AN1625 APPLICATION NOTE

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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.

Hall 120°

12

3a

-

4

5

6a

-

Hall 60°

12

-

3b

4

5

-

6b

HH

L

H

L

L

H

L

LH

H

H

H

L

L

L

L

L

L

HHH

H

L

Vs

High Z

GND

GND

GND

High Z

Vs

Vs

High Z

Vs

Vs

Vs

High Z

GND

GND

GND

GND

GND

High Z

High Z

Vs

Vs

High Z

High Z

Phasing

1->3

2->3

2->1

2->1

3->1

3->2

1->2

1->2

Input Data

Package

PowerSO36

Copper Area

5.0

1÷10 sq. cm

Copper Area is on

Same side of the device

Ground Layer

YES

Ambient Tem perature

50

-25 ÷ 100 ºC

Results

Thermal Resistance

Junction to Ambient

20.81

ºC / W

Thermal Resistance

Junction to Pins / Slug

1.00

ºC / W

Estimated Junction

Temperature

99.35

ºC

Estimated

Pins / Slug Temperature

96.98

ºC