Jeffrey Sterrett

US Patent 7088596 Switching power supply with novel common mode filter arrangement

US Patent 7088597 High voltage supply device for eliminating a surge voltage

US Patent 7091703 Dynamic reactive compensation system and method

US Patent 7095216 Power supply method and apparatus

US Patent 7099167 Step-down circuit, power supply circuit, and semiconductor integrated circuit

US Patent 7106037 Switching-type constant current power supply device

US Patent 7106038 Increased output range and decreased gain variation PWM circuit and method

US Patent 7106040 Adaptive voltage scaling power supply for use in a digital processing component and method of operating the same

US Patent 7106602 Switching-bursting method and apparatus for reducing standby power and improving load regulation in a DC—DC converter

US Patent 7109689 Transient-phase PWM power supply and method

US Patent 7109690 Fast-disabled voltage regulator circuit with low-noise feedback loop and operating method thereof

US Patent 7110272 Inverter bridge controller implementing short-circuit protection scheme

US Patent 7122998 Current summing low-voltage band gap reference circuit

US Patent 7123489 Variable-frequency flyback converter with synchronous rectification function

US Patent 7123494 Power factor correction circuit and method of varying switching frequency

US Patent 7126316 Difference amplifier for regulating voltage

US Patent 7129677 Vector controller, a polyphase synchronous rectifier, and a method of vector-controlling thereof

US Patent 7129683 Voltage regulator with a current mirror for partial current decoupling

US Patent RE39374 Constant voltage power supply with normal and standby modes

US Patent 7133299 Zero voltage switching power conversion circuit

US Patent 7135840 DC/DC converter circuit and method for DC/DC conversion

US Patent 7135844 Control circuit for DC/DC converter

US Patent 7136293 Full wave series resonant type DC to DC power converter with integrated magnetics

US Patent 7142440 Ripple-current reduction for transformers

US Patent 7145786 Point of load sine amplitude converters and methods

US Patent 7148662 Electrical circuit for reducing switching losses in a switching element

US Patent 7148665 Power supplying methods and apparatus that provide stable output voltage

US Patent 7148669 Predictive digital current controllers for switching power converters

US Patent 7148671 Method and apparatus for maintaining an approximate constant current output characteristic in a switched mode power supply

US Patent 7148673 Method and apparatus including low loss DC/DC converter

US Patent 7151365 Constant voltage generator and electronic equipment using the same

US Patent 7157893 Temperature independent reference voltage generator

US Patent 7161336 Power supply device and electronic equipment comprising same

US Patent 7161340 Method and apparatus for generating N-order compensated temperature independent reference voltage

US Patent 7161341 System, circuit, and method for auto-zeroing a bandgap amplifier

US Patent 7161342 Low loss DC/DC converter

US Patent 7164561 Voltage regulator using protected low voltage devices

US Patent 7166991 Adaptive biasing concept for current mode voltage regulators

US Patent 7170267 Switching regulator with average current mode control

US Patent 7173404 Auto-switching converter with PWM and PFM selection

US Patent 7173830 Device for converting an AC voltage from a main electricity supply to a DC voltage at a predetermined level and waveform

US Patent 7173836 Circuit making use of push/pull-type control chip to drive half bridge-type inverter circuit

US Patent 7176668 Switching regulator with advanced slope compensation

US Patent 7180274 Switching voltage regulator operating without a discontinuous mode

US Patent 7183752 Connection method for a static VAR compensator

US Patent 7184285 DC-DC conversion circuit

US Patent 7190599 Method for determining output currents of frequency converter

US Patent 7193400 DC converter with halt mode setting means

US Patent 7193870 Method and apparatus for dissipative clamping of an electrical circuit

US Patent 7199560 Switch-mode power supply voltage regulator and methodology

US Patent 7200015 Automatic capacitor discharge for power supplies

US Patent 7200017 Controller and driving method for supplying energy to display device circuitry

US Patent 7205751 Enable and disable of diode emulation in a DC/DC converter

US Patent 7206209 Switching power supply apparatus with error amplification control

US Patent 7206210 Power supply control loop with multiple leveling modes

US Patent 7208930 Bandgap voltage regulator

US Patent 7209370 Circuit for reducing losses at light load in a soft switching full bridge converter

US Patent 7209372 Flyback converter with synchronous rectifier

US Patent 7209374 Capacitor-input positive and negative power supply circuit

US Patent 7212415 Resonance type switching power source

US Patent 7215103 Power conservation by reducing quiescent current in low power and standby modes

US Patent 7215108 Method for starting a voltage-mode switching power supply into a biased load

US Patent 7218081 Power system having multiple power converters with reduced switching loss

US Patent 7221130 Switching power converter employing pulse frequency modulation control

US Patent 7224154 System and method for adjusting the current limit of a power supply

US Patent 7224592 Multi-period cycle-alternative switching mode power supply control device and its control method

US Patent 7227341 Circuit for use with switched leg power supply

US Patent 7235958 Apparatus and method to synchronize switching frequencies of multiple power regulators

US Patent 7236380 Rectifier system having different rectifier elements

US Patent 7239533 DC power supply apparatus

US Patent 7242168 Wide input range buck/boost switching regulator

US Patent 7242596 Control method for switching power supply circuit

US Patent 7245113 High light load efficiency synchronous buck regulator with pulse skipping control

US Patent 7245511 Resistor dropper power supply with surge protection

US Patent 7245512 PID based controller for DC—DC converter with post-processing filters

US Patent 7248025 Voltage regulator with improved power supply rejection ratio characteristics and narrow response band

US Patent 7248030 Circuit and method for controlling step-up/step-down DC-DC converter

US Patent 7253597 Curvature corrected bandgap reference circuit and method

US Patent 7256571 Power supply dynamic set point circuit

US Patent 7259542 System and method for controlling bidirectional three-phase DC/DC converter

US Patent 7259972 Primary-side-control power converter having a switching controller using frequency hopping and voltage and current control loops

US Patent 7265521 Reactive power compensation to minimize step voltage changes and transients

US Patent 7265525 Self-driven scheme for synchronous rectifier having no body diode

US Patent 7266002 Voltage-voltage converter for integrated circuits

US Patent 7271573 Low loss DC/DC converter including a multi-level controller that applies a monotonic sequence of voltage levels

US Patent 7272020 Isolated, current-fed, pulse width modulation, DC-DC converter

US Patent 7274175 Multiple output power supply that configures itself to multiple loads

US Patent 7274176 Regulator circuit having a low quiescent current and leakage current protection

US Patent 7274578 Converter circuit having class E converter modules

US Patent 7276885 Apparatus and method for power sequencing for a power management unit

US Patent 7277302 12-pulse converter including a filter choke incorporated in the rectifier

US Patent 7279872 Circuit and method for processing a supply voltage with voltage peaks

US Patent 7282896 Apparatus and method for sliding-mode control in a multiphase switching power supply

US Patent 7282897 Apparatus and method for transient control in a multiphase switching power supply

US Patent 7282901 Temperature independent low reference voltage source

US Patent 7285940 Voltage regulator with shunt feedback

US Patent 7285941 DC-DC converter with load intensity control method

US Patent 7292015 High efficiency, high slew rate switching regulator/amplifier

US Patent 7292016 Buck/boost DC-DC converter control circuit with input voltage detection

US Patent 7292019 Method for accurately setting parameters inside integrated circuits using inaccurate external components

US Patent 7292462 DC/DC converter having transistor switches with flywheel diodes and program for controlling the transistor switches

US Patent 7295449 Simple switched-mode power supply with current and voltage limitation

US Patent 7295450 Primary-controlled SMPS with adjustable switching frequency for output voltage and current control

US Patent 7301312 Switching power supply unit for generating an output voltage stepped up from an input voltage

