Primary side regulated isolation voltage converter
Granted: October 10, 2017
Patent Number:
9787194
A primary side regulated isolation voltage converter. The primary side regulated isolation voltage converter comprises a control module and a ripple control circuit. The control module receives the voltage feedback signal and determines whether the isolation voltage converter operates in a light load state. When the isolation voltage converter operates in a light load state, the ripple control circuit senses the ripple of an output voltage signal to generate a ripple signal, and compare…
Control circuit and associated method for switching converter
Granted: October 3, 2017
Patent Number:
9780651
A control circuit for switching converter has an ON signal generating circuit, an OFF signal generating circuit, a first comparator, a second comparator and a logic circuit. The switching converter has a high switch and a low side switch connected in series. The ON signal generating circuit provides an ON signal based on a reference signal and a feedback signal. The OFF signal generating circuit provides an OFF signal. The first comparator provides a first comparing signal based on a…
Multi-phase voltage converter with fault instruction circuit
Granted: October 3, 2017
Patent Number:
9780640
A switching circuit with a fault instruction circuit used in a voltage converter or a multi-phase voltage converter. The switching circuit has a pin, the pin is configured to receive a control signal during a normal operation, and the pin is also configured to output a fault instruction signal when one or more faults occur in the switching circuit. The instruction signal represents each of the one or more faults with a particular value.
Voltage control circuit for memory cell and the method thereof
Granted: October 3, 2017
Patent Number:
9779827
A voltage control circuit for a memory cell having a floating gate transistor and a capacitive device, comprising a first input terminal, a second input terminal, a first output terminal and a second input terminal, wherein the first input terminal is configured to receive a power supply voltage, the second input terminal is configured to receive a ground reference, and wherein based on the power supply voltage and the ground reference, the first output terminal and the second output…
Control circuit and associated method for switching converter
Granted: September 26, 2017
Patent Number:
9774253
A control circuit for switching converter has an ON signal generating circuit, a current sensing circuit, an OFF signal generating circuit, a logic circuit and an OFF threshold generating circuit. The ON signal generating circuit provides an ON signal based on a reference signal and a feedback signal. The current sensing circuit provides a current sensing signal based on a current flowing through a power switch of the converter. The OFF signal generating circuit provides an OFF signal…
Semiconductor device having conductive bump with improved reliability
Granted: September 19, 2017
Patent Number:
9768135
The present disclosure discloses a semiconductor device having conductive bumps formed on a conductive redistribution layer and associated method for manufacturing. The semiconductor device may further include a first type shallow trench formed on a passivation layer overlying a semiconductor substrate. The conductive redistribution layer is formed in the first type shallow trench. A polyimide layer may be formed between neighboring conductive redistribution layers should a plurality of…
Copper structures with intermetallic coating for integrated circuit chips
Granted: September 5, 2017
Patent Number:
9754909
An integrated circuit (IC) chip includes a copper structure with an intermetallic coating on the surface. The IC chip includes a substrate with an integrated circuit. A metal pad electrically connects to the integrated circuit. The copper structure electrically connects to the metal pad. A solder bump is disposed on the copper structure. The surface of the copper structure has a coating of intermetallic. The copper structure can be a redistribution layer and a copper pillar that is…
Current balance circuit and the method thereof
Granted: August 15, 2017
Patent Number:
9734917
A current balance circuit for a power management device having a first current channel and a second current channel, having: a first current sense circuit configured to detect a current flowing through the first current channel, and to provide a first current sense signal indicative of the current flowing through the first current channel; wherein the current balance circuit draws current from the second current channel to the first current channel based on the first current sense…
Switching converter with constant on-time controller thereof
Granted: July 25, 2017
Patent Number:
9716432
A control circuit for controlling a switching circuit has a ramp compensation circuit, a DC calibration circuit, a comparison circuit and a logic circuit. The ramp compensation circuit generates a ramp compensation signal. The DC calibration circuit generates a DC calibration signal by sampling and holding the ramp compensation signal. The comparison circuit generates a comparison signal according to the ramp compensation signal, a feedback signal representative of an output voltage of…
Power bank circuit and the method thereof
Granted: July 18, 2017
Patent Number:
9711975
A power bank circuit controlling power switches to operate at different modes in accordance with different external coupling situations is discussed. The power bank circuit may be coupled to either a power source, a digital device, or a plurality of series coupled batteries at a high voltage port; and may be coupled to either a power source, a digital device, or a single battery at a low voltage port.
