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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4.4 Device features
The MC33772B is a battery cell controller IC designed to monitor battery characteristics,
such as voltage, current and temperature. The MC33772B contains all the circuit blocks
necessary to perform synchronous battery cell voltage/current measurement, coulomb
counting, cell temperature measurement and integrated cell balancing. The device
supports the following functions:
Table 1. MC33772B device features
Device
Description
Features
MC33772B
Battery cell controller
•
5.0 V ≤ VPWR ≤ 30 V operation, 40 V transient
•
3 to 6 cells management
•
0.8 mV total cell voltage measurement error
•
Isolated 2.0 Mbps differential communication or 4.0 Mbps SPI
•
Addressable on initialization
•
Synchronized cell voltage/current measurement with coulomb count
•
Total stack voltage measurement
•
Seven GPIO/temperature sensor inputs
•
5.0 V reference supply output with 5 mA capability
•
Automatic over/undervoltage and temperature detection routable to fault pin
•
Integrated sleep mode over/undervoltage and temperature monitoring
•
Onboard 300 mA passive cell balancing with diagnostics
•
Hot plug capable
•
Detection of internal and external faults, as open lines, shorts, and leakages
•
Designed to support ISO 26262 up to ASIL D safety system
•
Fully compatible with the MC33772 for a maximum of 14 cells
•
Qualified in compliance with AEC-Q100
4.5 Board description
The FRDM33772BTPLEVB allows the user to exercise all the functions of the MC33772B
battery controller cell.
Figure 2. Board description