The 17IPS72 operates through high-frequency switching. The control IC monitors the output voltages and adjusts the "on-time" of the MOSFET switches to maintain stability.

The board generates several regulated low-voltage outputs, typically +3.3V (standby), +5V , and +12V .

The 17IPS72 is a Switched-Mode Power Supply (SMPS) designed to convert high-voltage AC mains into stable DC rails for the TV's internal components. Key sections of the schematic include: