User Manual
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V 1.0
2021-08-25
XDPP1100 technical reference manual
Digital power controller
Current balance (IBAL)
set in register
ibal_en_thresh
) the accumulated current error is held at its last value rather than being reset to
0.
shows an example magnitude response with the following values:
•
kp_ibal
= 48
•
ki_ibal
= 32
•
F
switch
= 250 kHz.
Figure 91
Example PI magnitude plot for kp_ibal = 48, ki_ibal = 32, F
switch
= 250 kHz
11.3
Current balance FW override
The current balance output, ibal_duty_adj, may be overridden through the following registers:
•
ibal_fw_en
•
ibal_fw_adj
These overrides could be used as part of a user-written FW patch to implement a different current balance
scheme.
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
100
1000
10000
100000
1000000
|H
p
i|
(d
B
)
Frequency (Hz)
Current balance PI filter
(F
switch
=250 kHz, kp_index=48, ki_index=32)
