Resonant converter with precise feedback control and control method thereof
Granted: September 26, 2023
Patent Number:
11770069
A controller used in a resonant converter having a switching circuit and a resonant tank. The switching circuit has a high side switch and a low side switch. The controller has a feedback processing circuit for providing a reference signal based on a feedback signal. The reference signal changes at a first slope based on the feedback signal when the feedback signal is higher than a first voltage threshold, and the reference signal changes at a second slope based on the feedback signal…
Field-plate trench FET and associated method for manufacturing
Granted: June 27, 2023
Patent Number:
11688774
A field-plate trench FET having a drain region, an epitaxial layer, a source region, a gate conductive layer formed in a trench, a field-plate dielectric layer formed on vertical sidewalls of the trench, a well region formed below the trench, a source contact and a gate contact. When the well region is in direct physical contact with the gate conductive layer, the field-plate trench FET can be used as a normally-on device working depletion mode, and when the well region is electrically…
Vertical transistor structure with buried channel and resurf regions and method of manufacturing the same
Granted: June 20, 2023
Patent Number:
11682722
The present disclosure describes vertical transistor device and methods of making the same. The vertical transistor device includes substrate layer of first conductivity type, drift layer of first conductivity type formed over substrate layer, body region of second conductivity type extending vertically into drift layer from top surface of drift layer, source region of first conductivity type extending vertically from top surface of drift layer into body region, dielectric region…
Inductors with magnetic core parts of different materials
Granted: June 20, 2023
Patent Number:
11682515
An inductor has one or more wires and a multipart magnetic core. The multipart magnetic core has magnetic core parts that are adjacent and magnetically coupled. The inductor provides an inductance of at least 40 nH for currents greater than 1 A and less than 60 A, and at least 20 nH for currents of at least 60 A.
Panel level metal wall grids array for integrated circuit packaging
Granted: June 6, 2023
Patent Number:
11670600
A panel-shaped metal wall grids array for panel level IC packaging and associated manufacturing method. Each metal wall grid in the metal wall grids array has a continuous and closed metal wall of a predetermined wall height. The metal wall grids are connected to form a monolithic panel through a plurality of metal connecting portions. When the panel-shaped metal wall grids array is used for panel level IC packaging, at least one IC chip/IC die is disposed in each metal wall grid with a…
3-D package structure for isolated power module and the method thereof
Granted: May 16, 2023
Patent Number:
11652029
A 3-D package structure for isolated power module is discussed. The package structure has metal trace in a support layer (e.g. a substrate board), which is covered by two magnetic films from both sides, thus an effective transformer is formed. An IC die which contains a voltage regulator is stacked above the support layer, which significantly reduces the package size.
Trans-inductor voltage regulator with averaging inductor DCR current sensing
Granted: May 2, 2023
Patent Number:
11641163
A trans-inductor voltage regulator (TLVR) has regulator blocks and transformers. Secondary windings of the transformers are connected in series with a compensation inductor to form a trans-inductor loop, which is connected to the output voltage of the TLVR instead of to ground. Primary windings of the transformers serve as output inductors of the regulator blocks. The inductance of each output inductor and the output inductance of the TLVR are input to an averaging network of an…
Adaptive on-time control for four-switch switching converter
Granted: April 25, 2023
Patent Number:
11637496
A switching converter has four switches and a control circuit. The control circuit provides a first drive signal to control a first switch and a second drive signal to control a second switch based on a first set signal, and provides a third drive signal to control the third switch and a fourth drive signal to control the fourth switch based on a second set signal. When an output voltage is larger than an input voltage, an on-time period of the third switch is adaptively adjusted…
Position sensing system with improved accuracy and the method thereof
Granted: April 18, 2023
Patent Number:
11630167
A position sensing system has a trim unit to trim hall voltages generated by a first sensor and a second sensor in response to an excitation current, to compensate a non-orthogonality of the first sensor and the second sensor.
