPS546B24A devices. The TPS546B24A device is a stackable synchronous buck with PMBus interface that can operate from a nominal 2.95-V to 18-V supply. The device allows programming and monitoring via the (...)
Evaluation board
TPS546B24AEVM-1PH — 2.95-V to 18-V, 20-A synchronous buck evaluation module
The TPS546B24AEVM-1PH is an evaluation module (EVM) for the TPS546B24A 20-A buck converter. The TPS546B24A device is a stackable synchronous buck with PMBus interface that can operate from a nominal 2.95-V to 18-V supply. The device allows programming and monitoring through the PMBus interface.
Simulation model
TPS546B24A SIMPLIS Transient and Average Model
SLUM750.ZIP (1784 KB) - SIMPLIS Model
Simulation model
TPS546B24A Unencrypted PSpice Average Model Package (Rev. A)
SLUM715A.ZIP (72 KB) - PSpice Model
Calculation tool
SLURB01 — TPS546D24A TPS546B24A TPS546A24A Excel Calculator Tool and Checklist
Supported products & hardware
Products
AC/DC & DC/DC converters (integrated FET)
Reference designs
PMP21814 — 4-Phase, 160-A synchronous buck converter reference design for communications processor power
This reference design uses four TPS546D24A converters with integrated MOSFETs to support a full load of 160A at a 0.9V output. The system operates at a switching frequency of 650 kHz and has a PMBus interface that can be used to configure key converter parameters, including internal compensation. (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| LQFN-CLIP (RVF) | 40 | Ultra Librarian |
Ordering & quality
Information included:
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Information included:
- Fab location
- Assembly location
Support & training
TI E2E™ forums with technical support from TI engineers
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.