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MAX17843 Datasheet(PDF) 41 Page - Maxim Integrated Products

Part # MAX17843
Description  12-Channel, High-Voltage Smart Sensor Data-Acquisition Interface
PDF  131 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX17843 Datasheet(HTML) 41 Page - Maxim Integrated Products

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Cell Balancing
Cell-Balancing Switches
Cell balancing can be performed using any of the 12 inter-
nal cell-balancing switches to discharge cells. The cell-
balancing current is limited by the external balancing resis-
tors and the internal balancing switch resistance (RSW).
Enabling adjacent balancing switches simultaneously
may increase the balancing current significantly, so care
must be taken to not exceed the device’s maximum
operating conditions. Fault detection is described in the
Diagnostics section.
Figure 18. Cell Voltage-Alert Thresholds
Figure 19. Internal Cell Balancing
OVER-VOLTAGE SET AND CLEAR
THRESHOLDS POR DEFAULT VALUE (+5.0V)
OVER-VOLTAGE CLEAR
THRESHOLD (OVTHRCLR)
UNDER-VOLTAGE SET
THRESHOLD (UVTHRSET)
UNDER-VOLTAGE CLEAR
THRESHOLD (UVTHCLR)
UNDER-VOLTAGE SET
AND CLEAR THRESHOLDS
POR DEFAULT VALUE (+0.0V)
CELLN VOLTAGE
OVER-VOLTAGE
ALERT SET
OVER-VOLTAGE
ALERT CLEARED
UNDER-VOLTAGE
ALERT SET
UNDER-VOLTAGE
ALERT CLEARED
T
V
HV
BALANCING
SWITCH (n)
TO ALTMUX
TO ALTMUX
SWn
SWn-1
Cn
AGND
Cn-1
BALSWEN
RFILTER
RBALANCE
CELL n
RFILTER
RBALANCE
CFILTER
RBAL
FILTER
TO HVMUX
TO HVMUX
TO CELL n-1
TO CELL n+1
SENSE
WIRE
SENSE
WIRE
CFILTER
MAX17843
12-Channel, High-Voltage Smart Sensor
Data-Acquisition Interface
www.maximintegrated.com
Maxim Integrated │ 41



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