EVHR1211-Y-00B is an evaluation board for Lithium-ion chargers, which are typically used in e-mobility and Uninterruptible Power Supplies applications. It can also be used as a general power supply unit. The device will regulate the output voltage to 58.8 V in case of no battery attached. This solution is based on a PFC-LLC combo controlled from a single integrated circuit (HR1211).

Instead of using expensive low-frequency filters EVHR1211-Y-00B offers excellent power factor levels with active PFC (Power Factor Corrector). Also, the design shows high power density with low overall cost. In place of diodes, synchronous rectification (SR) decreases the voltage drop, and constant current constant voltage (CC-CV) control ensures the battery is charged properly.

Lithium-ion batteries generally require a Battery Management System (BMS) to ensure the battery operates within safe parameters. This charger can interact with a BMS through a relay signal. This helps prevent high-current spikes in the output connection, which can trigger the BMS protections.

Electromagnetic compatibility (EMC) conductive, harmonic emission and no-load consumption tests are done to ensure this device meets industry standards.