TPS548B23中文资料4V 至 16V、20A 同步降压转换器数据手册TI规格书

描述 Description

The TPS548B23 device is a small, high-efficiency, synchronous buck converter with an adaptive on-time D-CAP4 control mode. The control method provides low minimum on-time and fast load-transient response across the entire output voltage range without requiring an external compensation network. Because external compensation is not required, the device is easy to use and requires few external components. The device is well-designed for space-constrained data center applications.

The TPS548B23 device has differential remote sense, high-performance integrated MOSFETs, and an accurate ±1.0% internal reference. The device features accurate load and line regulation and Eco-mode or Forced Continous Conduction Mode (FCCM) operation. Pinstrap options allow for configuration of the overcurrent limit, fault response, internal or external feedback , output voltage selection, switching frequency, and soft-start time..

The internal 3.0V LDO can be over-driven with an external 3.3V to 5V supply through the VCC pin to improve efficiency and reduce power dissipation.

The TPS548B23 device is a lead-free device. The device is RoHS compliant without exemption.

特性 Features

4V to 16V input voltage range

3.13V to 5.3V external VCC bias support

10mΩ and 3.3mΩ MOSFETs (VVCC = 3.3V)

20A continuous output current

Optimized 19-pin WQFN-HR package for efficiency and thermal performance

±1.0% reference (VREF) for TJ = –40°C to +125°C

0.5V to 5.5V output voltage range

Differential remote sense

D-CAP4 with ultra fast load-step response

Supports all ceramic output capacitors

Selectable auto-skip Eco-mode for high light-load efficiency

Programmable valley current limit

600kHz, 800kHz, 1.0MHz, 1.2MHz selectable switching frequency:

Programmable soft-start time

Prebiased start-up capability

Open-drain power-good output

Overvoltage and undervoltage fault protection

3mm × 3mm (0.4mm pin pitch), 19-pin QFN package

Pin-to-pin compatible with 12A TPS548A23 and 6A TPS548623