NXP Semiconductors
FRDM33772BTPLEVB
Featuring the MC33772B battery cell controller IC
FRDM33772BTPLEVBUG
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User guide
Rev. 1.0 — 22 June 2018
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applications. The device performs ADC conversion on the differential cell voltages and
currents. It is also capable of battery charge coulomb counting and battery temperature
measurements. The FRDM33772BTPLEVB is an ideal platform for rapid prototyping of
MC33772B-based applications that involve current, voltage, and temperature sensing.
The information is digitally transmitted to a microcontroller for processing. The evaluation
board can be used in conjunction with a transceiver physical layer transformer driver
(MC33664) to convert MCU SPI data bits to pulse bit information for the MC33772B and
vice versa.
4.2 Board features
This FRDM33772BTPLEVB's main features are as follows:
•
Daisy chain device connection
•
LED indicator for operation mode
•
Cell-balancing resistors
•
Cell sense input with RC filter
•
GPIO: digital I/O, wake-up inputs, convert trigger inputs, ratiometric analog inputs,
analog inputs with absolute measurements
•
EEPROM (connected to the IC with I
2
C interface) to store user-defined calibration
parameters
•
Fault detection pin report
•
Current Measurement Input via external shunt
4.3 Block diagram
Figure 1. Block diagram