PATENT CLAIM ANALYSIS

Application Number: 15962131
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-08
Patent Classification: ["363", "126000"]

Abstract:
A switched mode power converter has an energy transfer element that delivers an output signal to a load. A power switching device coupled to the primary side of the energy transfer element regulates a transfer of energy to the load. A secondary controller is coupled to receive a feedback signal and output a pulsed signal in response thereto. A primary controller is coupled to receive the pulsed signal and output a drive signal in response thereto, the drive signal being coupled to control switching of the power switching device. A compensation circuit generates an adaptively compensated signal synchronous with the pulsed signal. The adaptively compensated signal has a parameter that is adaptively adjusted in response to a comparison of the feedback signal with a threshold reference signal. The parameter converges towards a final value that produces a desired level of the output signal.

Claim (Index 15):
A controller for a switched mode power converter, the switched mode power converter having an energy transfer element that receives an unregulated input voltage coupled to a primary side of the energy transfer element, the energy transfer element having an secondary side that delivers an output signal to a load, a power switching device being coupled to the primary side of the energy transfer element for regulating a transfer of energy to the output signal delivered to the load, an output capacitor having an associated equivalent series resistance (ESR), the output capacitor being coupled across the secondary side of the energy transfer element, the switched mode power converter also including a feedback circuit that senses the output signal and generates a feedback signal therefrom, the controller comprising:\n a primary controller and a secondary controller, the secondary controller being coupled to receive the feedback signal and output a pulsed signal in response thereto, the primary controller being coupled to receive the pulsed signal and output a drive signal in response thereto, the drive signal being coupled to control switching of the power switching device, the secondary controller includes a compensation circuit, which comprises:\n a first capacitor coupled between a supply bus and a first node; \n a first current source coupled between the first node and ground; \n a reset device coupled across the first capacitor, when activated, the reset device discharging the first capacitor, the first capacitor charging when the reset device is not activated; \n a voltage follower circuit coupled to the first node and to a first switching device, the voltage follower circuit being configured such that when the reset device is activated, no current flows through the first switching device, and when the reset device is not activated, a ramp current flows through the first switching device; \n a current mirror that includes a first leg having a second switching device, and a second leg having a third switching device, the first leg being configured such that the second switch conducts as long as the ramp current flowing through the first switching device is below a threshold current, the second leg being configured such that the third switch conducts as long as the ramp current flowing through the first switching device is below a pre-threshold current that is a fraction of the threshold current; a second node in the second leg being a logic high value when the ramp current is below the pre-threshold current, the second node being a logic low value when the ramp current is greater than the pre-threshold current; \n a voltage-controlled current source having an input coupled to the second node through a low pass filter and a fourth switching device that is enabled by the pulsed signal, an output of the voltage-controlled current source being coupled to the first capacitor such that a charging current of the first capacitor is increased during intervals when the fourth switching device conducts and the ramp current is below the pre-threshold current, and decreased during intervals when the fourth switching device conducts and the ramp current is above the pre-threshold current; \n the current mirror including a third leg having a fifth switching device, the third leg being configured such that when the ramp current is below the threshold current, the fifth switching device conducts the ramp current and when the ramp current is above the threshold current, the fifth switching device is clamped and conducts the threshold current, thereby generating an adaptively compensated signal synchronous with the pulsed signal, the compensated reference signal having a ramp waveform with a slope that adaptively changes in response to a comparison of the feedback signal with a threshold reference signal, wherein the ramp slope converges towards a final slope that produces a desired potential level of the output signal, thereby regulating transfer of energy from the primary side to the secondary side.

Metadata:
- Claim Count in Document: 26.0
- Percentile: 91.0
- Lexical Diversity: 2.51667
- Patent Class: 363.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14679848', '14691247', '14320747', '14520142', '14483615']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8000370062520432
- 35 USC 102 Novelty (BERT): 0.485237761316963
- Combined Prediction Score: 0.7685570817585352
- Mean Citation Score: 214.710542
- Max Citation Score: 249.01363
- Similarity Product: 210.9522152548552

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

Dataset: test