L6229Q

Application information

Doc ID 15209 Rev 3

23/28

Figure 23.

Typical application

6.1

Output current capability and ic power dissipation

In Figure 24 is shown the approximate relation between the output current and the IC power

dissipation using PWM current control.

For a given output current the power dissipated by the IC can be easily evaluated, in order to

establish which package should be used and how large must be the on-board copper

dissipating area to guarantee a safe operating junction temperature (125 °C maximum).

Figure 24.

IC power dissipation versus output power

1

2

3

4

5

6

7

8

24

23

22

21

20

19

18

17

9

10111213141516

32

31

30

29

28

27

26

25

GND

NC

H1 H2 H3

H1

H2

H3

NC

NC

NC

NC

NC

NC

POWER

GROUND

SIGNAL

GROUND

+

_

M

ENABLE

VCP

OUT2

VSA

GND

VSB

OUT3

NC

VBOOT

to SENSEB

to EN

HALL

SENSOR

THREE-PHASE MOTOR

+5V

+5V

No PWM

f

Test Condition s:

Supply Voltage = 24 V

0

0.25

0.5 0.75

1

1.25

1.5

0

2

4

6

8

10

P

I

OUT

[A]