TS4956 datasheet(38/51 Pages) STMICROELECTRONICS

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TS4956

Application information

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and its value is:

Note:

This maximum value depends only on power supply voltage and load values.

The efficiency is the ratio between the output power and the power supply:

The maximum theoretical value is reached when VPEAK = VCC/2, so

4.3.2

Phantom ground output configuration (modes 3, 4):

The average current delivered by the supply voltage is:

Figure 127. Current delivered by supply voltage in the phantom ground output

configuration

The power delivered by supply voltage is:

Then, the power dissipation by each amplifier is

and the maximum value is obtained when:

and its value is:

Note:

This maximum value depends only on the power supply voltage and load values.

diss

MAX

------------- W

()

out

sup ply

-------------------

πV

PEAK

---------------------

---

78.5%

Icc

AVG

---

PEAK

-----------------

()

sin

∫

PEAK

πR

---------------------A

()

sup ply

CCICC

AV G

()

diss

22 VCC

π R

---------------------- P

ou t

⎝⎠

⎜⎟

⎛⎞

ou t W

()

–

out

∂

∂P

diss

MA X

---------------W

()

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