STA335BW datasheet(13/54 Pages) STMICROELECTRONICS

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STA335BW

Electrical specifications

13/54

3.4

Testing

3.4.1

Functional pin status

Figure 3.

Test circuit 1

Figure 4.

Test circuit 2

Table 6.

Functional pin status

Pin name

Pin #

Logic value

IC-STATUS

PWRDN

Low Absorption

PWRDN

Normal Operation

TWARN

From external power stage is indicated a Temperature

Warning.

TWARN

Normal Operation

EAPD

Low Absorption for power stage. All internal regulators are

switched off.

EAPD

Normal operation

Low current dead time = MAX(DTr,DTf)

OUTxY

Vcc

(3/4)Vcc

(1/2)Vcc

(1/4)Vcc

DTf

DTr

Duty cycle = 50%

INxY

OUTxY

gnd

+Vcc

M58

M57

R 8

Ω

V67 =

vdc = Vcc/2

D03AU1458

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

+VCC

Rload=4

Ω

OUTB

DTout(B)

DTin(B)

DTout(A)

C71 470nF

C70

470nF

C69

470nF

Iout=1.5A

M64

INB

M63

D06AU1651

M58

INA

M57

DTin(A)

Duty cycle=A

Duty cycle=B

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

L68 10

L67 10

OUTA

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