STA32813TR View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STA32813TR

2.1-channel high-efficiency digital audio system

STMicroelectronics 

STA328

Electrical specifications

Table 8.

Symbol

Power electrical characteristics (continued)

Parameter

Test conditions

Min. Typ. Max. Unit

Input pulse width = 50%

Supply current from VCC in

duty,

IVCC

operation

switching

80

(both channel switching)

frequency = 384 kHz,

no LC filters

Iout-sh

Overcurrent protection

threshold (short circuit current

limit)

4.5 6

VUV

Undervoltage protection

threshold

7

tpw-min Output minimum pulse width No load

70

THD = 10%

Po

Output power (refer to test

circuit

RL = 4Ω, VCC = 21 V

50

RL = 8Ω, VCC = 36 V

80

THD = 1%

Po

Output power (refer to test

circuit

RL = 4Ω, VCC = 21 V

40

RL = 8Ω, VCC = 36 V

62

mA

A

V

150 ns

W

W

W

W

Figure 7. Test circuit 1

OUTxY

Vcc

Low current dead time = MAX(DTr, DTf)

+Vcc

Duty cycle = 50%

INxY

M58

M57

OUTxY

gnd

(3/4)Vcc

(1/2)Vcc

(1/4)Vcc

t

DTr

DTf

R 8W

+-

V67

vdc = Vcc/2

Figure 8. Test circuit 2

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

+VCC

Duty cycle=A

DTin(A)

INA

DTout(A)

M58

Q1

Q2

M64

OUTA

Rload=4Ω

DTout(B)

OUTB

L67 10µ

Iout=1.5A

L68 10µ

Iout=1.5A

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

D06AU1651

13/57

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