STA328 datasheet(13/57 Pages) STMICROELECTRONICS

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STA328

Electrical specifications

13/57

Figure 7.

Test circuit 1

Figure 8.

Test circuit 2

IVCC

Supply current from VCC in

operation

(both channel switching)

Input pulse width = 50%

duty,

switching

frequency = 384 kHz,

no LC filters

Iout-sh

Overcurrent protection

threshold (short circuit current

limit)

4.5

VUV

Undervoltage protection

threshold

tpw-min

Output minimum pulse width

No load

150

Output power (refer to test

circuit

THD = 10%

RL = 4Ω, VCC = 21 V

RL = 8Ω, VCC = 36 V

Output power (refer to test

circuit

THD = 1%

RL = 4Ω, VCC = 21 V

RL = 8Ω, VCC = 36 V

Table 8.

Power electrical characteristics (continued)

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

DTr

DTf

Vcc

(3/4)Vcc

(1/2)Vcc

(1/4)Vcc

OUTxY

Low current dead time = MAX(DTr, DTf)

+Vcc

Duty cycle = 50%

INxY

M58

M57

OUTxY

gnd

vdc = Vcc/2

V67

R 8 W

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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