TPS53632GRSMT - 48V GaN Half-Bridge D-CAP+ Controller | TI
MPN: TPS53632GRSMT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.5 | $8.50 |
| 10 | $7.65 | $76.50 |
| 100 | $6.42 | $642.00 |
| 500 | $5.78 | $2,890.00 |
| 1,000 | $5.1 | $5,100.00 |
Drop-in alternatives for TPS53632GRSMT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TPS53632GRSMR
✅ Drop-In📋 Reference alternative (not in catalog)
TPS53632GRSMT Maximum Ratings & Electrical Characteristics
| Function | Half-Bridge PWM Controller, D-CAP+ |
| Topology | Half-Bridge, Step-Up/Step-Down, Single-Output |
| Input Supply Voltage | 2.5 V to 24 V |
| Output Voltage Range | 0.5 V to 1.52 V |
| Maximum Output Current | 60 A |
| Bus Voltage Target | 48 V (GaN converter) |
| Control Interface | I2C Rev 3.0 |
| Control Architecture | D-CAP+ (fast transient, low output capacitance) |
| Recommended Power Devices | TI GaN power stages |
| Package | 32-VQFN (RSM), 4x4 mm, exposed pad |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel (T suffix) |
| Operating Temperature | [DATA_NEEDED: operating temperature range] |
| Switching Frequency | [DATA_NEEDED: switching frequency] |
| Telemetry | Current monitor via I2C |
| RoHS Status | Compliant |
| Lifecycle Status | Active (TI.com) |
TPS53632GRSMT 32-vqfn (rsm), 4x4 mm, exposed pad Pin Configuration Guide
Complete pinout information for TPS53632GRSMT (32-vqfn (rsm), 4x4 mm, exposed pad package). This power device features gate, drain, and source terminals. For non-polarized packages, refer to the manufacturer datasheet for exact pin 1 orientation and footprint details. Common applications include power supply design, motor driving, and load switching.
No detailed pinout data available for TPS53632GRSMT.
Refer to the datasheet for full pin configuration.
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
TPS53632GRSMT is suitable for 6 applications: 48-V Server Power Shelf, GaN-Based Point-of-Load Conversion, Telecom Rectifier and Base Station Power, High-Density Networking Equipment, GPU/AI Accelerator Board Power, Industrial 48-V Drive and Automation Power.
48-V Server Power Shelf
The TPS53632GRSMT fits hyperscale server 48-V power shelves where its half-bridge D-CAP+ topology converts the 48-V bus directly to a low-voltage 0.5 V to 1.52 V rail at up to 60 A in a single stage. According to the TI datasheet, this single-stage conversion removes the intermediate 12-V converter stage, improving end-to-end efficiency and raising power density. The I2C Rev 3.0 interface lets the shelf BMC adjust output setpoint dynamically and read back current telemetry, while the D-CAP+ loop maintains regulation during processor load steps with minimum output capacitance.
Recommended
GaN-Based Point-of-Load Conversion
For GaN-based point-of-load converters, the TPS53632G is purpose-built: TI pairs it with its GaN power stages, whose fast switching edges reduce switching loss at 48 V. The controller's D-CAP+ architecture delivers the fast transient response and lowest output capacitance that POL designs demand, and the 0.5 V to 1.52 V output window with 60 A capability covers modern core rails. Designers should keep gate-drive loops short to exploit GaN speed without excessive ringing, and use the 4x4 mm VQFN exposed pad for compact thermal design in dense POL layouts.
Recommended
Telecom Rectifier and Base Station Power
Telecom infrastructure runs on a native -48 V/48-V bus, making the TPS53632GRSMT's direct 48-V single-stage conversion a natural fit for rectifier auxiliary outputs and base-station processing boards. Its 2.5 V to 24 V control supply range simplifies housekeeping-rail generation, while I2C telemetry supports remote current monitoring demanded by network-management systems. The D-CAP+ control tolerates wide-line transients typical of telecom buses with minimal output capacitance, reducing BOM cost in high-reliability outdoor equipment where board space and component count drive cost.
Recommended
High-Density Networking Equipment
Switches and routers increasingly adopt 48-V power distribution to cut I2R losses; the TPS53632GRSMT converts this bus straight to ASIC core voltages (0.5 V to 1.52 V, 60 A) without an intermediate stage, freeing board area in 1U platforms. The controller's fast D-CAP+ transient response handles the sharp current steps of traffic burst processing, and current-monitor telemetry via I2C enables thermal and power budgeting in the chassis manager. The 32-VQFN 4x4 mm footprint suits the compact power sections typical of high-port-count switching designs.
