L9963
Data brief
Automotive chip for battery management applications
Features
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AEC-Q100 qualified
Measures 4 to 14 cells in series, with 0 us desynchronization delay between
samples. Supports also busbar connection without altering cell results
Coulomb counter supporting pack overcurrent detection in both ignition on and
off states. Fully synchronized current and voltage samples
16-bit voltage measurement with maximum error of ±2 mV in the [1.7 – 4.7] V
range, in whole operating temp range
2.66 Mbps isolated serial communication with regenerative buffer, supporting
dual access ring. Less than 2 µs latency between start of conversion of the 1
st
and the 15
th
device in a chain. Less than 4 ms to convert and read 96 cells in a
system using 8 L9963. Supports both transformer and capacitive based isolation
200 mA passive internal balancing current for each cell in both normal and
silent-balancing mode. Possibility of executing cyclic wake-up measurements.
Manual/Timed balancing, on multiple channels simultaneously; Internal/external
balancing
Fully redundant cell measurement path, with ADC Swap, for enhanced safety
and limp home functionality
Intelligent diagnostic routine providing automatic failure validation. Redundant
fault notification through both SPI Global Status Word (GSW) and dedicated
FAULT line
Two 5 V regulators supporting external load connection with 25 mA (VCOM) and
50 mA (VTREF) current capability
9 GPIOs, with up to 7 analog inputs for NTC sensing
Robust hot-plug performance. No Zeners needed in parallel to each cell
Full ISO26262 compliant, ASIL-D systems ready
TQFP64EP package
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Product status link
L9963
Product label
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Application
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48 V and high-voltage battery packs
Backup energy storage systems and UPS
E-bikes, e-scooters
Portable and semi-portable equipment
Product summary
Order code
L9963
Package
TQFP64EP
(exposed
pad down)
Packing
Tray
Description
The
L9963
is a Li-ion battery monitoring and protection chip for high-reliability
automotive applications and energy storage systems. Up to 14 stacked battery cells
can be monitored to meet the requirements of 48 V and higher voltage systems.
Each cell voltage is measured with high accuracy, as well as the current for the on-
chip coulomb counting. The device can monitor up to 7 NTCs. The information is
transmitted through SPI communication or isolated interface.
Multiple
L9963
can be connected in a daisy chain and communicate with one host
processor via the transformer isolated interfaces, featuring high-speed, low EMI, long
distance, and reliable data transmission.
DB4045
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Rev 1
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October 2019
For further information contact your local STMicroelectronics sales office.
www.st.com
L9963
Package information
2
Package information
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK
packages,
depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product
status are available at:
www.st.com.
ECOPACK is an ST trademark.
2.1
TQFP64EP (10x10x1 mm exp. pad down) package information
Figure 3.
TQFP64EP (10x10x1 mm exp. pad down) package outline
BOTTOM VIEW
D2
D3
E3 E2
D1/4
4x N/4 TIPS
aaa C A-B D
E1/4
SECTION A-A
bbb H A-B D
4x
θ2
θ1
R1
(N-4) x e
A
A2
─ 0.05
C
H
R2
GAUGE PLANE
θ
A1
b
ddd
M
A D
ccc C
D
D1
D
S
θ3
L
(L1)
SECTION B-B
1
2
3
E1/4
B
(b)
WITH PLATING
A
D1/4
c
E1
E
b1
c1
BASE METAL
A
A
(see SECTION A-A)
N
TOP VIEW
7278840_Rev9.0_PkgCode_9I
0.25
GAPGPS03451
Table 1.
TQFP64EP (10x10x1 mm exp. pad down) package mechanical data
Ref
Ө
Ө1
Min.
0°
0°
Typ.
3.5°
-
Max.
7°
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Note
(see # in Notes below)
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DB4045
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Rev 1
page 5/11
RF/Wirelessly
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