TPS546C25
- 4V to 18V input voltage without external bias
- 2.7V to 18V input voltage with 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 pinstrap, additional settings through PMBus)
- PMBus programmability
- 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
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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 field
- Precision voltage reference and differential remote sense for high output accuracy
- +/– 0.5% DAC accuracy from 0°C to 85°C junction
- +/– 1% 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
- Programmable soft-start time from 0.5ms to 16ms
- Programmable soft-stop time from 0.5ms to 4ms
- 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. Pinstrap 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 device has an option to overdrive the internal 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 TPS546C25 is a lead-free device and is RoHS compliant without exemption.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | TPS546C25 4V to 18V Input, 35A , 4 × Stackable, Synchronous Buck Converter With PMBus and Telemetry datasheet | PDF | HTML | 2024年 7月 12日 |
| EVM User's guide | TPS546C25EVM-1PH 4V to 18V, 35A, Buck Converter with PMBus and Telemetry Evaluation Module User's Guide | PDF | HTML | 2024年 7月 3日 |
設計與開發
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TPS546C25EVM-1PH — 適用於單相降壓轉換器的 TPS546C25 評估模組
| 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
- 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
- 晶圓廠位置
- 組裝地點