The ADBT1002 from Analog Devices is a 4-Channel Digital Battery Controller IC that has been optimized for minimal component count, maximum flexibility, and minimum design time. It requires a DC input voltage of 10.6 - 36 V. This BMIC consists of battery management configuration, digital control loop, current/voltage measurement, ADC, PWM controller, clock generator, GPIO block, and SPI communication interfaces, along with externally integrated host microprocessor and DC-DC converter. It supports 4 PWM control channels with a resolution of up to 14 bits to select synchronous and asynchronous rectifier operation, configures dead time compensation, and programs switching frequency from 62.5 kHz to 500 kHz in powers of 2 steps. This controller uses the digital control loop to modify PID loop filters and offers fast DC bus voltage feed forward. It also integrates a spectrum analysis function in every channel for continuous monitoring of the control channel path.

The digital controller IC uses a serial peripheral interface (SPI) to configure the integrated loop filter, PWM signal timing, and soft start timing while providing access to several monitoring and system test functions. It has a built-in checksum to further improve overall reliability. This RoHS-compliant IC consists of over-voltage protection circuits (OVP), over-current protection circuits (OCP), and an external NTC thermistor to prevent short-circuit or over-heating-related damages. It is available in a surface-mount package that measures 16.20 x 16.20 mm and is ideal for battery formation and testing, high-efficiency battery test systems with recycle capability, and battery conditioning applications.