COPPER STRUCTURES WITH INTERMETALLIC COATING FOR INTEGRATED CIRCUIT CHIPS
Granted: December 1, 2016
Application Number:
20160351520
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…
MULTIPHASE POWER SUPPLY WITH CONSTANT ON-TIME DC-DC CONVERTERS
Granted: October 27, 2016
Application Number:
20160315538
A multiphase power supply includes several constant ON-time (COT) DC-DC converter integrated circuits (ICs), with each COT DC-DC converter IC providing an output voltage of a phase of the multiphase power supply. The COT DC-DC converter ICs are sequentially turned ON one after another in interleaved fashion. A COT DC-DC converter IC receives a control signal at a take pin and, in response, turns ON its output switch. The COT DC-DC converter IC generates another control signal at a pass…
SMART SWITCH FOR CONNECTING AN INPUT POWER SUPPLY TO A LOAD
Granted: June 23, 2016
Application Number:
20160182039
A monolithic integrated circuit (IC) switch device includes an input pin that receives an input power supply and an output pin that is connected to a load. The monolithic IC switch device includes driving circuitry that controls a switching operation of a power switch to connect and disconnect the input power supply to and from the load. A microcontroller can enable or disable the monolithic IC switch device based on indicator signals received by the microcontroller from the monolithic…
HIGH VOLTAGE ANALOG SWITCH
Granted: May 12, 2016
Application Number:
20160134199
A high voltage analog switch can be used in medical ultrasound applications. The high voltage analog switch can pass high voltage transducer excitation signals without necessarily having any high voltage power supplies. The high voltage analog switch can include three output switches, with one of the output switches having a clamp circuit for ensuring that transistors of an output switch on an input end of the high voltage analog switch remain OFF when the high voltage analog switch is…
REMOTE CONFIGURATION OF VOLTAGE REGULATOR INTEGRATED CIRCUITS
Granted: December 10, 2015
Application Number:
20150356226
A design server provides an online service for remotely configuring a voltage regulator integrated circuit (IC). A customer may employ a customer computing device to connect to the design server. The design server may receive from the customer computing device a user requirement for the voltage regulator IC. The design server may select one or more external components to configure the voltage regular IC to meet the user requirement. The design server may automatically place an order for…
MULTI-PHASE SMPS WITH LOOP PHASE CLOCKS AND CONTROL METHOD THEREOF
Granted: October 1, 2015
Application Number:
20150280560
A multi-phase SMPS has N switching circuits; a setting signal generator generating a setting signal based on an output signal of the SMPS; a clock signal generator generating a system clock signal; and a controller receiving the setting signal and the system clock signal, the controller generating N shifted phase clock signals according to the system clock signal, and the N shifted phase clock signals forming loop phase clocks, and the controller further generates N switching control…
CURRENT DETECTION AND EMULATION CIRCUIT, AND METHOD THEREOF
Granted: August 6, 2015
Application Number:
20150222171
A current detection circuit for detecting a current in a SMPS which has a first switch and a second switch; a current sensing circuit sensing a second switch current flowing through the second switch and providing a current sensing signal; and a current emulation circuit which generates a first current according to the current sensing signal and generate a second current according to the first current source, and the current emulation circuit further providing a current emulation signal…
HIGH VOLTAGE PMOS AND THE METHOD FOR FORMING THEREOF
Granted: July 2, 2015
Application Number:
20150187931
A high voltage PMOS replacing the lightly doped region of the drain region with a low voltage P-well adopted in the low voltage devices, so as to save a mask. In order to achieve the high breakdown voltage and the low on resistance, a thick gate oxide applied in the DMOS is inserted. The N-type well region surrounding the source region may be replaced by a low voltage N-well adopted in the low voltage device to further save a mask.
A SWITCHING CIRCUIT AND THE METHOD THEREOF
Granted: June 18, 2015
Application Number:
20150171855
A switching circuit having a low side driver providing a three-level low side drive signal keeps a low side power switch slightly on during a dead time between the low side power switch turn off and a high side power switch turn on, thus a current flowing through a body diode is mostly distributed to the slightly on low side power switch instead of the body diode.
SHORT PROTECTION CIRCUIT FOR POWER SWITCH AND ASSOCIATED PROTECTION METHOD
Granted: June 11, 2015
Application Number:
20150162819
A short protection circuit for protecting a power switch. The short protection circuit has a transistor and compares a differential voltage between a first end of the power switch and a second end of the power switch to a threshold voltage of the transistor only when the power switch is in an ON state; and wherein when the differential voltage is higher than the threshold voltage, the short protection circuit turns off the power switch.