US Patent 7301316 Stable DC current source with common-source output stage

US Patent 7301319 Methods and apparatus for maintaining an approximate constant current output characteristic in a switched mode power supply

US Patent 7301786 Quasi resonant type switching power supply apparatus with overcurrent limiting

US Patent 7307407 Power supply apparatus

US Patent 7307859 Circuit for reduction of voltage stress between windings

US Patent 7319311 Step down switching regulator with the substrate of the switching transistor selectively connected to either its drain or source

US Patent 7324354 Power supply with a digital feedback loop

US Patent 7327124 Control apparatus and method for a boost-inverting converter

US Patent 7327125 Power supply circuit having voltage control loop and current control loop

US Patent 7327127 Pulse-frequency mode DC-DC converter circuit

US Patent 7333350 Self driven synchronous rectifier shutdown circuit and method

US Patent 7333353 Isolating type self-oscillating flyback converter with a soft start loop

US Patent 7336511 Power supply control loop with multiple leveling modes

US Patent 7339800 Switching power source device of resonance type capable of controlling switching loss and noise

US Patent 7339806 Adjustment device for adjusting wave shape of output of a DC-AC inverter

US Patent 7345458 Booster that utilizes energy output from a power supply unit

US Patent 7345462 Method and apparatus for trimming current limit and frequency to maintain a constant maximum power

US Patent 7345464 PWM power supply controller having multiple PWM signal assertions and method therefor

US Patent 7345896 Secondary side power supply controller and method therefor

US Patent 7352155 Apparatus and method for detecting battery pack voltage

US Patent 7352156 State-of-charge estimating device of secondary battery

US Patent 7352161 Burst-mode switching voltage regulator with ESR compensation

US Patent 7355867 Power supply for an electric meter having a high-voltage regulator that limits the voltage applied to certain components below the normal operating input voltage

US Patent 7359220 Control circuit for controlling a switch based on a voltage of an auxiliary winding in a switching power supply

US Patent 7359224 Digital implementation of power factor correction

US Patent 7362080 Power regulator having over-current protection circuit and method of providing over-current protection thereof

US Patent 7362084 Fast voltage regulators for charge pumps

US Patent 7362592 Switching control circuit for primary-side controlled power converters

US Patent 7362593 Switching control circuit having off-time modulation to improve efficiency of primary-side controlled power supply

US Patent 7362599 Switching power supply with capacitor input for a wide range of AC input voltages

US Patent 7365523 Scrambling of the current signature of an integrated circuit

US Patent 7368896 Voltage regulator with plural error amplifiers

US Patent 7369417 Method and system for producing controlled frequency power from a variable frequency power source

US Patent 7369419 Voltage converter

US Patent 7372241 Apparatus and method for switching voltage regulation

US Patent 7372710 Switching power source device of the type capable of controlling power loss in generating output voltage from a secondary winding of a transformer

US Patent 7372711 Circuit and method for reducing voltage spikes due to magnetizing current imbalances and power converter employing the same

US Patent 7375502 Secure supply of an integrated circuit

US Patent 7375994 Highly efficient isolated AC/DC power conversion technique

US Patent 7378821 Method and apparatus using VAR measurements to control power input to a three-phase induction motor circuit

US Patent 7378823 Multi-output type DC/DC converter with a constant on time interval in a steady state

US Patent 7382113 High-efficiency high-voltage difference ratio bi-directional converter

US Patent 7382636 System and method for powering a load

US Patent 7385378 Constant-voltage circuit, semiconductor device using the same, and constant-voltage outputting method providing a predetermined output voltage

US Patent 7385379 No load to high load recovery time in ultraportable DC-DC converters

US Patent 7385833 Snubber circuit for a power converter

US Patent 7391196 In system analysis and compensation for a digital PWM controller

US Patent 7391631 Switching power source device

US Patent 7405545 Voltage-regulator and power supply having current sharing circuit

US Patent 7439717 Secondary side post regulators

US Patent 7994764 Low dropout voltage regulator with high power supply rejection ratio