LOAD REGULATION COMPENSATION MODULE AND SWITCHING CONVERTER COMPRISING THE SAME
Granted: October 9, 2014
Application Number:
20140300336
A switching converter and a load regulation compensation module for improving load regulation accuracy of the switching converter. The switching converter regulates its output voltage through controlling a switch module to switch on and off based on a first reference signal and a feedback signal indicative of the output voltage. The on and off switching of the switch module generates a switching current, resulting in an average offset voltage between an internal reference ground and a…
VOLTAGE CONVERTER CIRCUIT AND ASSOCIATED CONTROL METHOD
Granted: October 2, 2014
Application Number:
20140292299
A converter circuit and associated control method are disclosed hereby. The converter circuit has an error amplifier to provide an error signal; a proportional amplifier to provide a gain signal according the error signal and an output voltage of the converter circuit; a first comparator, generating a pulse signal according to the gain signal and a comparison signal; and a timer, generating a timing signal according to the pulse signal to indicate the on time and the off time of the…
EFFICIENT CONTROL CIRCUIT FOR BUCK-BOOST CONVERTERS AND CONTROL METHOD THEREOF
Granted: September 25, 2014
Application Number:
20140285170
A controller used in a buck-boost converter includes a logic control circuit, a pulse width increasing circuit, a pulse width decreasing circuit, a first driving circuit and a second driving circuit. The pulse width increasing circuit generates a sum control signal based on a logic control signal generated by the logic control circuit. The pulse width increasing circuit increases the pulse width of the logic control signal by a first value to generate the pulse width of the sum control…
HIGHLY EFFICIENT PFC CIRCUIT AND CONTROL METHOD THEREOF
Granted: September 25, 2014
Application Number:
20140285163
A PFC circuit includes: a switching circuit having a power switch; an on time control circuit for controlling an on time period of the power switch; a first off time control circuit; a second off time control circuit; and a logic circuit selectively controls the power switch working under CCM or DCM; when working under CCM, the first off time control circuit controls an off time period of the power switch and when working under DCM, the second off time control circuit controls the off…
REFERENCE COMPENSATION MODULE AND SWITCHING REGULATOR CIRCUIT COMPRISING THE SAME
Granted: September 18, 2014
Application Number:
20140266092
A switching regulator circuit and a reference compensation module employed for compensating a reference signal in the switching regulator circuit. The switching regulator circuit with a reference ground having an average offset voltage referenced to a package ground pin, wherein the average offset voltage is proportional to an output current of the switching regulator circuit with a first factor. The reference compensation module may be configured to receive a second reference signal…
SWITCHING CONVERTER WITH ADAPTIVE OFF TIME CONTROL AND THE METHOD THEREOF
Granted: September 11, 2014
Application Number:
20140253079
A switching converter having a power stage with a main switch to convert an input voltage to an output voltage; a current sense circuit generating a current sense signal indicative of a current flowing through the main switch; a PWM generator generating a PWM signal; an OFF time controller generating an OFF time control signal relating to the input voltage and the output voltage; and a logic circuit generating a switching signal based on the OFF time control signal and the PWM signal to…
SWITCHING CONVERTER WITH SLOPE COMPENSATION CIRCUIT
Granted: August 28, 2014
Application Number:
20140239934
A switching converter with slope compensation circuit, the slope compensation circuit has a first voltage source, a first operation circuit, a first switch, a first capacitor, a second switch and a first controlled current source.
HIGH VOLTAGE CIRCUIT LAYOUT STRUCTURE
Granted: July 17, 2014
Application Number:
20140197515
A high voltage circuit layout structure has a P-type substrate; a first N-type tub, a second N-type tub, a third N-type tub, a first P-type tub with a first width and a second P-type tub with a second width formed on the P-type substrate; wherein the first P-type tub is formed between the first N-type tub and the second N-type tub; and the second P-type tub is formed between the second N-type tub and the third N-type tub.
SEMICONDUCTOR DEVICE AND ASSOCIATED METHOD FOR MANUFACTURING
Granted: July 3, 2014
Application Number:
20140183627
A semiconductor device having an ESD protection structure and a method for forming the semiconductor device. The ESD protection structure is formed atop a termination area of the substrate and is electrically coupled between a source metal and a gate metal of the semiconductor device. The ESD protection structure has a first portion adjacent to the source metal, a second portion adjacent to the gate metal and a middle portion between and connecting the first portion and the second…
ESD PROTECTION STRUCTURE AND SEMICONDUCTOR DEVICE COMPRISING THE SAME
Granted: July 3, 2014
Application Number:
20140183639
An ESD protection structure and a semiconductor device having an ESD protection structure with the ESD protection structure including a patterned conductive ESD protection layer. The ESD protection layer is patterned to have a first portion of a substantially closed ring shape having an outer contour line and an inner contour line parallel with each other. The outer and the inner contour lines are waved lines. The first portion further has a midline between and parallel with the outer…
SWITCH MODE POWER SUPPLY, CONTROL CIRCUIT AND ASSOCIATED CONTROL METHOD
Granted: June 26, 2014
Application Number:
20140177290
A switch mode power supply having an output terminal configured to provide an output voltage, the switch mode power supply has a first switch and a control circuit. The control circuit is configured to provide a switching control signal to control the first switch. The control circuit is configured to provide the switching control signal based on a first pulse signal having a first frequency and a second frequency for a light load condition, and the control circuit is configured to…
POWER SUPPLY SYSTEM, RIPPLE SUPPRESSION CIRCUIT AND ASSOCIATED METHOD
Granted: June 26, 2014
Application Number:
20140176017
A power supply system having a voltage source; a load; a filter circuit to filter the voltage provided by the voltage source and to output a filtered voltage; and a follower circuit configured to generate an output signal at an output of the follower circuit based on the filtered voltage, and further wherein the output of the follower circuit is coupled to the load.
