►Scenario application diagram

 

►Display board photos

 

►Scheme Block Diagram

 

► Core technological advantages
(1) High string count: supports up to 22 channels/17 channels;
(2) High performance parameters: voltage measurement accuracy of 10 mV, current measurement accuracy of 1%;
(3) High stability: full pressure, wide temperature range, accuracy remains unchanged;
(4) High security: alarm report, Charge Pump FET Driver, diagnostic check function, current measurement ADC diagnostic check function, MCU fault diagnosis check

 

► Scheme specifications

 

(1) Battery string count: 22 PCS (KA49503A/AN49503A), 17 PCS (KA49517A)

 

(2) Voltage sampling accuracy: 10mV, no calibration required, 50us/channel

 

(3) Current sampling accuracy: 1 high-speed ADC (0.81ms) 0.81ms), low speed ADC (250ms

 

(4) Battery balance: Supports internal and external balance, with a maximum balance current of 50mA for internal balance

 

(5) FET drive: supports high and low edge drive, with Tf=20us Tr=20us C L=20nF for high edge drive

 

(6) Protection: Supports voltage UV/OV protection, current SCD/OCC/OCD

 

(7) Communication: SPI communication, supporting CRC verification, maximum communication rate of 1MHz, built-in WDT protection

 

(8) LDO 2.5V/3.3V/5V optional, with an output current of up to 50mA

 

(9) Working temperature range: 40-85 ℃, chip self-protection temperature: 175 ℃

 

(10) Power consumption: ActiveMode=3.6mA, SleepMode=80uA, ShutdownMode=1uA.