1 Features
• Configured for rugged applications
– 3-V to 18-V input voltage range
– 0.6-V to 7-V output voltage range
– 6-A continuous output current
– 0.6-V ±1% reference voltage (25°C)
– 98% maximum duty cycle
– 600-kHz switching frequency
– Non-latched for OC, OV, UV, and OT
protections
– Built-in output discharge function
• Numerous pin-compatible options
– TPS566231 and TPS566238 with SS pin for
adjustable soft-start time
– TPS566231P and TPS566238P with PG pin for
power-good indicator
– TPS566231 and TPS566231P for auto-skip
mode
– TPS566238 and TPS566238P for continuous
current mode
• Mandarin data sheet available
• Small design size and ease of use
– Integrated power MOSFET with RDS(on) 20.8
mΩ and 10.6 mΩ
– D-CAP3™ control mode for fast transient
response and internal compensation
– 1.5-mm × 2.0-mm HotRod™ QFN package
– Create a custom design with the WEBENCH®
Power Designer

2 Applications
• Digital TV, set-top box, gaming consoles
• Server, storage and networking point-of-load
• Industrial PC, IP camera, and factory automation
applications

3 Description
The TPS56623x are simple, easy-to-use, highefficiency,
6-A synchronous buck converters in a QFN
9-pin 1.5-mm × 2.0-mm package.
The devices operate with wider supply input voltage
ranging from 3 V to 18 V. The D-CAP3 control
mode is adopted to provide a fast transient response,
good line and load regulation, no requirement for
external compensation, and support to low-ESR
output capacitors.
The TPS566231 and TPS566231P operate in Ecomode
for high efficiency during light load operation.
The devices are designed as the ULQ™ DC/DC
converter, achieving 50-μA quiescent current to
enable long battery life in low-power applications. The
TPS566238 and TPS566238P operate in continuous
current mode, which maintains lower output ripple
during all load conditions.
The TPS566231 and TPS566238 soft-start time can
be adjusted through the SS pin. The TPS566231P
and TPS566238P indicate power good through the
PG pin.
The TPS56623x can support up to 98% duty cycle
operation, and integrate complete protection through
OVP, OCP, UVLO, OTP, and UVP with hiccup. The
devices are each available in a 9-pin 1.5-mm × 2.0-
mm HotRod package. The junction temperature is
specified from –40°C to 125°C.