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Class D audio power amplifier with fine hysteresis control

Class D audio power amplifier with fine hysteresis control

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A new simple and efficient control method for a class D audio power amplifier is presented. The new fine hysteresis control method can control the switching frequency freely and guarantees stability for any load condition without having any outside compensation circuit at all.

References

    1. 1)
      • Lai, Z., Smedley, K.M.: `A low distortion switching audio power amplifier', IEEE PESC, 1995, Atlanta, CA, USA, p. 174–180.
    2. 2)
      • Dondon, P., Micouleau, J.M.: `An original approach for the design of a class D power switching amplifier-an audio application', Proc. IEEE of ICECS, 1999, Pafos, Cyprus, Greece, p. 161–164.
    3. 3)
      • N.S. Jung , J.H. Jeong , G.H. Cho . High efficiency and high fidelity analogue/digital switching mixed mode amplifer. Electron. Lett. , 828 - 829
    4. 4)
      • Marshall, A., Devore, J.: `Dual switch-mode regulator IC', IEEE ISSCC'95, 1995, San Francisco, CA, USA, p. 52–53.
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