Design Guide: TIDA-010208
10s–16s Battery Pack Reference Design With Accurate
Cell Measurement and High-Side MOSFET Control
Description
This reference design is a low standby and ship-mode
current consumption and high cell voltage accuracy
10s–16s Lithium-ion (Li-ion), LiFePO4 battery pack
design. It monitors each cell voltage, pack current, cell
and MOSFET temperature with high accuracy and
protects the Li-ion, LiFePO4 battery pack against cell
overvoltage, cell undervoltage, overtemperature,
charge and discharge over current and discharge
short-circuit situations. It adopts high-side N-channel
MOSFET architecture and has strong driving on and
off capability. Through an efficient auxiliary power
supply strategy, this reference design achieves 100-
μA stand-by and 10-μA ship mode consumption,
saving more energy and allowing longer shipping time
and idle time. These features make this reference
design highly applicable for e-bike and e-scooter
battery pack applications.
Resources
TIDA-010208 Design Folder
BQ76952, BQ77216, MSP430FR2155 Product Folder
LM5163, TCAN1042HV, TCAN1044V Product Folder
TLV704, TMP61 Product Folder
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™
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Features
• Ultra-low current consumption:
– Typical 100-μA when in standby mode
– Typical 10-μA when in shipping mode
• High cell voltage accuracy without calibrations:
– ±5 mV at 25°C; ±10 mV at 0°C–60°C; ±15 mV
at –40°C to 85°C
• Robust battery cell protection, including:
– Primary: cell overvoltage, cell undervoltage, two
levels overcurrent discharge, overcurrent
charge, discharge short circuit and
overtemperature
– Secondary: cell over voltage, cell undervoltage
and overtemperature
• Other system protections, including: cell open wire
and host watchdog
• Support random cell connections
• Reverse charger and high voltage on PACK side
• High-side N-channel MOSFETs and strong driving
capability
Applications
• Battery pack – e-bike, e-scooter, LEV
• Other industrial battery pack (≥ 10s)
Cell15
Cell16
BAT+
PACK+
PACK-
BAT-
BAT+
Cell1
Cell2
MSP430
FR2155DBT
D
1
N
I
2
C
BQ76942/
BQ769142/
BQ76952
CB
MOSFETs
LM5163
VCC
TLV704
ESD
TCAN1044V/
TCAN1042HV
Pre-discharge
TMP61
VCC
ADCIN
Temp
Temp
VC16
VC0
BQ77216
COUT
DOUT
www.ti.com Description
TIDUEY5 – JANUARY 2021
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10s–16s Battery Pack Reference Design With Accurate Cell Measurement and
High-Side MOSFET Control
1
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