BIPOLAR HALL EFFECT POSITION SENSOR
FSH41
Test Circuits
FSH41
Vcc
RL=820Ω
CL=20pF
Vout
Fig1
TYPICAL APPLICATION CIRCUIT
V+=40V
100µF
0.1µF
500Ω
0.1µF
20µF
1
2
3
4
5
Speed Adjust
6
7
Supply Voltage
VrefOut
Hall"A"Input
Hall"B"Input
Hall"C"Input
FWD/RE Input
Speed Adjust Input
Cap Boost"A" 24
Gate Top"A" 23
Feedback"A" 22
Cap Boost"B" 21
Gate Top"B" 20
Feedback"B" 19
22Ω
10µF
H1
Vref
H2
H3
100µF
15V
BLDC Motor
0.1µF
Vref
22Ω
10µF
Vref
22Ω
22Ω
22Ω
22Ω
10µF
UF4002
(3 Places)
Foward/Reverse
Thermal Switch
0.1µF
Rosc 1KΩ
10KΩ
Cap Boost"C" 18
8 Oscillator Control
Gate Top"C" 17
9 (+)CurrentLimit(Brake) Feedback"C" 16
10 Analog Ground
Gate Bottom"A" 15
11 (-)CurrentLimit(Reset)Gate Bottom"B" 14
12 Power Ground
Gate Bottom"C" 13
Cosc
0.005µF
Counter Reset
1K
Filter
1K
Brake
Isense Resistor
3/5
2007-1-24
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