設計工具
TPS546E25-DESIGN — TPS546E25 Design file
Design files for TPS546E25
TPS546B25W
- 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 25A single-phase or 2 ×, 3 ×, or 4 × stacked configurations
- Rdson_HS = 2.6mΩ, 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 TPS546B25W 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 TPS546B25W devices can be interconnected to provide up to 100A on a single output.
The TPS546B25W has an option to overdrive the internal 4.5V LDO with an external 5V supply through the VDRV and VCC pins to improve efficiency, reduce power dissipation, and enable start-up with a lower input voltage.
The TPS546B25W is a lead-free device and is RoHS compliant without exemption.
技術文件
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檢視所有 1 | 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | TPS546B25W 4V to 18V Input, 25A, Synchronous Buck Converter With PMBus, Telemetry, and Additional Addresses for Single-Phase FCCM Operation datasheet | PDF | HTML | 2025年 7月 16日 |
設計與開發
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開發板
TPS546E25EVM-1PH — TPS546E25 評估模組單相
TPS546E25 評估模組 (EVM) 是使用 TPS546E25 裝置的單相降壓設計。EVM 專為額定 12V 匯流排而設計，在高達 50A 的負載電流下會產生經調節的 1.2V 輸出。TPS546E25EVM-1PH 的設計用途是展示 TPS546E25 在單相低輸出電壓應用中的運作情形，同時提供多個測試點以評估裝置性能。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WQFN-FCRLF (RXX) | 37 | Ultra Librarian |
訂購與品質
內含資訊：
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
內含資訊：
- 晶圓廠位置
- 組裝地點
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。