AN1625 STMicroelectronics, AN1625 Datasheet - Page 24

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

AN1625 APPLICATION NOTE
Figure 25. Thermal Data inputs and results
2.14 The decoding logic
The L6235 integrated decoding logic provides the correct sequence on the three outputs for motors with both
60° and 120° spaced hall effect sensors signals. The sensors' outputs are directly connected to the H1, H2, H3
inputs of the device. The table below reports the output configurations for all possible hall effect input signals.
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Hall 120°
Phasing
Hall 60°
OUT
OUT
OUT
H
H
H
1
2
3
1
2
3
High Z
Pins / Slug Temperature
GND
1->3
Junction to Pins / Slug
Ambient Temperature
Vs
H
Estimated Junction
1
1
L
L
Thermal Resistance
Thermal Resistance
Junction to Ambient
Copper Area is on
Ground Layer
Temperature
Copper Area
Estimated
Package
High Z
GND
2->3
Vs
H
H
2
2
L
High Z
GND
2->1
3a
Vs
H
L
L
-
Same side of the device
High Z
GND
2->1
Vs
3b
H
H
H
-
PowerSO36
Input Data
Results
20.81
99.35
96.98
YES
1.00
5.0
50
High Z
GND
3->1
Vs
H
H
4
4
L
High Z
GND
3->2
Vs
H
5
5
L
L
-25 ÷ 100 ºC
1÷10 sq. cm
ºC / W
ºC / W
ºC
ºC
High Z
GND
1->2
6a
Vs
H
H
L
-
High Z
GND
1->2
6b
Vs
L
L
L
-