Recommended
GPU/AI Accelerator Board Power
AI accelerator boards need hundreds of amps at sub-1.5 V from a 48-V rack bus; TPS53632GRSMT-based single-stage half-bridge converters eliminate the 12-V intermediate stage, directly improving deliverable compute per watt. The 60 A per-controller rating allows paralleling stages, and D-CAP+ control absorbs the extreme load transients of training workloads with reduced output capacitor banks. The I2C interface supports per-rail telemetry needed for fleet-level power management, making the controller well matched to 48-V datacenter GPU and TPU accelerator power architectures.
Recommended
Industrial 48-V Drive and Automation Power
Industrial automation increasingly uses 48-V DC microgrids for drives, robotics, and motion control. The TPS53632GRSMT provides the control logic to build efficient 48-V-to-low-voltage converters for controllers, sensors, and FPGA banks, with the 0.5 V to 1.52 V, 60 A output window covering FPGA core rails. Its D-CAP+ loop responds quickly to the pulsating loads of motor-drive logic, and I2C control lets a PLC host trim voltages for margining tests. Designers should observe the datasheet layout rules for switching-loop inductance in electrically noisy factory environments.
Recommended
Recommended Products Summary
Engineering reference data for TPS53632GRSMT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TPS53632GRSMR | TPS536C9RSLR | TPS53622RSBT |
|---|---|---|---|---|
| Package | 32-VQFN (RSM) 4x4 mm EP | 32-VQFN (RSM) - same | VQFN (RSL) - different | VQFN-32 (RSB) - different pinout |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Topology | Half-Bridge (48-V GaN) | Half-Bridge (48-V GaN) | Multiphase D-CAP+ buck | 3-2-1 phase buck |
| Output Voltage Range | 0.5 V to 1.52 V | 0.5 V to 1.52 V | [DATA_NEEDED] | [DATA_NEEDED] |
| Max Output Current | 60 A | 60 A | [DATA_NEEDED] | [DATA_NEEDED] |
| Control Interface | I2C Rev 3.0 with telemetry | I2C Rev 3.0 with telemetry | I2C/PMBus, richer telemetry | I2C |
| Control Architecture | D-CAP+ half-bridge | D-CAP+ half-bridge | D-CAP+ multiphase | D-CAP+ |
| Target Bus Voltage | 48 V single-stage | 48 V single-stage | Intermediate-bus (low V) | Intermediate-bus (low V) |
| Drop-in Replacement | - | Yes (same die/package) | No - redesign required | No - different topology/pinout |
Key Differentiators
- Single-stage 48-V conversion (vs TPS53622RSBT)
- GaN-optimized half-bridge control (vs TPS536C9RSLR)
- Identical drop-in twin exists (vs TPS53632GRSMR)
Design Notes
Keep the half-bridge switch-node loop as small as possible by placing the TI GaN power stages directly adjacent to the TPS53632G. Short, wide gate-drive traces are essential because GaN devices switch with very fast edges; excess loop inductance causes gate ringing that can exceed device ratings. Solder the 32-VQFN exposed pad to a continuous ground plane with an array of thermal vias for both heat dissipation and a low-inductance return path.
The 48-V single-stage conversion concentrates switching losses in the power stage rather than the controller, but verify the GaN power stage thermal budget at full 60 A load using the TI datasheet efficiency curves for your output voltage setpoint. Size the output capacitor bank per the D-CAP+ guidance - one benefit of D-CAP+ is minimum output capacitance for a given transient, so do not over- or under-design the ceramic bank without simulating the worst-case load step.
Do not confuse the TPS53632G with the non-G TPS53632, which is a different 3-2-1 phase buck controller with a different pinout. Also confirm the I2C address mapping and telemetry register behavior against the TI datasheet before tying multiple controllers to a shared bus in shelf designs; the I2C Rev 3.0 interface supports dynamic VOUT changes that must be bounded by your board's voltage-margining limits.
Compliance Information
RoHS compliance per standard TI catalog part listing; detailed REACH/halogen status available on TI.com product page for TPS53632G.
