DocID010708 Rev 6

11/21

STA518

Electrical specifications

21

Figure 3. Low-current dead time for single-ended application: test circuit

Figure 4. High-current dead time for bridge application: block diagram

Figure 5. High-current dead time for bridge application: test circuit

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

+VCC

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))

+VCC

Rload=8

Ω

Q2

OUTB

DTout(B)

DTin(B)

DTout(A)

C71 470nF

C70

470nF

C69

470nF

Iout=4.5A

Iout=4.5A

Q4

Q1

Q3

M64

INB

M63

D03AU1517

M58

INA

M57

DTin(A)

Duty cycle=A

Duty cycle=B

Duty cycle A and B: Fixed to have DC output current of 4.5A in the direction shown in figure

L68 22

μ

L67 22

μ

OUTA