STMicroelectronics X-NUCLEO-IHM07M1 User Manual page 10

2.2.3 Bus voltage and temperature sensing circuit
The X-NUCLEO-IHM07M1
measurement. This signal is acquired with a resistor divider and an embedded NTC (close to
shown below.
V I N +
R 1 7
169 K 1 %
VBUS_SENS
R 1 8
9 . 31K 1 %
UM1943 - Rev 2
expansion board provides the hardware for bus voltage sensing and temperature
Figure 10. X-NUCLEO-IHM07M1 – VBUS and temperature sensing circuit
V B U S
C 1 4
4 . 7n F / 10 V
Temperature feedback
3 V 3
R 1 9
1
N T C 10 K
RS model 742-8420
Placed near the L6230 driver
UM1943
Analog section
L6230 driver) as
C 1 0
10n F 10 V
R 2 0
2
4 K 7
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