TPS56836中文资料具有 Out-of-Audio™ 运行模式的 4.5V 至 28V 输入、8A 同步降压转换器数据手册TI规格书

描述 Description

The TPS5683x is a high-efficiency, easy-to-use, synchronous buck converter with a wide input voltage range of 4.5V to 28V. The device supports up to 8A continuous output current at output voltages between 0.6V and 13V.

The TPS5683x uses D-CAP3 control mode to provide fast transient response, good line and load regulation, no requirement for external compensation, and supports low equivalent series resistance (ESR) output capacitors like MLCC.

The TPS56837 operates at Eco-mode to attain high efficiency at light load. The TPS56838 operates in forced continuous conduction mode which maintains lower output ripple during all load conditions. The TPS56836 operates in Out-of-Audio mode to avoid audible noise.

The TPS5683x has three selectable switching frequencies, 500kHz, 800kHz, and 1200kHz, and selectable current limit through MODE pin configuration. The TPS5683x has adjustable soft-start time by connecting the SS capacitor and with default 1.8ms with the SS pin floating.

The TPS5683x provides complete non-latched OV (overvoltage), UV (undervoltage), OC (overcurrent), OT (overtemperature) and UVLO (undervoltage lockout) protections combined with power-good indicator and output discharge function features.

The TPS5683x is available in a 10-pin, 3.0mm × 3.0mm, HotRod QFN package, and the junction temperature is specified from –40°C to 150°C.

特性 Features

4.5V to 28V input voltage range

0.6V to 13V output voltage range

Supports 8A continuous output current

Integrated 20.4mΩ and 9.5mΩ MOSFETs

0.6V ±1% reference voltage at 25°C

45uA low quiescent current of TPS56837

D-CAP3™ control mode for fast transient response

TPS56837 with Eco-mode (auto-skip mode) for high light-load efficiency

TPS56838 with forced continuous conduction mode (FCCM)

TPS56836 with Out-of-Audio™ (OOA) mode

500kHz, 800kHz, and 1200kHz selectable switching frequencies by mode selection

Adjustable cycle-by-cycle over current limit for low-side MOSFETs by mode selection

Adjustable soft-start time with default 1.8ms

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

Create a customer design using the TPS5683x with the WEBENCH Power Designer

Pin-to-pin compatible with 6A TPS56637 and 8A TPS56837H