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.