User Manual
195 of 562
V 1.0
2021-08-25
XDPP1100 technical reference manual
Digital power controller
Telemetry
Figure 69
Input current estimation block diagram
8.6
Output and input power telemetry
Output and input power telemetry are computed in FW based on the HW-computed voltages and currents. The
output power is obtained according to Equation (8.4) and correspondingly the input power is computed based
on Equation (8.5).
𝑃
𝑂𝑈𝑇
= 𝑡𝑙𝑚𝑋_𝑣𝑜𝑢𝑡_𝑓𝑠𝑤 ∗ 𝑡𝑙𝑚𝑋_𝑖𝑜𝑢𝑡_𝑓𝑠𝑤
(8.4)
𝑃
𝐼𝑁
= 𝑡𝑙𝑚𝑋_𝑣𝑖𝑛_𝑙𝑝𝑓 ∗ 𝑡𝑙𝑚𝑋_𝑖𝑖𝑛_𝑙𝑝𝑓
(8.5)
Registers
tlmX_vout_fsw
and
tlmX_iout_fsw
are the outputs of the output voltage and output current
telemetry submodules, and correspondlingly the registers
tlmX_vin_lpf
and
tlmX_iin_lpf
are the outputs of
the input voltage and input current telemetry submodules.
8.7
Temperature telemetry
The temperature telemetry HW module block diagram is shown in
. The HW temperature telemetry
module provides low-pass filtering of the following TSADC temperature outputs:
•
ATSEN
•
BTSEN
•
ITSEN
The LPF BW is defined via register
tlm_kfp_tsen
, as shown in
U0.14
one_div_vin[13:0]
tlmX_duty_fsw[15:4]
U0.12
S
+
-
tlmX_iin_est_alpha[5:0]
U0.6
S
+
+
U0.12
tlmX_vout_div_vin[11:0]
tlmX_vout_fsw_1v[15:0]
U6.10, 1v
tlmX_iout_fsw[12:0]
S9.4
U6.7
tlmX_iin_est[12:0]
tlmX_transformer_scale_loop[11:0]
U0.12
RW parameters
RO parameters
