HR1213 Datasheet PDF | Monolithic Power Systems

Monolithic Power Systems HR1213

The HR1213 is a multi-mode PFC and current mode LLC combo controller that can be configured via the UART interface. The PFC controller employs a patented, digital average current control scheme to achieve hybrid continuous conduction mode (CCM) and discontinuous conduction mode (DCM) operation. The HR1213 has an internal, high-voltage (HV) current source for start-up, meaning that a traditional start-up resistor or external circuit is not required.

Part No.	HR1213
Datasheet	HR1213 Download
Manufacturer	Monolithic Power Systems
Description	LLC Combo Controller
Buy	Stock & Price

DESCRIPTION

Powersaving technology helps the device optimize efficiency across the full operating range. Under heavy loads, CCM reduces the peak MOSFET current so the controller can be used across a wider load range. Under light loads, DCM reduces the switching frequency for better 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 operation. An external DC source can provide a supply for VCC.