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、易于使用的同步降壓轉(zhuǎn)換器，具有 4.5V 至 28V 的寬輸入電壓范圍。該器件在 4V 至 22V 輸出電壓下支持高達(dá) 8A 的連續(xù)輸出電流，并支持 USB 供電 (USB PD) 應(yīng)用的 5V、9V、15V、20V 動(dòng)態(tài)輸出變化。TPS56837H 使用 D-CAP3 控制模式提供快速瞬態(tài)響應(yīng)、良好的線路和負(fù)載調(diào)節(jié)，無(wú)需外部補(bǔ)償，并支持 MLCC 等低等效串聯(lián)電阻 (ESR) 輸出電容器。TPS56837H 在 Eco 模式下運(yùn)行，可在輕負(fù)載時(shí)實(shí)現(xiàn)高效率，并具有固定的 500kHz 開關(guān)頻率和通過(guò) MODE 引腳配置進(jìn)行的三個(gè)可選電流限制。TPS56837H 具有可通過(guò) SS 引腳電容器配置調(diào)節(jié)的軟啟動(dòng)時(shí)間。TPS56837H 采用 10 引腳 3.0mm × 3.0mm HotRod QFN 封裝，額定結(jié)溫范圍為 –40°C 至 150°C。