User Manual
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V 1.0
2021-08-25
XDPP1100 technical reference manual
Digital power controller
Telemetry
Peripheral Field name
Access Address
Bits
Description
7000_3800h
(Loop 1)
to 9. Set to 63 to bypass filter.
kfp_exp = tlm_kfp_iin[5:2]"
kfp_man = 4 + tlm_kfp_iin[1:0]
kfp = kfp_man * 2^kfp_exp * 2^-13
F3db(kHz) = [kfp / (1 - kfp)] *
F
switch
(kHz) / 2*pi
telem
tlm_iout_src_sel
RW
7000_3400h
(Loop 0)
7000_3800h
(Loop 1)
[21:20] Output current telemetry source
select.
0: Measured on ISEN input
1: Measured on BISEN input
2 to 3: Sum of ISEN and BISEN
inputs (dual-phase)
telem
tlm_kfp_iout
RW
7000_3400h
(Loop 0)
7000_3800h
(Loop 1)
[27:22] Output current telemetry LPF
coefficient index. Note that exp.
settings greater than 9 are clamped
to 9. Set to 63 to bypass filter.
kfp_exp = tlm_kfp_iout[5:2]
kfp_man = 4 + tlm_kfp_iout[1:0]
kfp = kfp_man * 2^kfp_exp * 2^-
13""F3db(kHz) = [kfp / (1 - kfp)] *
F
switch
(kHz) / 2*pi
telem
tlm_vin_src_sel
RW
7000_3400h
(Loop 0)
7000_3800h
(Loop 1)
[30:28] Input voltage telemetry source
select.
0: VRSEN, secondary V
RECT
sense,
vrs_init prior to start-up
1: BVSEN_BVRSEN, secondary V
RECT
sense, vrs_init prior to start-up
2: Loop 0 V
OUT
, select on Loop 1
when Loop 1 V
IN
provided by Loop 0
V
OUT
(e.g., post-buck)
3: PRISEN, non-pulsed/primary V
IN
sense via TSADC
4: tlm_vin_force, forced V
IN
via FW
(e.g., FW override of HW
computation)
5: VRSEN, secondary V
RECT
sense, 0 V
prior to start-up. Select on Loop 1
when sharing Loop 0 V
RECT
sense
6: VRSEN, non-pulsed/primary V
IN
sense
7: BVSEN_BVRSEN, non-
pulsed/primary V
IN
sense
Note:
When
tlm1_vin_src_sel
= 2
(Loop 0 V
OUT
), set PAGE 1
MFR_TRANSFORMER_SCALE =
B3FFh (0.999) and PAGE 1
MFR_VRECT_SCALE = PAGE 0
VOUT_SCALE_LOOP converted to
