Texas Instruments D-CAP+™ TPS53632RSMT, 3-phase step-down buck PWM controller, 300kHz–1MHz switching, I²C interface, 2.5V–24V supply, 32-VQFN (4x4 mm) exposed pad, -10°C to 105°C.
| Parameter | Value |
|---|---|
| Series | D-CAP+™ |
| Output type | PWM Signal |
| Mounting | Surface Mount |
| Voltage - supply (Vcc (Vdd)) | 2.5V ~ 24V |
| Frequency - switching | 300kHz ~ 1MHz |
| I/O channels | 3 |
| Output phases | 3 |
| Serial interfaces | I²C |
| Operating temperature | -10°C ~ 105°C (TA) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Function | Step-Down |
| Topology | Buck |
| Clock sync | No |
| Case | 32-VFQFN Exposed Pad |
| Control features | Enable, Frequency Control, Power Good, Ramp |
| Output configuration | Positive |
| Synchronous rectifier | No |
With three outputs and three phases, the TPS53632RSMT is designed to drive a multi-phase buck converter for loads like DDR memory VDDQ or core voltage on a server motherboard. Each phase shares the current, reducing ripple and spreading thermal load. The I²C bus provides digital control of the output voltage and fault monitoring — a step up from analog-only controllers.
It is ROHS3 compliant.
The TPS53632RSMT is Active in production with no end-of-life notification. It is ROHS3 compliant and suitable for new designs.
Yes, the TPS53632RSMT includes an I²C serial interface for voltage identification, margining, and telemetry readback — a key feature for digital power management.
The LM5150QURUMRQ1 is a single-phase boost controller with AEC-Q100 qualification, while the UCC2806DWTR is a dual-output current-mode controller for flyback/forward topologies. Neither is a pin-compatible second source — the TPS53632RSMT's 3-phase D-CAP+™ with I²C is functionally distinct.
Yes, the 3-phase buck architecture with I²C-controlled output voltage and 300 kHz to 1 MHz switching frequency is well suited for DDR VDDQ rails requiring tight regulation and telemetry.