Figure 3-1 shows the charge process setup example. DC source 1 configurations: 58 V – 3 A. DC source 2
configurations: 48 V – 0.5 A. Electronic load configurations: 48-V CV mode.
DC Source 1
TIDA-010208
BAT+
BAT-
DC Source 2
PACK+
PACK-
+
Electronic Load
+
+
C0
C16
C15
C14
C1
P3
Figure 3-1. Charge Setup
Figure 3-2 shows the discharge process setup example. DC source 1 configurations: 48 V - 20 A. Electronic load
configurations: CC mode.
Electronic Load
TIDA-010208
BAT+
BAT-
DC Source
PACK+
PACK-
+
+
+
C0
C16
C15
C14
C1
Figure 3-2. Discharge Setup
3.3 Test Results
Cell Voltage Accuracy
When testing cell voltage accuracy, a resister divider should not be used to simulate battery cells. Since there
will be some current flowing into cell input PINs when doing ADC measurement, the resister divider will cause
further voltage drop and make the AFE readings lower than the actual value. It is good to use a real battery for
testing. Another easy way is to utilize a DC source to stabilize the cell input voltage. This method was used in
the design to test the cell voltage measurement accuracy. Figure 3-3 shows the cell voltage accuracy data
without any further calibrations and under room temperature. All 16 channels of cell voltage error are below ±5
mV.
Hardware, Software, Testing Requirements, and Test Results
www.ti.com
10 10s–16s Battery Pack Reference Design With Accurate Cell Measurement and
High-Side MOSFET Control
TIDUEY5 – JANUARY 2021
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