PATENT CLAIM ANALYSIS

Application Number: 16282723
Application Type: Utility
Filing Date: 2019-02
Publication Date: 2019-06
Patent Classification: ["363", "021160"]

Abstract:
A switching power supply device has both a turn-on timing modulation function and a turn-off timing modulation function, performs the turn-off timing modulation in a PFM control region and the turn-on timing modulation in a PWM control region, and further continues at least one of the modulations even after the PFM control and the PWM control are switched from one to the other, to achieve a stable operation of the switching power supply device at the control switching boundary without significantly decreasing the modulation effect of frequency jitter control.

Claim (Index 1):
A switching power supply device, comprising:\n an energy conversion circuit to which an input voltage is input, the input voltage being a direct current input voltage; an output rectifying and smoothening circuit that rectifies and smoothens a voltage output from the energy conversion circuit to output an output voltage to a load; a switching element that is connected to the energy conversion circuit and switches the input voltage; a switching control circuit that controls a switching operation of the switching element; and an output state detection circuit that generates an output state signal indicating a state of the load, the state determining electric power output from the energy conversion circuit, wherein the switching control circuit:\n switches two control modes from one to another in accordance with the output state signal, the two control modes including: (i) a frequency changing control mode in which a turn-on timing at which the switching element is turned on is controlled in accordance with the output state signal to change a first switching frequency that is a switching frequency of the switching element; and (ii) a frequency fixing control mode in which a turn-off timing at which the switching element is turned off is controlled in accordance with the output state signal and the switching frequency of the switching element is set to a second switching frequency that is constant with respect to the output state signal; \n performs, in the frequency changing control mode, first modulation control in which the turn-off timing at which the switching element is turned off is modulated by a first modulation signal so that the first switching frequency is modulated; \n performs, in the frequency fixing control mode, second modulation control in which the second switching frequency is modulated by a second modulation signal; and \n performs at least one of the following: \n when switching the frequency changing control mode to the frequency fixing control mode, continuing the first modulation control even after the frequency changing control mode is switched to the frequency fixing control mode, the first modulation control being performed in the frequency changing mode; and when switching the frequency fixing control mode to the frequency changing control mode, continuing the second modulation control even after the frequency fixing control mode is switched to the frequency changing control mode, the second modulation control being performed in the frequency fixing control mode.

Metadata:
- Claim Count in Document: 23.0
- Percentile: 99.0
- Lexical Diversity: 1.97872
- Patent Class: 363.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['16257781', '14275348', '15595606', '16017922', '12128652']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8362872049296586
- 35 USC 102 Novelty (BERT): 0.5100856093719784
- Combined Prediction Score: 0.8036670453738906
- Mean Citation Score: 304.178456
- Max Citation Score: 318.9709200000001
- Similarity Product: 257.06759301959045

Labels:
- Claim Label 101: 1
- Claim Label 102: 0
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 0
- Label 101 Adjusted: 1

Dataset: test