STA323W datasheet(22/77 Pages) STMICROELECTRONICS

22 / 77 page

Electrical characteristics curves

STA323W

22/77

Figure 13 shows the mono mode output power as a function of power supply voltages for

loads of 4, 6, 8 and 16

Ω. The same current limits as those given for Figure 12 apply, except

output current is 8 A minimum, with 12 A typical in the mono-bridge configuration. The solid

curves show typical performance and dashed curves depict the minimum current limit. The

output power curves assume proper thermal management of the power device internal

dissipation.

Figure 14.

Half-bridge binary mode output power vs. supply, THD+N=10%

Figure 14 shows the output power as a function of power supply voltages for loads of 4, 6,

and 8

Ω when the STA323W is operated in a half-bridge binary mode. The curves depict

typical performance. Minimum current limit is not reached for these combinations of voltage

and load impedance. The output power curves assume proper thermal management of the

power device internal dissipation.

Figure 15.

Half-bridge binary mode output power vs. supply voltage, THD+N=1%

4ohm

6ohm

8ohm

Power Supply Voltage (VDC)

Output power (W)

Curves measured at

f = 1 kHz and using

a blocking capacitor

of 330 µF

supply voltage (V)

output power (W)

8 ohm

4 ohm

3 ohm

2 ohm

Curves measured at

f = 1 kHz and using

a blocking capacitor

of 330 µF

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