DIGITAL CONTROLLERS AND DIGITAL CONTROL METHODS OF MULTI-PHASE SWITCHING CONVERTERS
Granted: June 19, 2014
Application Number:
20140167833
A method for controlling a multi-phase switching converter with a plurality of switching circuits, including: sensing the output current of the switching circuit and generating a current sensing signal; generating a digital phase current signal based on the current sensing signal; subtracting the digital phase current signal from a current reference signal and generating a current error signal; proportionally integrating the current error signal and generating a first bias signal;…
SWITCH MODE POWER SUPPLY, CONTROL CIRCUIT AND ASSOCIATED CONTROL METHOD
Granted: June 12, 2014
Application Number:
20140160601
A switch mode power supply having an output terminal configured to provide an output voltage, the switch mode power supply has a first switch, a second switch and a control circuit. The control circuit is configured to provide a first switching control signal to turn ON and turn OFF the first switch, and when the switch mode power supply works in a power saving mode, the first switch is turned ON if a voltage feedback signal is less than a reference voltage and a current flowing through…
STEP-DOWN SWITCHING MODE POWER SUPPLY AND THE METHOD THEREOF
Granted: June 12, 2014
Application Number:
20140159693
A step-down switching mode power supply having: a Buck converter configured to provide power to a load, wherein the Buck converter has a power switch and an energy storage component; a current sense circuit coupled to the power switch to generate a current sense signal; a square circuit configured to generate a first multiply signal indicating the squared value of the input voltage; a multiply circuit configured to generate a product signal based on the first multiply signal and a second…
SUPER JUNCTION SEMICONDUCTOR DEVICE AND ASSOCIATED FABRICATION METHOD
Granted: June 12, 2014
Application Number:
20140159143
A semiconductor device with a substrate, an epitaxy layer formed on the substrate, a plurality of deep wells formed in the epitaxy layer, a plurality of trench gate MOSFET units each of which is formed in top of the epitaxy layer between two adjacent deep well, wherein a trench gate of the trench gate MOSFET unit is shallower than half of the distance between two adjacent deep wells, which may reduce the product of on-state resistance and the gate charge of the semiconductor device.
HIGH VOLTAGE HIGH SIDE DMOS AND THE METHOD FOR FORMING THEREOF
Granted: June 5, 2014
Application Number:
20140151792
A high voltage high side DMOS removing the N-buried layer from the DMOS bottom provides lower Ron*A at given breakdown voltage. The high voltage high side DMOS has a P-type substrate, an epitaxial layer, a field oxide, an N-type well region a gate oxide, a gate poly, a P-type base region, a deep P-type region, an N-type lightly doped well region, a first N-type highly doped region, a second N-type highly doped region and a P-type highly doped region.
VOLTAGE DETECTING CIRCUIT FOR SWITCHING CONVERTERS AND THE METHOD THEREOF
Granted: June 5, 2014
Application Number:
20140152283
A voltage detecting circuit used with a switching converter. The switching converter having an energy storage component, a first power switch and a second switch. The voltage detecting circuit has a sample and hold circuit configured to sample and hold the voltage at the connection node of the energy storage component and the first power switch when the first power switch is OFF and the second power switch is ON; and an average circuit configured to average the sampled voltage during a…
SWITCHING CHARGER, THE CONTROL CIRCUIT AND THE CONTROL METHOD THEREOF
Granted: June 5, 2014
Application Number:
20140152243
A switching charger having a control circuit configured to provide a control signal; a power stage turned ON and OFF by the control signal; an inductor coupled between the power stage and a load; and an output capacitor coupled in parallel with the load; a current sense circuit integrated to the control circuit to sense a current flowing through the power stage.
SWITCHING CHARGER, THE CONTROL CIRCUIT AND THE CONTROL METHOD THEREOF
Granted: June 5, 2014
Application Number:
20140152242
A switching charger having a control circuit configured to provide a control signal; a power stage turned ON and OFF by the control signal; an inductor coupled between the power stage and a load; and an output capacitor coupled in parallel with the load; wherein the control circuit limits a current flowing through the inductor in a hysteretic window, and wherein the hysteretic window is adjusted according to an ON time of the control signal.
