User Guide
24 of 46
Rev. 1.0
2022-03-09
48V Battery Switch Reference Design
R 48V BATT Switch10
System and functional description
The gate driver doesn’t need to be enabled to display or change the configuration. When the driver is disabled,
the current configuration is stored to be used in the next initialisation with the command “init”.
2ED4820-EM gate driver configuration settings
Table 7 lists the possible configuration settings for the gate driver 2ED4820-EM
Table 7
Driver configuration settings
Command
Description
Setting Value
ovrt
VBAT overvoltage auto-restart time
0
10 µs
1
50 µs
2
200 µs
3
1 ms
uvrt
VBAT undervoltage auto-restart time
0
1 ms
1
5 ms
2
20 ms
3
50 ms
blk (a/b)
MOSFET voltage blank time
0
10 µs
1
20 µs
2
50 µs
3
100 µs
flt (a/b)
MOSFET voltage filter time
0
0.5 µs
1
1 µs
2
2 µs
3
5 µs
dsov (a/b)
Drain-source overvoltage threshold
0
100 mV
1
150 mV
2
200 mV
3
250 mV
4
300 mV
5
400 mV
6
500 mV
7
600 mV
sst (a/b)
Safe state in case of VDS overvoltage
0
channel is deactivated
1
channel stays active
xctr
Channel cross-control
