TPS53632GRSMT - 48V GaN Half-Bridge D-CAP+ Controller | TI
MPN： TPS53632GRSMT ✓ 啟用中TPS53632GRSMT 概覽
A DC/DC switching controller is a power management IC that regulates output voltage by driving external power switches (here, GaN FETs) through a feedback-controlled PWM loop. Within the power-management hierarchy, the TPS53632G sits in the switching controller family above simple buck converters, targeting LLC-like half-bridge topologies for high-voltage server and telecom power systems.
Key features include D-CAP+ control for ultra-fast load transients without complex loop compensation, an I2C Rev 3.0 interface for dynamic output voltage control and current-monitor telemetry, and compatibility with TI GaN power stages for 48-V input conversion. FindIC lists conversion from 2.5 V to 24 V control supply with a step-down single output of 0.5 V to 1.52 V at up to 60 A, making it well suited to low-voltage, high-current CPU/ASIC core rails fed from 48-V infrastructure.
Technically, the D-CAP+ architecture combines a constant-on-time modulator with internal ripple compensation, delivering low output ripple and excellent transient behavior even with all-ceramic output capacitor banks. The I2C telemetry loop supports fault status readback, enabling power-system monitoring in datacenter and base-station designs.
Typical applications include 48-V server power shelves, GaN-based point-of-load converters, telecom rectifiers, and high-density networking equipment where a single-stage 48-V-to-1-V conversion eliminates an intermediate bus converter stage, improving efficiency and power density.
When designing, follow the TI datasheet layout guidelines: keep the switch-node loop compact, place GaN power stages adjacent to the controller, and use the exposed thermal pad soldered to a solid ground plane for heat spreading and EMI control.
直接替換替代品，適用於 TPS53632GRSMT — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： TPS53632GRSMT （相同外形與佔位） — 差異在於 Function, Package, Topology.
TPS53632GRSMR
✅ 直接替換📋 參考替代品（不在目錄中）
TPS53632GRSMT 最大額定值與電氣特性
| 功能 | Half-Bridge PWM Controller, D-CAP+ |
| 拓撲 | Half-Bridge, Step-Up/Step-Down, Single-Output |
| Input Supply Voltage | 2.5 V to 24 V |
| 輸出電壓範圍 | 0.5 V to 1.52 V |
| 最大輸出電流 | 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 |
| 封裝 | 32-VQFN (RSM), 4x4 mm, exposed pad |
| 安裝類型 | Surface Mount |
| Packaging | Tape & Reel (T suffix) |
| Telemetry | Current monitor via I2C |
| RoHS 狀態 | Compliant |
| 生命週期狀態 | Active (TI.com) |
TPS53632GRSMT 32-vqfn (rsm), 4x4 mm, exposed pad 腳位配置指南
TPS53632GRSMT（32-vqfn (rsm), 4x4 mm, exposed pad 封裝）的腳位配置。 此功率元件具有閘極、汲極與源極端子。對於非極性封裝，請參閱製造商資料表以取得確切的第 1 腳方向與佈局詳細資訊。常見應用包括電源設計、馬達驅動與負載切換。
無詳細腳位定義資料： TPS53632GRSMT.
請參閱 資料表 以查看完整腳位配置。
典型應用
TPS53632GRSMT 適用於 6 應用s: 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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
推薦產品摘要
工程參考資料，適用於 TPS53632GRSMT — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | 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 |
| 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 |
主要差異化特點
- Single-stage 48-V conversion (對比TPS53622RSBT)
- GaN-optimized half-bridge control (對比TPS536C9RSLR)
- Identical drop-in twin exists (對比TPS53632GRSMR)
設計說明
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.
合規資訊
RoHS compliance per standard TI catalog part listing; detailed REACH/halogen status available on TI.com product page for TPS53632G.
