Robust, reliable
analog solutions
MC33772 and MC33664 Battery Cell
Controller and Transformer Physical Layer
The MC33772 battery six-cell controller and MC33664 transformer physical layer
solutions enable reliable, safe and bill of materials (BOM) optimized Li-ion cell
control applications with low-cost, robust, high-speed isolated communication.
TARGET APPLICATIONS
Automotive Applications
}} High-voltage battery management systems (200 V– +800 V)
}} 14 V Li-ion battery management systems
Industrial Applications
}} Energy storage systems (ESS)
With functional verification and diagnostics, the MC33772
and MC33664 support ISO 26262 SafeAssure® functional
safety. Functional verification of cell measure, current
measure, cell terminal openings or leakage and ADC
precision checks are all performed.
FEATURES
}} Uninterrupted power supply (UPS)
}} 5.0 V (7.0 V for TPL) < VPWR < 30 V operation, 42 V transient
for TPL communication
}} E-bikes, e-scooters
}} Isolated 2 Mbps differential communication or 4 Mbps SPI
This solution addresses all existing battery management
system topologies that support centralized, distributed
daisy chain as well as high-speed and robust daisy chain.
It is compatible with 14 V Li-ion batteries with one analog
front end (AFE) and optional high-speed isolated or SPI
communications. These fully integrated battery monitoring
devices are for automotive and industrial mission-critical
applications.
}} Up to six cell voltage (differential) measurements and stack
voltage measurements
High-speed and robust daisy chain is used as an alternative
to CAN solutions. Fast data acquisition and communication
to the pack controller can be achieved in only 0.86 ms for
the pack controller to acquire conversions from six cells,
seven external temperatures, the current and coulomb
counter. The MC33772 controller can work down to three
cells and up to six cells. Also, determination of individual
cell impedances in one shot is synchronized for cell
voltages and current measurements at 113 µs.
}} Designed to support ISO 26262, up to ASIL D safety
capability
}} Synchronized cell voltage/current measurement with
coulomb counting
}} Seven ADC/GPIO/temperature sensor inputs
}} Addressable on initialization
}} Onboard 300 mA passive cell balancing low ohmic
MOSFETS with diagnostics
}} Low-power modes
}} 48-pin LQFP package
EXAMPLE: TYPICAL 14 V BATTERY MANAGEMENT
SYSTEM CHIPSET FOR SPI COMMUNICATION
MC33772 AND MC33664 HIGH-VOLTAGE BATTERY
MANAGEMENT SYSTEM FOR TPL COMMUNICATION
MC33772 AND MC33664 BLOCK DIAGRAM
VPWR1
MC33772
VPWR1
VPWR2
CT6
CB6
CB6:5_C
RDTX _OUT+
RDTX_OUT-
CTn
CBn
CT1
CB2:1_C
CB1
CTREF
ISENSE+
Current
Measure
ISENSE-
Battery
Reference
GNDSUB
GNDFLG
RDTX_OUT+
RDTX_OUT-
CT6
CB6.5_C
CT5
Battery
Reference
CGND
VPRE
VANA
6 Cell
Voltage
Messure
CTn
CBn
Battery
Reference
AGND
DGND
FAULT
SDA
SDL
SPI_COM_EN
VCP
GNDCP
RESET
CSB
VCOM
CB6
VCOM
VCOM
CT5
6 Cell
Voltage
Measure
MC33772
VPWR2
EEPROM
CT1
CBB2:1_C
CB1
MCU
CTref
GPIO0
GPIO1
GPIO2
GPIO3
GPIO4
GPIO5
GPIO6
VCOM
GPIOx
CSB
MISO
MOSI
SCLK
GNDFLG
VPWR1
CT6
CB6
CB6.5_C
CT5
Battery
Reference
6 Cell
Voltage
Messure
CTn
CBn
CT1
CBB2:1_C
CB1
CTref
ISENSE+
Cell
Current
Messure
ISENSE+
Battery
Reference
GNDREF
GNDFLG
Battery
Reference
T1
1:1
VCOM
GPIO4
GPIO5
GPIO6
GNDREF
VPWR2
Battery
Reference
Battery
Reference
GPIO0
GPIO1
GPIO2
GPIO3
ISENSEBattery
Reference
VCOM
SCLKNDTX_IN-
ISENSE+
VPRE
SO
SI/RDTX _IN+
SCLK/RDTX _IN-
CGND
VANA
AGND
DGND
Fault
SDA
SDL
SC
CSE
SPI_COM_EN
RESET
SIRDTX_IN+
Battery
Reference
MC33772
RDTX_OUT+
RDTX_OUTVCOM
VCOM
AGND
DGND
Fault
SDA
SDL
SC
CSE
SPI_COM_EN
RESET
SIRDTX_IN+
Battery
Reference
Battery
Reference
T1
1:1
SCLKNDTX_IN-
Description
FRDM33772BSPIEVB (SPI mode)
MC33772 evaluation board
FRDM33772BTPLEVB (TPL mode)
MC33772 evaluation board
FRDM33664BEVB (TPL mode)
MC33664 evaluation board
MCU
T1
1:1
SPI1
MC33664
SPI2
VCOM
GPIO0
GPIO1
GPIO2
GPIO3
GPIO4
GPIO5
GPIO6
DEVELOPMENT TOOLS
Kit Number
Battery Pack Controller
Battery
Reference
CGND
VANA
Battery
Reference
MC33772 AND MC33664 PRODUCT DIFFERENTIATION
Features
Benefits
Integrated current channel and coulomb counting
Reduces BOM for 14 V Li-ion battery applications (only one AFE required)
Integrated current channel synchronized with cell
voltage measurements
Determination of individual cell impedances in one shot for improved SoC/SoH prediction
Optional high-speed isolated or SPI communication
Addresses all existing battery management system topologies (centralized, distributed daisy chain,
distributed CAN)
High-speed (2 Mbit/s) isolated high-speed
differential communication
Allows BOM cost reduction by transition from CAN to daisy chain without compromise on
communication speed
Fast data acquisition and communication to
pack controller
Significant improvement of battery diagnostics
Hot plug and random cell connection robustness
No pre-damaging of cell and no damaging of devices during customer battery/electronics assembly
ESD/EMC robustness
ESD/EMC robustness avoids external components for robustness protection (BOM reduction, board
space reduction)
Supports ISO 26262 SafeAssure® functional safety
with single package solution
Has functional verification and diagnostics
PRODUCT LONGEVITY PROGRAM
These products are/or may be supported by NXP®’s Product Longevity Program. For terms and
conditions and to obtain a list of available products, visit www.nxp.com/ProductLongevity.
www.nxp.com/battery
NXP, the NXP logo and SafeAssure are trademarks of NXP B.V. All other product or service names are the property of their
respective owners. © 2015–2018 NXP B.V.
Document Number: MC33772FSA4 REV 4
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