HR1213GM-0000-P

The HR1213 is a multi-mode PFC and current mode LLC combo controller that can be configured via the UART interface. Power saving technology improves efficiency across the entire operating range. The PFC controller employs a patented, digital average current control scheme to achieve hybrid continuous conduction mode (CCM) and discontinuous conduction mode (DCM). At heavy loads, CCM reduces the peak MOSFET current so that the controller can be used across a wider load range. At light loads, DCM reduces the switching frequency (fSW) for improved efficiency. Burst mode has configurable, digital soft switching to improve both light-load efficiency and audible noise. Current mode control is implemented in the LLC stage to achieve good stability and fast response. Three operation modes are implemented based on the different load conditions: steady state, skip, and burst mode. This allows different load conditions to be independently optimized for efficiency. At light loads, digital, frequency-controlled burst mode is applied to reduce both switching power loss and audible noise. Adaptive dead-time adjustment (ADTA) and capacitive mode protection (CMP) is also applied to guarantee zero-voltage switching (ZVS) without capacitive mode. The HR1213 has an internal, high-voltage (HV) current source for start-up, which means that a traditional start-up resistor or external circuit is not required. An external DC source can provide a supply for VCC. Full protection features include thermal shutdown, PFC open-loop protection (OLP), over-voltage protection (OVP), over-current limit (OCL), LLC over-current protection (OCP), SO pin protection, and over-power protection (OPP). The HR1213 is available in SOIC-20 and TSSOP-20 packages.