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TPA6030A4 데이터시트(PDF) 23 Page - Texas Instruments |
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TPA6030A4 데이터시트(HTML) 23 Page - Texas Instruments |
23 / 30 page TPA6030A4 SLOS395B − DECEMBER 2002 − REVISED JANUARY 2005 www.ti.com 23 Equation 12 represents the power drawn from the supply during mono operation. For stereo operation, the first term of equation 12 is doubled while the second term in the equation, quiescent power, does not change. Equation 13 represents the power drawn from the supply during stereo operation. PSUP(stereo) + 4VCCVP pRL ) VCC ICC(q) Substituting PL and PSUP into equation 10: hBTL(stereo) + 2PL 4VCCVP pRL ) VCC ICC(q) Note the factor of 2 in the numerator for stereo operation. Recall that: hBTL(stereo) + 2p PL RL 4VCC 2PL ) VCC ICC(q) p RL + 2p PL RL 4VCCVP ) VCC ICC(q) pRL VP + 2PL RL therefore, For SE operation, the current waveform is halfwave rectified. Therefore, ICCavg must be recalculated. In an SE system: ICCavg + 1 p p 2 0 VP RL sin(t) dt +* VP pRL [cos(t)] p 2 0 + VP p RL therefore, PSUP + VCCVP p RL ) VCC ICC(q) Stereo operation has the same effect in SE as it does in BTL when doubling the first term of the equation dealing with power drawn from the supply (equation 16). PSUP(stereo) + 2VCCVP p RL ) VCC ICC(q) Following the same steps for SE operation as in BTL operation: hSE(stereo) + 2PL 2VCCVP p RL ) VCC ICC(q) + 2p PL RL 2VCCVP ) VCC ICC(q) pRL Recall that: hSE(stereo) + 2p PL RL 2VCC 2PL ) VCC ICC(q) p RL VP + 2PL RL therefore, (13) (14) (15) (16) (17) (18) |
유사한 부품 번호 - TPA6030A4_07 |
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유사한 설명 - TPA6030A4_07 |
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