TPS546D24SRVFR
Active2.95-V TO 16-V, STACKABLE 40-A SYNCHRONOUS SWIFT™ STEP-DOWN PMBUS® CONVERTER WITH EXTENDED SECURITY
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TPS546D24SRVFR
Active2.95-V TO 16-V, STACKABLE 40-A SYNCHRONOUS SWIFT™ STEP-DOWN PMBUS® CONVERTER WITH EXTENDED SECURITY
Technical Specifications
Parameters and characteristics for this part
| Specification | TPS546D24SRVFR |
|---|---|
| Current - Output | 40 A |
| Frequency - Switching [Max] | 1.5 MHz |
| Frequency - Switching [Min] | 225 kHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 150 °C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Type | Programmable |
| Package / Case | 40-PowerLFQFN |
| Supplier Device Package | 40-LQFN-CLIP (7x5) |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Input (Max) [Max] | 16 V |
| Voltage - Input (Min) [Min] | 2.95 V |
| Voltage - Output (Max) [Max] | 5.5 V |
| Voltage - Output (Min/Fixed) | 0.25 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 10.79 | |
| 10 | $ 9.75 | |||
| 25 | $ 9.30 | |||
| 100 | $ 8.07 | |||
| 250 | $ 7.71 | |||
| 500 | $ 7.03 | |||
| 1000 | $ 6.12 | |||
| Digi-Reel® | 1 | $ 10.79 | ||
| 10 | $ 9.75 | |||
| 25 | $ 9.30 | |||
| 100 | $ 8.07 | |||
| 250 | $ 7.71 | |||
| 500 | $ 7.03 | |||
| 1000 | $ 6.12 | |||
| Tape & Reel (TR) | 2500 | $ 5.55 | ||
| LCSC | Piece | 1 | $ 10.71 | |
| 10 | $ 9.27 | |||
| 30 | $ 8.39 | |||
| 100 | $ 7.66 | |||
| Texas Instruments | LARGE T&R | 1 | $ 7.77 | |
| 100 | $ 6.34 | |||
| 250 | $ 4.98 | |||
| 1000 | $ 4.22 | |||
Description
General part information
TPS546D24S Series
The TPS546D24S is a highly integrated, non-isolated DC/DC converter that expands on the TPS546D24A by adding manufacturer-specific PMBus commands and Extended Write Protect and Passkey. This feature improves security against malicious access to the PMBus by restricting Write capability with greater resolution than the standard Write Protect command. TPS546D24S is capable of high frequency operation and 40-A current output from a 7-mm × 5-mm package. Two, three, and four TPS546D24S 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 through the VDD5 pin to improve efficiency and reduce power dissipation of the converter.
The TPS546D24S 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 TPS546D24S 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.
Documents
Technical documentation and resources
