STA517B データシートの表示（PDF） - STMicroelectronics
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STA517B Datasheet PDF : 13 Pages
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STA517B
5
Test
Figure 4. Test circuit
Low current dead time = MAX(DTr,DTf)
Duty cycle = 50%
INxY
+Vcc
M58
OUTxY
M57
gnd
OUTxY
Vcc
(3/4)Vcc
(1/2)Vcc
(1/4)Vcc
t
DTr
DTf
R 8Ω
+
-
V67 =
vdc = Vcc/2
D03AU1458
Test
Figure 5. Current dead time test circuit
Duty cycle=A
DTin(A)
INxA
High Current Dead time for Bridge application = ABS(DTout(A)-DTin(A))+ABS(DTOUT(B)-DTin(B))
+VCC
DTout(A)
M58
Q1
Q2
M64
OUTxA
Rload=8Ω
DTout(B)
OUTxB
L67 22µ
Iout=4.5A
L68 22µ
Iout=4.5A
M57
Q3
C69
470nF
C71 470nF
C70
470nF
Q4
M63
Duty cycle=B
DTin(B)
INxB
Duty cycle A and B: Fixed to have DC output current of 4.5A in the direction shown in figure
D00AU1162
9/13
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