TPS56837HRPAR

4.5V to 28V input, 8A synchronous buck converter with output voltage range supporting USB-C

Vin (max) (V)28Vout (min) (V)4Vout (max) (V)22Iout (max) (A)8Iq (typ) (mA)0.045Switching frequency (min) (kHz)500Switching frequency (max) (kHz)500FeaturesEnable, Forced PWM, Light Load Efficiency, Over Current Protection, Power good, Soft Start Adjustable, Synchronous RectificationOperating temperature range (°C)-40 to 150RatingCatalogRegulated outputs (#)1Control modeD-CAP3Duty cycle (max) (%)98TypeConverter

• Support for USB power delivery (USB PD)

• 4.5V to 28V input voltage range

• 4V to 22V output voltage range

• Supports 8A continuous output current

• Three adjustable cycle-by-cycle over current limit for low-side MOSFET by mode selection

• High efficiency over entire load range

• Integrated 20.4mΩ and 9.5mΩ MOSFETs

• 45uA low quiescent current

• Fixed 500kHz switching frequency

• 98.7% efficiency at VIN = 24V, VOUT = 20V and IOUT = 3A

• Eco-mode for high light-load efficiency

• 0.6V ±1% reference voltage at 25°C

• D-CAP3™ control mode for fast transient response

• Adjustable soft-start time by SS capacitor

• Built-in output discharge function

• Power-good indicator to monitor output voltage

• Supports up to 98% duty operation

• Non-latched protections for UV, OV, OT, and UVLO

• –40°C to +150°C operating junction temperature

• Small 10-pin 3.0mm × 3.0mm HotRod™QFN Package

• Pin-to-pin compatible with 6A TPS56637 and 8A TPS56837

TPS56837H 是一款高效、易于使用的同步降压转换器，具有 4.5V 至 28V 的宽输入电压范围。该器件在 4V 至 22V 输出电压下支持高达 8A 的连续输出电流，并支持 USB 供电 (USB PD) 应用的 5V、9V、15V、20V 动态输出变化。TPS56837H 使用 D-CAP3 控制模式提供快速瞬态响应、良好的线路和负载调节，无需外部补偿，并支持 MLCC 等低等效串联电阻 (ESR) 输出电容器。TPS56837H 在 Eco 模式下运行，可在轻负载时实现高效率，并具有固定的 500kHz 开关频率和通过 MODE 引脚配置进行的三个可选电流限制。TPS56837H 具有可通过 SS 引脚电容器配置调节的软启动时间。TPS56837H 采用 10 引脚 3.0mm × 3.0mm HotRod QFN 封装，额定结温范围为 –40°C 至 150°C。