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(2) PWM function (in the case of Reverse) (EN: H, ENB: L)
Figure 7.1-3 Current flow at the time of PWM function (Reverese)
Note: Some of the functional blocks and circuits in the block diagram may be omitted or simplified for
explanatory purposes.
PWM function (Reverse) timing chart (in the case of short brake operation, PWM1 = PWM2 = L)
●
H
PWM1
L
H
PWM2
L
ON
Pch
OFF
O
U
ON
T
Nch
1
OFF
ON
Pch
O
OFF
U
T
ON
2
Nch
OFF
*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 μs (typ.)) are prepared.
Figure 7.1-4 (1) Timing chart at the time of PWM function (Reverse)
Note: Some of timing charts in this document may be omitted or simplified for explanatory purposes
.
* The mark of a circle shows DMOS Tr which is ON.
Dead
Time
Reverse
D.T
Dead
Time
Short brake
D.T
9 / 49
TB9051FTG
Reverse
Ver.1.1 2019-03-14
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