US 11,703,532 B2
Device of measuring duty cycle and compensation circuit utilizing the same
Po-Wei Wu, Taipei (TW); Hsiang-Jen Jao, Taipei (TW); Chih-Sheng Chen, Taipei (TW); and Tien-Yun Peng, Taipei (TW)
Assigned to RichWave Technology Corp., Taipei (TW)
Filed by RichWave Technology Corp., Taipei (TW)
Filed on Oct. 7, 2021, as Appl. No. 17/495,825.
Claims priority of application No. 110131455 (TW), filed on Aug. 25, 2021.
Prior Publication US 2023/0060339 A1, Mar. 2, 2023
Int. Cl. G01R 29/00 (2006.01); G01R 29/027 (2006.01)
CPC G01R 29/0273 (2013.01) 19 Claims
OG exemplary drawing
 
1. A device of measuring duty cycles comprising:
a resistor-capacitor circuit configured to generate a first voltage when a reference signal is in a first state, and generate a second voltage and a third voltage when the reference signal is in a second state, the resistor-capacitor circuit comprising:
a first resistor-capacitor sub-circuit and
a second resistor-capacitor sub-circuit, wherein the first resistor-capacitor sub-circuit and the second resistor-capacitor sub-circuit operate simultaneously to compute an ON time; and
a control circuit coupled to the first resistor-capacitor sub-circuit and the second resistor-capacitor sub-circuit to acquire the ON time according to the first voltage, the second voltage and the third voltage, wherein the ON time is approximately equal to a time of the reference signal being in the first state.