发明名称 |
PULSE WIDTH MODULATION CIRCUIT AND CLASS-D AMPLIFIER COMPRISING THE PWM CIRCUIT |
摘要 |
Apulse width modulation (PWM) circuit comprises a first integrator (g m1) witha first feedback capacitor (C1), a second integrator (gm1) with a second feedback capacitor (C2) and a comparator (A0) having a first input (V1) connected to the output of the first integrator (gm1) and a second input (V2) connected to the output of the second integrator (gm2). A connection path comprising a resistor (R2) is established from the output of the first integrator (gm1) to an input of the second integrator (gm2). The first and second feedback capacitors (C1, C2) have capacities witha non-linear factor X(V) and a circuit with an inversely non-linear factor X-1(V) is arranged in the connection path between the output of the first integrator (gm1) and said input of the second integrator (gm2). The PWM circuit may formpath of a Class-D amplifier. |
申请公布号 |
WO2009001254(A3) |
申请公布日期 |
2009.02.12 |
申请号 |
WO2008IB52419 |
申请日期 |
2008.06.19 |
申请人 |
NXP B.V.;BERKHOUT, MARCO;KRABBENBORG, BENNO |
发明人 |
BERKHOUT, MARCO;KRABBENBORG, BENNO |
分类号 |
H03F3/217;G06G7/184;H03F1/32;H03F3/187;H03K7/08 |
主分类号 |
H03F3/217 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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