FIELD EFFECT TRANSISTOR, TERMINATION STRUCTURE AND ASSOCIATED METHOD FOR MANUFATURING
Granted: May 21, 2015
Application Number:
20150137220
The present disclosure discloses a field effect transistor (“FET”), a termination structure and associated method for manufacturing. The termination structure for the FET includes a plurality of termination cells arranged substantially in parallel from an inner side toward an outer side of a termination area of the FET. Each of the termination cells comprises a termination trench and a guard ring region located underneath the bottom of the termination trench in the semiconductor…
LDMOS DEVICE WITH SHORT CHANNEL AND ASSOCIATED FABRICATION METHOD
Granted: March 26, 2015
Application Number:
20150084126
A method of fabricating an LDMOS device includes: forming a gate of the LDMOS device on a semiconductor substrate; performing tilt body implantation by implanting dopants of a first conductivity type in the semiconductor substrate using a mask, wherein the tilt body implantation is implanted at an angle from a vertical direction; performing zero tilt body implantation by implanting dopants of the first conductivity type using the same mask, wherein the zero tilt body implantation is…
BOOTSTRAP REFRESH CONTROL CIRCUIT, POWER CONVERTER AND ASSOCIATED METHOD
Granted: March 5, 2015
Application Number:
20150061611
A power converter having a bootstrap refresh control circuit and a method for controlling the power converter. The bootstrap refresh control circuit is configured to monitor a bootstrap voltage across a bootstrap capacitor and to provide an enhanced high side driving signal to a high side switch of the power converter. The bootstrap refresh control circuit is further configured to controlling the charging of the bootstrap capacitor through regulating the on and off switching of the high…
METHODS FOR DRIVING AN LED LIGHTING DEVICE AND CIRCUITS THEREOF
Granted: March 5, 2015
Application Number:
20150061543
A method for driving an LED lighting device includes receiving an input voltage from a battery unit and converting the input voltage into a driving current to drive the LED lighting device. The method further includes detecting whether the battery unit is in a low battery state. When the low battery state of the battery unit is detected, the driving current is reduced.
SWITCHING MODE POWER SUPPLY AND THE CONTROL METHOD THEREOF
Granted: February 12, 2015
Application Number:
20150043252
A switching mode power supply, having: a power switch; an energy storage component coupled to the power switch; a current sense resistor configured to generate a current sense signal; a mode select resistor configured to generate a mode select resistor; a ZCD (Zero Cross Detecting) circuit configured to generate a ZCD signal; and a control circuit configured to provide a switch control signal to control the on and off of the power switch, the control circuit having a multi-function pin…
FIELD EFFECT TRANSISTOR, TERMINATION STRUCTURE AND ASSOCIATED METHOD FOR MANUFACTURING
Granted: December 4, 2014
Application Number:
20140353748
A field effect transistor (“FET”), a termination structure and associated method for manufacturing. The FET has a plurality of active transistor cells and a termination structure. The termination structure for the FET includes a plurality of termination cells arranged substantially in parallel from an inner side toward an outer side of a termination area of the FET. Each of the termination cells comprises a termination trench lined with a termination insulation layer and filled with…
CHARGE PUMP AND METHOD OF HAVING NEGATIVE OUTPUT VOLTAGE TRACKING POSITIVE OUTPUT VOLTAGE THEREOF
Granted: December 4, 2014
Application Number:
20140354349
A method having a negative output voltage at a negative output terminal of a charge pump tracking a positive output voltage at a positive output terminal of the charge pump. The charge pump comprises a plurality of switches and each of the plurality of switches has a serially coupled resistance. The method comprises selecting the serially coupled resistance for at least one of the plurality of switches to be different to each of the other respective serially coupled resistances…
SWITCH-MODE POWER SUPPLY, CHARGING CURRENT SOURCE AND ASSOCIATED METHOD
Granted: December 4, 2014
Application Number:
20140354256
A switch-mode power supply includes a converter, a controller and a charging current. The charging current includes a logic circuit, a first current source and a second current source, to generate a charging current proportional to an input voltage of the switch-mode power supply, and also to generate a logic control signal indicative of either of two operation modes.
HIGH EFFICIENT CONTROL CIRCUIT FOR BUCK-BOOST CONVERTERS AND CONTROL METHOD THEREOF
Granted: December 4, 2014
Application Number:
20140354250
A controller used in a buck-boost converter includes a clock generator, an error amplifying circuit, a comparing circuit, a proportional sampling circuit, a logic circuit, a pulse width increasing circuit, first and second driving circuits. Based on a clock signal generated by the clock generator, the proportional sampling circuit samples the difference between a current sensing signal and a compensation signal generated by the error amplifying circuit, and generates a proportional…
LED DRIVER SYSTEM, CONTROLLER AND ASSOCIATED METHOD
Granted: December 4, 2014
Application Number:
20140354159
A LED driver system includes a LED converter converting an input voltage to an output voltage to drive a LED load via a main switch; a sensing circuit generating a feedback signal on the output terminal according to a load current through the LED load; an over-shoot detecting circuit generating an over-shoot signal according to the load current and a second reference signal; a logic circuit generating a switching signal according to a control signal and the over-shoot signal to control…
