TPS51217是TI公司的一款控制器（外部开关）产品，TPS51217是用于笔记本电源的具有 DCAP? 模式的 3V 至 28V 输入、 具有 DCAP? 模式的用于笔记本电源的 20A、340kHz 同步降压控制器，本页介绍了TPS51217的产品说明、应用、特性等，并给出了与TPS51217相关的TI元器件型号供参考。
TPS51217 - 用于笔记本电源的具有 DCAP? 模式的 3V 至 28V 输入、 具有 DCAP? 模式的用于笔记本电源的 20A、340kHz 同步降压控制器 - 控制器（外部开关） - DC/DC开关稳压器 - TI公司（Texas Instruments，德州仪器）
The TPS51217 is a small-sized single buck controller with adaptive on-time D-CAP? mode. The device is suitable for low output voltage, high current, PC system power rail and similar point-of-load (POL) power supply in digital consumer products. A small package with minimal pin-count saves space on the PCB, while a dedicated EN pin and pre-set frequency minimize design effort required for new designs. The skip-mode at light load condition, strong gate drivers and low-side FET RDS(on) current sensing supports low-loss and high efficiency, over a broad load range. The TRAN pin provides freedom of masking overvoltage protection, undervoltage protection and power-good signal during the transition period of dynamic output voltage change for modern GPU power supply applications. The conversion input voltage which is the high-side FET drain voltage ranges from 3 V to 28 V and the output voltage ranges from 0.6 V to 2.6 V. The device requires an external 5-V supply. The TPS51217 is available in a 10-pin SON package specified from –40°C to 85°C.
- Wide Input Voltage Range: 3 V to 28 V
- Output Voltage Range: 0.6 V to 2.6 V
- Wide Output Load Range: 0 to 20A+
- Built-in 0.5% 0.6 V Reference
- D-CAP Mode with 100-ns Load Step Response
- Adaptive On Time Control Architecture with Fixed 340kHz Operation
- Dynamic Output Voltage Change Capability
- 4700 ppm/°C RDS(on) Current Sensing
- Internal 0.9-ms Voltage Servo Softstart
- Pre-Charged Start-up Capability
- Built-in Output Discharge
- Power Good Output
- Integrated Boost Switch
- Built-in OVP/UVP/OCP
- Thermal Shutdown (Non-latch)
- SON-10 (DSC) Package
