AN1625 STMicroelectronics, AN1625 Datasheet - Page 35

• Manufacturer Part Number: AN1625
• Description: L6235 THREE PHASE BRUSHLESS DC MOTOR DRIVER
• Manufacturer: STMicroelectronics

Figure 38. PractiSPIN ST7 Evaluation Board
4.2 EVAL6235N
An evaluation board has been produced to help the evaluation of the device in PowerDIP package. It imple-
ments a typical application with several added components. Figure 40 shows the electrical schematic of the
board; in the table below the part list is reported.
The Evaluation Board provides external connectors for the supply voltage, an external 5 V reference for the logic
inputs, three outputs for the motor and a 34-pin connector to control the main functions of the board through an
external C board.
Running the evaluation board in stand-alone mode, instead, four switches (S1) allow enabling the device, set-
ting the direction of the rotation, braking the motor, choosing to run in torque or speed mode. R17 and R22 set
CN1, CN2
CN3
CN4
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
D1, D2
D3
2-poles connector
3-poles connector
34-poles connector
220nF/100V Ceramic or Polyester capacitor
220nF/100V Ceramic or Polyester capacitor
100µF/63V capacitor
10nF/100V Ceramic capacitor
10µF/16V Capacitor
33nF Capacitor
1nF Capacitor
820pF Capacitor
10nF Capacitor
220nF Capacitor
68nF Capacitor
100nF Capacitor
1N4148 Diode
BZX79C5V1 5.1V Zener Diode
JP1, JP2
R1
R2,R3,R4,R7,R8,R9
R5
R15,R6
R11,R10
R12,R13,R14
R16
R17
R18
R19
R20
R21
R22
S1
U1
U2
AN1625 APPLICATION NOTE
2-pin jumper
700
10k
100
1k
100k
1
1M
20k
4.7k
5.6k
2.2k
1.8k
5k
quad switch
L6235N
LM358
1% resistor
resistor
trimmer
resistor
0.6W resistor
resistor
resistor
resistor
resistor
resistor
resistor
resistor
trimmer
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