STA500

6/11

Figure 1. Test Circuit.

Figure 2.

Figure 3.

Low current dead time = MAX(DTr,DTf)

OUTxY

Vcc

(3/4)Vcc

(1/2)Vcc

(1/4)Vcc

t

DTf

DTr

Duty cycle = 50%

INxY

OUTxY

gnd

+Vcc

M58

M57

R 8

Ω

+

-

V67 =

vdc = Vcc/2

D03AU1458

INxA

INxB

Q1

Q3

Q2

Q4

OUTxA

GND

OUTxB

D00AU1134

High Current Dead time for Bridge application = ABS(DTout(A)-DTin(A))+ABS(DTOUT(B)-DTin(B))

Rload=8

Ω

Q2

OUTxB

DTout(B)

DTin(B)

DTout(A)

C71 470nF

C70

470nF

C69

470nF

Iout=3.5A

Iout=3.5A

Q4

Q1

Q3

M64

INxB

M63

D00AU1162

M58

INxA

M57

DTin(A)

Duty cycle=A

Duty cycle=B

Duty cycle A and B: Fixed to have DC output current of 3.5A in the direction shown in figure

L68 22

µ

L67 22

µ

OUTxA