Digitally calibrated voltage regulators for power management
Granted: June 20, 2017
Patent Number:
9684745
A computer provides a graphical user interface for displaying a virtual representation of a voltage regulator and for accepting a user requirement for the voltage regulator. The computer automatically determines an internal calibration setting of the voltage regulator that meets the user requirement. The computer simulates operation of the voltage regulator as calibrated with the internal calibration setting. The internal calibration setting is downloaded to the voltage regulator. A…
Control circuit for multiphase switching converter to reduce overshoot and associated control method
Granted: May 23, 2017
Patent Number:
9660534
A multiphase switching converter having a plurality of switching circuits and a control circuit, the plurality of switching circuits provide an output voltage, the control circuit provides a plurality of switching control signals to turn ON the plurality of switching circuits successively based on the output voltage and a reference signal, when the output voltage is detected overshooting, the control circuit turns OFF a current switching circuit, and when the output voltage is detected…
Switching controller with reduced inductor peak-to-peak ripple current variation
Granted: May 23, 2017
Patent Number:
9660516
A switching controller having an over voltage protection circuit is disclosed. The over voltage protection circuit detects whether the output voltage is higher than an over voltage threshold and turns on the rectifier when the output voltage is higher than an over voltage threshold. The over voltage protection circuit detects whether a current flowing through a rectifier is lower than a negative current limit and further turns off the rectifier for a time period when the current flowing…
Constant on-time switching converter with adaptive ramp compensation and control method thereof
Granted: May 16, 2017
Patent Number:
9653992
A COT switching converter includes a first switch, a second switch, an inductor, an on-time control circuit configured to generate an on-time control signal, a ramp compensation generator configured to generate a compensation signal, a comparing circuit, a logic circuit, a driving circuit and a feed forward circuit configured to generate a compensation control signal based on the input voltage of the switching circuit. The comparing circuit compares the sum of the compensation signal and…
Constant on time switching converter with DC calibration
Granted: May 9, 2017
Patent Number:
9647552
A reference compensating circuit used in a COT control circuit. The reference compensating circuit has an error amplifier, a first current sink, a resistor, a second current sink, a current source and a capacitor. The error amplifier amplifies the difference between a reference signal and a feedback signal and generates an error signal. Based on the error signal, the first current sink generates a current flowing out from a node of the reference compensating circuit. The resistor…
Switching power converter, clock module, control circuit and associated control method
Granted: May 2, 2017
Patent Number:
9641085
A power converter having a clock module and a method for controlling a clock signal of the power converter. The clock module is configured to provide the clock signal and to set a clock frequency of the clock signal to a first predetermined frequency at the moment when the power converter is powered on. The clock module is further configured to regulate the clock frequency to increase from the first predetermined frequency to a second predetermined frequency through a predetermined times…
Switching mode power supply and the controller and the method thereof
Granted: April 25, 2017
Patent Number:
9634572
A switching mode power supply with resonant technology. The switching mode power supply current uses current polarity evaluation to avoid capacitive mode by triggering the capacitive protection if the evaluation indicates that the system will enter capacitive mode.
Multi-mode power converter and associated control method
Granted: April 25, 2017
Patent Number:
9634570
A multi-mode power converter and associated method for configuring and controlling a multi-mode power converter. The multi-mode power converter may have a boost operation mode and a buck operation mode. A first transistor is coupled between a switching terminal and a ground, and a second transistor and a third transistor are coupled in series between the switching terminal and an output port of the multi-mode power converter. In the buck mode, an on-resistance of the second transistor is…
Digitally controlled PFC converter with multiple discontinuous modes
Granted: April 11, 2017
Patent Number:
9621028
A PFC circuit having a switching circuit and a control circuit, the control circuit controls an operation mode of the switching circuit based on an input current and a switching frequency of the switching circuit, when the switching circuit works under a continuous current mode, the switching circuit is turned ON when the input current is less than an OFF current reference signal, and when the switching circuit works under a first discontinuous mode or a second discontinuous mode, the…
Digital isolator and the method thereof
Granted: April 11, 2017
Patent Number:
9621383
An isolator system has a transmitter configured to generate a first pair of buffered differential signals base based on an input signal; an isolation barrier having an input side coupled to the transmitter to receive the first pair of buffered differential signals, and an output side configured to provide a second pair of differential signals; and a receiver coupled to the output side of isolation barrier to receive the second pair of differential signals, wherein the receiver provides…
