STA333ML(2007) Просмотр технического описания (PDF) - STMicroelectronics

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производитель

STA333ML
(Rev.:2007)

2 channel microless high efficiency digital audio system Sound Terminal™

STMicroelectronics 

STA333ML

4

Testing

Testing

Figure 3. Resistive load

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

Figure 4. Test circuit

Duty cycle=A

DTin(A)

INA

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

+VCC

DTout(A)

M58

Q1

Q2

M64

OUTA

Rload=8Ω

DTout(B)

OUTB

L67 22µ

LoIuotu=t=14.A5 A

L68 22µ

LoIuotu=t=41A.5 A

M57

Q3

C69

470nF

C71 470nF

C70

470nF

Q4

M63

Duty cycle=B

DTin(B)

INB

Duty cycle A and B: Fixed to have DC output current of 4A in the direction shown in figure

D03AU1517

9/15

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