Switching converter with low quiescent current and control circuit thereof
Granted: April 4, 2023
Patent Number:
11621636
A control circuit for controlling a switching converter having a low quiescent current. The control circuit has an error amplifying circuit, an on time generator, a first comparing circuit and a second comparing circuit. When the switching converter operates in a light load operation mode, the error amplifying circuit and the on time generator are deactivated. Meanwhile, the first comparing circuit compares a current sensing signal indicative of inductor current with a current reference…
Switching converter with low quiescent current and control circuit thereof
Granted: April 4, 2023
Patent Number:
11621636
A control circuit for controlling a switching converter having a low quiescent current. The control circuit has an error amplifying circuit, an on time generator, a first comparing circuit and a second comparing circuit. When the switching converter operates in a light load operation mode, the error amplifying circuit and the on time generator are deactivated. Meanwhile, the first comparing circuit compares a current sensing signal indicative of inductor current with a current reference…
Bi-directional buffer having a low bias voltage and a fast transient response
Granted: March 28, 2023
Patent Number:
11616499
A bi-directional buffer for applications using in an I2C or SMBUS or other bus systems. The bi-directional buffer has an input terminal to receive an input voltage signal and an output terminal for providing an output voltage signal, and the output voltage signal follows the input voltage signal. The output voltage signal is regulated to have a first bias voltage greater than the input voltage signal by a first operational amplifier, or to have a second bias voltage greater than the…
Multi-phase voltage converter with individual phase temperature reporting
Granted: March 28, 2023
Patent Number:
11616444
A multi-phase voltage converter has a plurality of integrated circuits (ICs), and a controller. Each IC has a control pin to receive a control signal, a monitoring pin and a temperature sensing circuit, the controller has a monitoring pin connected to the monitoring pin of each of the plurality of ICs to receive a monitoring signal. The temperature sensing circuit is connected to or disconnected from the monitoring pin of the corresponding one of the plurality of ICs in response to the…
Integrated circuit package structure, integrated circuit package unit and associated packaging method
Granted: March 28, 2023
Patent Number:
11616017
An IC package structure and an IC package unit are disclosed. The IC package includes an array of metal wall grids formed into a panel, each one of the metal wall grids having a continuous and closed metal wall to surround an IC package unit with at least one IC chip/IC die disposed therein. Each IC chip/IC die has a top surface with a plurality of metal pads formed thereon. A panel-shaped metal layer is formed on entire back side of the panel of the array of metal wall grids and bonded…
Clock self-testing method and associated circuit
Granted: March 21, 2023
Patent Number:
11609271
A clock self-testing method and circuit. The clock self-testing method includes introducing a first clock signal and a second clock signal, counting cycles of the first clock signal and the second clock signal respectively beginning at the same moment, and if one of the number of cycles of the first clock signal being counted and the number of cycles of the second clock signal being counted is equal to N, determining whether the remained number of cycles is in a count range from M to N.…
Driving circuit with EMI reduction
Granted: February 14, 2023
Patent Number:
11581803
A driving circuit providing a driving signal at a driving terminal to drive a power switch. The driving signal has a first driving period and a second driving period. Both the first driving period and the second driving period have a first driving time interval. The driving circuit has a first equivalent on resistor established during the first driving time interval and located between a first voltage node and the driving terminal. The first equivalent on resistor has a first equivalent…
Switching mode power supply preventing false triggering of a switch
Granted: January 24, 2023
Patent Number:
11563374
A switching mode power supply preventing a first switch from being falsely triggered. The switching mode power supply detects a peak of an input signal and starts timing a period of time since the arrival of the peak of the input signal is detected. The first switch starts performing the on and off switching operations when the period of time expires.
Switching mode power supply preventing false triggering of a switch
Granted: January 24, 2023
Patent Number:
11563374
A switching mode power supply preventing a first switch from being falsely triggered. The switching mode power supply detects a peak of an input signal and starts timing a period of time since the arrival of the peak of the input signal is detected. The first switch starts performing the on and off switching operations when the period of time expires.
Single sided channel mesa power junction field effect transistor
Granted: January 3, 2023
Patent Number:
11545585
Junction field effect transistors (JFETs) and related manufacturing methods are disclosed herein. A disclosed JFET includes a vertical channel region located in a mesa and a first channel control region located on a first side of the mesa. The first channel control region is at least one of a gate region and a first base region. The JEFT also includes a second base region located on a second side of the mesa and extending through the mesa to contact the vertical channel region. The…
Controller for driving a power switch in slave phase of a multiphase power converter and power converter comprising the same
Granted: January 3, 2023
Patent Number:
11545903
A power converter includes a controller for driving a power switch in one phase of a plurality of phases of the power converter. The controller may have a first terminal for receiving an input switch driving signal which is used to drive a power switch in another phase of the power converter, and a second terminal for providing an output switch driving signal to drive the power switch in the one phase. The controller draws power from the input switch driving signal received at the first…
