Hitachi 55HK6T64U Service Manual page 19


Networking Home Terminal

Digital Set Top Box(STB)
TPS54328
General Description
The TPS54328 is an adaptive on-time D-CAP2 mode synchronous buck converter.The TPS54328 enables
system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low
component count, low standby current solution. The main control loop for the TPS54328 uses the D-CAP2
mode control that provides a fast transient response with no external compensation components. The adaptive
on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode
operation at light loads. Eco-mode allows the TSP54328 to maintain high efficiency during lighter load
conditions. The TPS54328 also has a proprietary circuit that enables the device to adopt to both low equivalent
18
Table: Recommended operating conditions
Figure: Pin Description
Table: Pin functions