TB9051FTG
Ver.1.1 2019-03-14
7 / 49
(1)
PWM function (in the case of Forward) (EN
:
H, ENB
:
L)
* The mark of a circle shows DMOS Tr which is ON.
Figure 7.1-1 Current flow at the time of PWM function (Forward)
Note: Some of the functional blocks and circuits in the block diagram may be omitted or simplified for
explanatory purposes.
●
PWM function (Forward) timing chart (in the case of short brake operation, PWM1 = PWM2 = L)
*D.T (Dead Time): In order to prevent the through current by simultaneous ON of Hi-side Pch Tr and
Lo-side Nch Tr, Pch Tr off and Nch Tr off time (4
μ
s (typ.)) are prepared.
Figure 7.1-2 (1) Timing chart at the time of PWM function (Forward)
Note: Some of timing charts in this document may be omitted or simplified for explanatory purposes.