DocID018993 Rev 3

21/27

L6207Q

Output current capability and IC power dissipation

27

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Output current capability and IC power dissipation

Figure 19 and 20 show the approximate relation between the output current and the IC

power dissipation using PWM current control driving two loads, for two different driving

types:



One full bridge ON at a time (Figure 19) in which only one load at a time is energized.



Two full bridges ON at the same time (Figure 20) in which two loads are energized at

the same time.

For a given output current and driving type the power dissipated by the IC can be easily

evaluated, in order to establish which package should be used and how large the onboard

copper dissipating area must be to guarantee a safe operating junction temperature (125 °C

maximum).

Figure 19. IC power dissipation vs. output current with one full bridge ON at a time

Figure 20. IC power dissipation vs. output current with two full bridges ON at the same time