Bosch Active Line 3 printed circuit board expained
Bosch Active Line 3 printed circuit board taken apart
Note that the SMD components are soldered with a very high quality, comparable to that of smartphones.
Instead of varnishing the whole PCB, this has only been done locally.
See also part 1 Bosch Active Line 3 mid-drive motor tear down
PCB top side
Serial numbers: 37170191 / 1270014076
U1
SPC56EL60L3
32-bit MCU for automotive and safety applications (SIL3/ASILD)
U2
DRV8301
Three phase gate driver with dual current shunt amplifiers and buck regulator
U3
UJA1076A
High-speed CAN core system basis chip
U4
HC74 flipflop
U5
TPS54360
Step-Down converter
60V input, 3.5A output
Q1 … Q6
BUK7Y4R8-60E
Power Mosfet
Marking code: 74E860
60V / 100A
4.8mOhm
D1
SM8S43A
43V Transient Voltage Suppressor
Peak forward surge current 700A
AEC-Q101 qualified
D2
SS5P6
Schottky diode
60V 5A
R1 R2
Current sense resistor
2mOhm
PCB bottom side
U1
VNQ7050AJ
Quad channel high-side driver with current sense analog feedback
Marking code VQ7050A
U2 U4
Unknow code 81KG4
U3 U5
TS922AIYPT
Rail-to-rail, high output current, dual operational amplifier
Marking code 922AY
U6 U7
Unreadable code
U8
The chip has no code
U9
LMV324
Quad low-voltage rail-to-rail output operational amplifiers
U10
Unknown code G2K
U11 U12
8-pin
Unknow code TDK01 / 432A080 / 7G5C1
Very likely a TDK angle sensor
Part 1
Bosch Active Line 3 mid-drive motor tear down