TPS546C25
- 2.7V to 18V input voltage with external bias
- 4V to 18V input voltage without external bias
- 0.4V to 5.5V output voltage
- Supports 35A single-phase or 2 ×, 3 ×, or 4 × stacked configurations
- Rdson_HS = 3.3mΩ, Rdson_LS = 1mΩ
- 400kHz to 2MHz operating frequency (four discrete settings through pin-strap, additional settings through PMBus)
- PMBus programmable
- Revision 1.5 compliant with PASSKEY security feature
- Input voltage, output voltage, output current, temperature telemetry
- Programmable overcurrent, overvoltage, undervoltage, overtemperature protections
- Includes single command write function in stacked configuration
- Extended write protection feature
- Non-volatile memory to store configuration settings
- Two methods for programming the output voltage
- Internal resistor divider (discrete settings) with boot-up voltage selected by pin-strapping
- External resistor divider (continuous settings) with boot-up voltage selected by VBOOT
- Precision voltage reference and differential remote sense for high output accuracy
- ± 0.5% DAC accuracy from 0°C to 85°C junction
- ± 0.85% VOUT tolerance from –40°C to 125°C junction
- Selectable FCCM/DCM in single phase only
- Start-up without PMBus communication through pin-strapping
- Safe start-up into prebiased output
- 0.5ms to 16ms programmable soft-start time
- D-CAP4 control topology with fast transient response, supporting all ceramic output capacitors
- Programmable internal loop compensation
- Selectable cycle-by-cycle valley current limit
- Open-drain power-good output
The TPS546C25 device is a highly-integrated buck converter with D-CAP4 control topology for fast transient response. All programmable parameters can be configured by the PMBus interface and stored in NVM as the new default values to minimize the external component count. Pin-strap options allow for configuration as primary or secondary, stack position and stack number, DCM (single phase only) or FCCM, overcurrent limit, fault response, internal or external feedback resistor, output voltage selection or range, switching frequency, and compensation.
The PMBus interface with 1MHz clock support gives a convenient, standardized, digital interface for configuration as well as telemetry 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. Two, three, and four TPS546C25 devices can be interconnected to provide up to 140A on a single output.
The TPS546C25 has an option to overdrive the internal 4.5V LDO with an external 5V supply through the to improve efficiency, reduce power dissipation, and enable start-up with a lower input voltage.
The TPS546C25 is a lead-free device and is RoHS compliant without exemption.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | TPS546C25 4V to 18V Input, 35A, 4 × Stackable, Synchronous Buck Converter With PMBus and Telemetry datasheet (Rev. A) | PDF | HTML | 2025/9/16 | ||
| Application brief | Powering FPGAs Supporting SmartVID using TI Switching Regulators and Modules With PMBus | PDF | HTML | 2026/7/21 | |||
| Application brief | Achieving Higher Output Current by Stacking TPS546E25 and TPS546C25 DC/DC Converters | PDF | HTML | 2025/5/4 | |||
| 應用說明 | Point-of-Load Designs in Data Center Applications for Intel Xeon Sapphire Rapids Scalable Processors (Rev. C) | PDF | HTML | 2024/10/9 | |||
| 應用說明 | TPS546E25 and TPS546C25 Advanced Product Errata | PDF | HTML | 2024/7/31 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
TPS546C25EVM-1PH — 適用於單相降壓轉換器的 TPS546C25 評估模組
USB-TO-GPIO2 — USB-TO-GPIO2 USB 介面轉接器評估模組
FUSION_DIGITAL_POWER_DESIGNER — 數位電源軟體
Fusion Digital Power™ 圖形使用者介面 (GUI) 軟體用於配置和監控選擇的德州儀器數位電源控制器和序列器/健康狀態監控器。該應用程式使用 PMBus 協定，透過 TI USB 轉接器經由序列匯流排與裝置通訊。
TPS546E25-DESIGN — TPS546E25 Design file
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WQFN-FCRLF (VBD) | 33 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。