TPS56C230RJERG4中文资料德州仪器数据手册PDF规格书

1 Features

• Input voltage range: 4.5 V to 18 V

• Output voltage range: 0.6 V to 5.5 V

• Supports 12-A continuous output current

• D-CAP3™ architecture control for fast transient

response

• ±1% feedback voltage accuracy (25°C)

• Integrated 17-mΩ and 5.9-mΩ FETs

• Selectable Eco-mode™ and Forced Continuous

Conductive Mode (FCCM) by MODE pin

• 500-kHz switching frequency

• Adjustable soft-start time with default 1.2 ms

• Integrated Power Good indicator

• Built-in output discharge function

• Cycle-by-cycle over current protection

• Non-latched over-voltage, under-voltage, overtemperature

and under voltage lock-out

protections

• -40°C to 125°C Operating Junction Temperature

• 20-pin 3.0-mm × 3.0-mm HotRod™ VQFN

package

• Pin to pin compatible with 8-A TPS568230

• Create a Custom Design Using the TPS56C230

With the WEBENCH® Power Designer

2 Applications

• DTV and Set-top box

• PC and Industrial PC

• Wired networking

• Distributed power systems

3 Description

The TPS56C230 is a high efficiency synchronous

buck converter with integrated FETs. System

designers can use the device in a wide variety of

applications since it draws low standby current and

requires few external components.

The TPS56C230 employs D-CAP3 control that

provides fast transient response and excellent line

and load regulation with internal compensation. It also

has a proprietary circuit that enables the device to

support low equivalent series resistance (ESR) output

capacitors such as specialty polymer and ultra-low

ESR ceramic capacitors.

TPS56C230‘s MODE pin can be used to set Ecomode

or FCCM mode for light-load operation. Ecomode

maintains high efficiency during light load

operation, and FCCM mode operations keeps output

ripple small at light load. The device supports both

internal and external soft-start time option. It has an

internal fixed soft-start time 1.2 ms, but if the

application needs a longer soft-start time, the external

SS pin can be used to achieve it by connecting a

external capacitor.

The TPS56C230 integrates power good indicator and

provides output discharge function. It provides

complete protection including OVP, UVP, OCP, OTP

and UVLO. The device is available in a 20-pin 3.0-

mm x 3.0-mm HotRod package and the junction

temperature is specified from –40°C to 125°C.