User Manual
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V 1.0
2021-08-25
XDPP1100 technical reference manual
Digital power controller
Telemetry sense
4
Telemetry sense
This chapter introduces the telemetry sense (TS) functionality and the relevant registers. The TS module
performs analog-to-digital conversion for the following modules:
•
Temperature telemetry
•
Input voltage telemetry
•
Current sharing
•
X-valent address programming
•
General-purpose ADC
VS and current sense modules cover the ADCs for the relevant voltage and current signals, as described in
, respectively. The TS module consists of the following submodules:
•
Telemetry sense ADC (TSADC)
•
Input mux
•
TS current DAC
•
TS processor
These submodules and their connections are shown in
, and the following subsections introduce
these submodels in more detail.
Figure 31
TS block diagram
4.1
Telemetry sense ADC
The TSADC is a successive approximation ADC, and it has the following specifications:
•
9 bits
•
1 Msps conversion rate
•
Input range 0.0 V to 1.2 V
•
LSB = 2.34375 mV
4.2
TS input mux and sequencing
The submodule input mux consists of six inputs, which are shown in
. The input signals are assigned
to the following XDPP1100 input pins: PRISEN, IMON, TSEN, BTSEN, XADDR1 and XADDR2. If a pin is not used for
the associated named function, the input is available to be used as a general-purpose ADC input.
PRISEN
IMON
(A)TSEN
BTSEN
XADDR1
XADDR2
0.6 V
Int. Temp
60k Res
Input
Muxes
TSADC
TS IDAC
10-640uA
TSP
soc
eoc
ts_adc
ts_idac
mux1_sel,mux2_sel
prisen_adc, prisen_update
imon_adc, imon_update
atsen_adc, atsen_update
btsen_adc, btsen_update
itsen_adc, itsen_update
xaddr1_adc, xaddr1_update
xaddr2_adc, xaddr2_update
vin
int_temp
100uA
100uA
clk_tsadc
clk_25mhz
(12.5 MHz)
