LCD bias supply with a 8.6 V to 14.7 V input window
The Texas Instruments TPS65178RSLR is a multi-output bias supply IC designed for LCD TV and monitor panels. It accepts a nominal 8.6 V to 14.7 V input rail — typically a regulated 12 V bus from the main power supply — and generates the multiple regulated voltages needed by the source driver, gate driver, and timing controller.
Supply rail and thermal layout for the 48-VQFN
The 48-VFQFN with exposed pad (6x6 mm body) requires a thermal land pattern on the PCB with multiple vias to an internal ground plane. The supply range (8.6 V to 14.7 V) means the part runs directly off a 12 V bus without a pre-regulator, but the input capacitor ESR and ripple current rating must be sized for the peak load step.