COT CONVERTER WITH CONTROLLED FREQUENCY AND ASSOCIATED METHOD
Granted: May 8, 2014
Application Number:
20140125302
A SMPS having a switch; an output port coupled to a load, configured to provide a voltage feedback signal and a current feedback signal; an on-time generator, having an input end coupled to the current feedback signal, and having an output end providing a time signal indicating a time period; and a PWM generator, having a first input end coupled to the voltage feedback signal, a second input end coupled to the time signal, and an output end providing a PWM signal that is coupled to the…
CHARGER SYSTEM, DIGITAL INTERFACE CIRCUIT AND ASSOCIATED CONTROL METHOD
Granted: May 1, 2014
Application Number:
20140117924
A charger system with a digital interface circuit, wherein the digital interface circuit has an N-bit control register, wherein N is a positive integer no less than 2, and wherein the N-bit register has a primary state machine, at a first portion of addresses of the control register, configured to instruct operation statuses of a system management bus host; and a secondary state machine, at a second portion of addresses of the control register, configured to instruct a data bit of…
JUNCTION FIELD EFFECT TRANSISTORS AND ASSOCIATED FABRICATION METHODS
Granted: May 1, 2014
Application Number:
20140117415
A JFET having a semiconductor substrate of a first doping type, an epitaxial layer of the first doping type located on the semiconductor substrate, a body region of a second doping type located in the epitaxial layer, a source region of the first doping type located in the epitaxial layer, a gate region of the second doping type located in the body region, and a shielding layer of the second doping type located in the epitaxial layer, wherein the semiconductor substrate is configured as…
SEMICONDUCTOR DEVICE HAVING ESD PROTECTION STRUCTURE AND ASSOCIATED METHOD FOR MANUFACTURING
Granted: April 17, 2014
Application Number:
20140103416
A semiconductor device having an ESD protection structure and a method for forming the semiconductor device. The semiconductor device further includes a semiconductor transistor formed in an active cell area of a substrate. The ESD protection structure is formed atop a termination area of the substrate and is of solid closed shape. The ESD protection structure includes a central doped zone of a first conductivity type and a plurality of second-conductivity-type doped zones and…
POWER SUPPLY SYSTEM, ASSOCIATED CURRENT RIPPLE SUPPRESSION CIRCUIT AND METHOD
Granted: March 27, 2014
Application Number:
20140085945
A power supply system has a current source configured to provide an output current, a load supplied by the current source, and a current ripple suppression circuit. The current ripple suppression circuit has a first end and a second end, wherein the first end of the current ripple suppression circuit is coupled to the load, and the second end of the current ripple suppression circuit is coupled to a reference ground; wherein the current ripple suppression circuit is configured to…
SWITCH MODE POWER SUPPLY, CONTROL CIRCUIT AND ASSOCIATED CONTROL METHOD
Granted: March 27, 2014
Application Number:
20140084885
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 turn ON and turn OFF the first switch, an on-time period of the first switch is proportional to a first value when the switch mode power supply works in a power saving mode, and the on-time period of the first switch is proportional to a second value…
VOLTAGE CONVERTER AND ASSOCIATED OVER-VOLTAGE PROTECTION METHOD
Granted: March 13, 2014
Application Number:
20140071720
A voltage converter includes: an input terminal receiving an input voltage; an output terminal providing an output voltage; a switching circuit having a main switch configured to regulate the output voltage, wherein a control end of the main switch is configured to receive a Pulse Width Modulation (PWM) signal, and the output voltage is controlled according to the duty cycle of the PWM signal; and a protection switch coupled between the input terminal and the switching circuit, and…
SWITCH MODE POWER SUPPLY, CONTROL CIRCUIT AND ASSOCIATED CONTROL METHOD
Granted: March 13, 2014
Application Number:
20140071714
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, wherein the control circuit is configured to receive a current sense signal via a reuse input pin when the first switch is turned ON, and the control circuit is configured to receive a voltage sense signal via a reuse input pin when the first switch is turned OFF.
SWITCH MODE POWER SUPPLY, CONTROL CIRCUIT AND ASSOCIATED CONTROL METHOD
Granted: March 6, 2014
Application Number:
20140062434
A switch mode power supply having an output terminal configured to provide an output voltage which is regulated to an output target, the switch mode power supply has a first switch and a control circuit. When the output voltage increases to a first threshold voltage, the control circuit is configured to turn OFF the first switch until a time period expires.
