The NXP battery cell controller MC33772C is a 6-channel lithium-ion battery controller IC. MC33772C is a lithium-ion battery controller IC designed for automotive and industrial control applications such as HEV, EV, ESS, and UPS systems.
characteristic:
ADC can convert battery differential voltage (averaging up to 256 samples), current, Coulomb counting, and temperature measurement
Embedded balanced transistors and rich diagnostic functions can simplify applications
Supports standard SPI and transformer isolation daisy chain communication with MCU (via MC33664), enabling data processing and control of up to 63 nodes in a daisy chain
Support a daisy chain loop
The main product features of NXP battery cell controller MC33772C, a 6-channel lithium-ion battery controller IC:
supply voltage
- 6V ≤ VPWR ≤ 30V working voltage, 40V transient voltage
Advanced voltage and temperature measurement
- 6 battery voltage measurement channels, integrated average value can reach 256 samples - (MC33772B has no average value)
Total stack voltage measurement
0.8 mV maximum total voltage measurement error
7 ADC/universal IO/temperature sensor inputs
Synchronous advanced current measurement
- Integrate current sensor with PGA
Accuracy up to ± 0.5%, range from milliampere to several thousand ampere
Built in Coulomb counter
Passive balance on board
- Onboard 300mA low on resistance passive cell balanced MOSFET with diagnostic function
Sleep pattern balance
Programmable balanced timer for each MOSFET
Isolate daisy chain or SPI communication
- 2.0 Mbps, two pairs of twisted pair cables, differential, isolated daisy chain communication
Supports inductance and capacitance coupling - (only applicable to transformer coupling of MC33772B)
Each daisy chain can have up to 63 nodes - (MC33772B has 15 nodes)
Supports one daisy chain loopback - (for MC33772B without loopback function)
Addressable during initialization
4Mbps SPI
Diagnosis, functional safety, and stability
- OV/UV, OT/UT, OC fault verification
Sleep mode OV/UV, OT/UT monitoring
Supports ISO 26262, up to ASIL D safety level
Supports hot swapping and AEC Q-100
