Figure 50. Idd Measurement Schematic Diagram - ST STM32L476G-EVAL User Manual

All manuals and user guides at all-guides.com

Figure 50. IDD measurement schematic diagram

VDD from
power
supply
VDD
Current
direction
U15B
TSZ124IPT
5
R136
7
6
3K6 0.1%
R135
1[1%]
T2
4 shunts
R123
1K[1%]
Shunt_x1000 3 5 differential
1
amplifier
2
6
FDC606P
U15D
12 TSZ124IPT
R125
14
13
3K6 0.1%
bypass path current
measurement
path
JP11
Current
direction
VDD_MCU
to MCU
+5V
decoupling capacitor
C75
close from TSZ124 part
100nF
R128
22K GND U15A
TSZ124IPT
3
1
V+
R124
2
V-
C144 1K
100nF
GND
GND GND
R129
180K 0.1%
U15C
10 TSZ124IPT U13 R122
8 1 2
I/O O/I
9 4 VDD C74 10K
C
3 5
GND VCC
SN74LVC1G66DCKT 100nF
R132
VDD
180K 0.1%
U16
C76
SN74LVC1G04DCKT VDD
5 3
100nF
U14
1 16
Q11 VCC
Shunt_x1000 2 15
Q12 Q9
3 14
Q13 Q7
4 13
Q5 Q8
5 12
Q4 MR
6 11
Q6 RS
7 10
Q3 Rtc
8 9
GND Ctc
74LV4060PW
Oscillator frequency 30KHz
PA5
IDD_Measurement
T3 4
VDD
3 5
1
2
6 PC5
IDD_WAKEUP
FDC606P
R137
C72 VDD 220K
100nF
R127
220K
PF10
IDD_CNT_EN
C77 R134 R130
1nF 15K 30K
Title: IDD_measurement
Project: STM32L476G-EVAL
Size: A3 Reference: MB1144 Revision: B-02
Date: 6/24/2015 Sheet: 19 of 25