Holtek is delighted to announce the release of two new dedicated CAN Bus battery charger MCUs, the HT45F5QC-5 and HT45F5QC-6. Both devices include an integrated CAN Bus controller which supports the CAN 2.0A/B protocol specifications and conforms to ISO11898-1:2003 standards. The devices are for chargers used by two and three wheeled electric vehicles, electrically-assisted bicycles, etc. The devices can communicate with the vehicle host, instruments, BMS and other functional units to obtain battery characteristics, charging status updates as well as other functions. The devices include two 14-bit DACs and two OPAs as well as a reference voltage source which has a tolerance of ±1% and which can accurately control the charger voltage and current. The devices are suitable for use by different battery types that are used by different types of vehicle.

With regards to other functions there are 8K/16K×16 Flash Program Memory, 512/1024 ×8 RAM and 16 multi-function I/O pins. The multi-channel 12-bit A/D converter is used to measure voltage, temperature and other signals. There is also a group of OPAs with a gain of either 20 or 40 which allows lower values of current detection resistors to be used. This improves the conversion efficiency and increases the measured current accuracy.

The devices support various software self-detect features, which allow them to meet a range of safety requirements. The HT45F5QC-5 and HT45F5QC-6 are supplied in 28-pin SSOP and 32-pin QFN package types. When used together with Holtek’s charger workshop, users are able to easily select their required charging voltage and current values as well as other specifications. This workshop will also be able to generate MCU code for generic lithium battery and lead acid battery charging functions, a platform which will help designers greatly reduce their product development times. When used together with charger volume production tools, customers have a means of rapid volume production thus reducing production line effort.

Reference source: https://www.holtek.com/page/contentDetail?cYear=2024&cMonth=0&cType=productnews&cCode=c059020