SWITCHING REGULATOR AND THE METHOD THEREOF
Granted: February 20, 2014
Application Number:
20140049235
A switching regulator including: a power stage having a first power switch and a second power switch coupled in series; a filter circuit having an inductor and an output capacitor; a feedback circuit configured to provide a feedback signal indicating an output voltage of the regulator; and a control circuit configured to provide a switching signal to control the ON and OFF of the first power switch so as to regulate the energy supplied to a load; wherein the control circuit has a peak…
OFF-LINE REGULATOR AND ASSOCIATED METHOD
Granted: February 13, 2014
Application Number:
20140043875
The present invention discloses an off-line regulator. The off-line regulator comprises a rectification circuit configured to rectify an AC line voltage into a rectified line voltage; a pass device coupled between the rectified line voltage and a first capacitor, the pass device is configured to be turned ON or OFF according to a comparison signal indicating whether the rectified line voltage is over a threshold voltage. The first capacitor delivers an interim voltage into a converter…
CONSTANT ON-TIME SWITCHING CONVERTERS WITH SLEEP MODE AND CONTROL METHODS THEREOF
Granted: February 6, 2014
Application Number:
20140035654
A constant on-time switching converter includes a switching circuit, an on-time control circuit, a comparing circuit and a logic circuit. The switching circuit has a first switch and is configured to provide an output voltage to a load. The on-time control circuit generates an on-time control signal to control the on-time of the first switch. The comparing circuit compares the output voltage of the switching circuit with a reference signal and generates a comparison signal. The logic…
HIGH VOLTAGE SEMICONDUCTOR DEVICE AND THE ASSOCIATED METHOD OF MANUFACTURING
Granted: January 16, 2014
Application Number:
20140015017
The present disclosure discloses a high voltage semiconductor device and the associated methods of manufacturing. In one embodiment, the high voltage semiconductor device comprises: an epitaxial layer, a first low voltage well formed in the epitaxial layer; a second low voltage well formed in the epitaxial layer; a high voltage well formed in the epitaxial layer, wherein the second low voltage well is surrounded by the high voltage well; a first highly doping region formed in the first…
MICROELECTRONIC FLIP CHIP PACKAGES WITH SOLDER WETTING PADS AND ASSOCIATED METHODS OF MANUFACTURING
Granted: January 2, 2014
Application Number:
20140004662
Processes of assembling microelectronic packages with lead frames and/or other suitable substrates are described herein. In one embodiment, a method for fabricating a semiconductor assembly includes forming an attachment area and a non-attachment area on a lead finger of a lead frame. The attachment area is more wettable to the solder ball than the non-attachment area during reflow. The method also includes contacting a solder ball carried by a semiconductor die with the attachment area…
MULTI-PHASE SWITCHING-MODE POWER SUPPLY AND ASSOCIATED CONTROL METHOD
Granted: December 26, 2013
Application Number:
20130342176
The present invention discloses a multi-phase switch-mode power supply (SMPS). The multi-phase SMPS may comprise a plurality of comparing circuits and a controller. Wherein each comparing circuit comprises a first input coupled to a threshold voltage, a second input coupled to a feedback signal of the output voltage, and an output configured to provide a load indication signal. The controller may have a plurality of inputs coupled to the outputs of the comparing circuit, and a plurality…
POWER TRANSISTOR AND ASSOCIATED METHOD FOR MANUFACTURING
Granted: December 26, 2013
Application Number:
20130341715
The present disclosure discloses a lateral transistor and associated method for making the same. The lateral transistor comprises a gate formed over a first portion of a thin gate dielectric layer, and a field plate formed over a thick field dielectric layer and extending atop a second portion of the thin gate dielectric layer. The field plate is electrically isolated from the gate by a gap overlying a third portion of the thin gate dielectric layer and is electrically coupled to a…
SPLIT TRENCH-GATE MOSFET WITH INTEGRATED SCHOTTKY DIODE
Granted: December 12, 2013
Application Number:
20130328122
A split trench-gate MOSFET device and method for forming this device is disclosed. The device has a trench gate structure, comprising a shield electrode and two gate electrodes, wherein a substantial portion of shield electrode region is lower than the gate electrode region, and wherein a portion of the shield electrode region extends to the top surface between the two gate electrodes. The device further comprises a source metal layer, contacting to an initial layer, a well region, the…
MULTI-PHASE SWITCHING CONVERTER AND CONTROL METHOD THEREOF
Granted: November 21, 2013
Application Number:
20130307498
A multi-phase switching converter comprising a plurality of switching circuits, a comparing circuit and a control circuit. The comparing circuit generates a comparison signal based on a reference signal and the output voltage of the multi-phase switching converter. The control circuit can turn on the following switching circuit based on the comparison signal only after the time from the current switching circuit being turned on reaches a first time threshold or the off-time of the…
SWITCHING REGULATOR, THE CONTROL CIRCUIT AND THE METHOD THEREOF
Granted: November 21, 2013
Application Number:
20130308349
A switching regulator that decreases power loss and resolves thermal issues by jumping its switching frequency to a maximum frequency when its load reaches a peak load.
MULTI-PHASE SWITCHING CONVERTER WITH OVERLAP MODE AND CONTROL METHOD THEREOF
Granted: November 21, 2013
Application Number:
20130307503
A multi-phase switching converter and control method thereof. The multi-phase switching converter includes a plurality of switching circuits and a controller. The output terminals of the plurality of switching circuits are coupled together to provide an output voltage to a load. The controller is configured to generate a plurality of control signals to turn on the plurality of switching circuits successively. When a load current increase is detected, the controller operates in an overlap…
