Phase calibration method and related phase-locked loop circuit
A phase-locked loop and phase calibration technology, which is applied to the automatic control of electrical components and power, can solve problems such as deviation and reduce the calibration speed of the phase-locked loop circuit 10
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[0045] Please refer to figure 2 , figure 2 It is a schematic diagram of a phase-locked loop circuit 20 in an embodiment of the present invention. The PLL circuit 20 is used to calibrate an input signal IN and a reference signal (not shown in figure 2 ) between phase errors. Such as figure 2 The PLL circuit 20 shown includes a multiplier 200 , a phase error detection unit 202 , a filter 204 , an oscillator 206 , a phase error prediction module 208 and a phase error adjustment module 210 . It is worth noting that, since the multiplier 200, the phase error detection unit 202, the filter 204, and the oscillator 206 in the phase-locked loop circuit 20 operate in the same manner as the multiplier 100, the phase error detection unit 102, the filter The device 104 and the oscillator 106 are the same, and the description is omitted here for the sake of brevity.
[0046] It is worth noting that the phase error prediction module 208 calculates the header phase error Φ of the kno...
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