EVB90401 Datasheet, PDF (2/6 Pages) Melexis Microelectronic Systems – MLX90401 Demo Board

EVB90401
MLX90401 Demo Board
1 Demo Board description
1.1 Schematic
R1
(see
text)
R2
1k5
DZ1
15V
D2
LED
R_OSC
10k
C1
330u/
63V
C2
100n
V_REF
C4
C5
22u/
100n
25V
P1 R4
100k 1k
Speed
C_OSC
5nF
TP2
Disable
Fw/Rev
TP1
Brake
60/120
IC1
MLX90401
1 Supply Voltage Cap Boost "A" 24
2
V_REF Out
Gate Top "A" 23
R5
3 Hall "A" Input Feedback "A" 22
D3
C7
10n
Q1
4 Hall "B" Input Cap Boost "B" 21
D4
5 Hall "C" Input Gate Top "B" 20
R6
C8
10n
Q2
6 Fwd/Rev Input Feedback "B" 19
7
Speed Adjust
Input / Disable
Cap Boost "C"
18
D5
8 Oscillator R/C Gate Top "C" 17
R7
C9
10n
Q3
9
/Brake Input Feedback "C" 16
10
Analog Ground
Gate Bottom
"A"
15
R8
Q4
11
60°/120°
Select Input
Gate Bottom
"B"
14
R9
Q5
12
Power Ground
Gate Bottom
"C"
13
R10
Q6
R5 ... R10 = 22R
Q1 ... Q6 = IRF530
D3 ... D5 = 1N4148
D6 … D8 = 1N4007
SW1
ON/OFF
D6
D7
D8
V+
0
Vref
HA
HB
HC
0
M1
M2
M3
1.2 Board layout
The following diagram shows a schematic overview of the most important parts of the Demo Board:
MLX90401 Demo Board
OFF ON
MLX
90401
pin1
Speed adjust
Disable
Brake
60/120 Fw/Rev
Disable Brake
390119040101
Rev 002
Page 2 of 6
Application Note
15-Jul-05