Switching converters with adaptive constant on-time control and control methods thereof
Granted: December 26, 2023
Patent Number:
11855537
A switching converter with adaptive constant on-time control has a power switch and a control circuit. The switching converter converts an input voltage into an output voltage. When the switching converter is in a light-load state, the on-time of the power switch is controlled to be smaller than the on-time of the power switch in a normal-load state, wherein the normal-load state includes a continuous current mode (CCM) or a discontinuous current mode (DCM).
Resonant converter with multiple resonant tank circuits
Granted: December 26, 2023
Patent Number:
11855530
A resonant converter has a primary resonant tank circuit and a secondary resonant tank circuit. An inverter circuit converts an input DC voltage received by the resonant converter at an input voltage node to a pulsating signal that is fed to the primary resonant tank circuit to generate a resonant tank current that flows through a primary winding of a transformer. The resonant tank current induces current in a secondary winding of the transformer. The induced current is rectified by a…
Linear voltage regulator with stability compensation
Granted: December 19, 2023
Patent Number:
11846956
A linear voltage regulator includes a transistor, an error amplifier, a feedback circuit and a compensation circuit. The transistor has a first terminal for receiving an input voltage, a second terminal for providing an output voltage, and a control terminal. The error amplifier has a first input terminal, a second input terminal and an output terminal, wherein the first input terminal receives a reference voltage, and the output terminal is coupled to the control terminal of the…
Integrated circuit package structure and integrated circuit package unit
Granted: November 21, 2023
Patent Number:
11824001
An IC package structure including an array of package units formed into a panel-shaped package units array. Each package unit has a continuous and closed metal wall surrounding the periphery of the package unit and at least one IC chip/IC die disposed in the package unit, and wherein each IC chip/IC die has a top surface and a back surface opposite to the top surface. A panel-shaped metal layer corresponding to the panel-shaped package units array can be formed on entire back side of the…
Multiphase switching converter with total current limitation
Granted: November 7, 2023
Patent Number:
11811325
A controller for a multiphase switching converter has a voltage control circuit, a total current control circuit, a frequency divider and a plurality of sub control circuits. The voltage control circuit provides an on-time control signal based on an output voltage. The total current control circuit provides a current control signal based on a total current flowing through the plurality of switching circuits. The frequency divider receives the on-time control signal, and provides a…
Integrated circuit of a buck-boost converter with output current sensing function
Granted: November 7, 2023
Patent Number:
11811324
An integrated circuit of a buck-boost converter working in a buck mode with a buck power switching cycle, a boost mode with a boost power switching cycle or a buck-boost mode with a buck-boost power switching cycle. The integrated circuit integrates a first power switch, a second power switch, a third power switch and a fourth power switch, and an output current sensing circuit. The buck-boost power switching cycle consists of a first buck-boost phase, a second buck-boost phase and a…
Power system and method for adjusting a release voltage of a bi-directional converter
Granted: October 24, 2023
Patent Number:
11799314
A method for adjusting a release voltage of a power system. The power converter has a power input terminal for receiving a bus voltage, a first resistor coupled between the power input terminal and a sense terminal, a second resistor coupled between the sense terminal and a reference ground, and a bi-directional converter having a first terminal coupled to the power input terminal. The bi-directional converter converts the bus voltage received at the first terminal to a first voltage at…
Hybrid DC-DC converter
Granted: October 24, 2023
Patent Number:
11799383
A hybrid DC-DC converter includes a converter circuit, a bridge circuit with a bridge path that includes a winding of a transformer, and another bridge circuit with a bridge path that includes another winding of the transformer. Current through the bridge path of the other bridge circuit flows through the converter circuit in one direction and bypasses the converter circuit in the other direction. The converter circuit can operate in buck, boost, or buck-boost mode.
Multi-phase voltage converter with identification codes assignment
Granted: October 17, 2023
Patent Number:
11791705
A multi-phase voltage converter has a plurality of integrated circuits (ICs), and a controller. Each IC has a power switch, a monitoring pin and a current sense pin. The power switch is controlled to convert an input voltage to an output voltage. The current sense pin is capable of providing a current sense signal representative of a current flowing through the power switch. The controller is capable of providing a clock signal via the monitoring pin, and provides a plurality of data…
Switch control circuit and power converter comprising the same
Granted: October 17, 2023
Patent Number:
11791708
A power converter includes a switch control circuit for driving a high side switch of the power converter comprising the high side switch and a low side switch connected in series. The switch control circuit may have a first terminal for receiving a low side switch driving signal of the low side switch, a second terminal used as a reference ground terminal of the switch control circuit, and a third terminal used as an output terminal to provide a high side switch driving signal, the…
Multi-port battery charge and discharge system
Granted: October 10, 2023
Patent Number:
11784499
A multi-port battery charge and discharge system used for battery pack charge and discharge. The multi-port battery charge and discharge system has a plurality of voltage converting circuits, each of which can operate in a charge mode to supply load and charge a battery pack or in a discharge mode to supply power sinks. The multi-port battery charge and discharge system further has at least one switch module providing an additional current signal to charge the battery pack.
Boost off time adaptive adjustment unit and power converter comprising the same
Granted: October 3, 2023
Patent Number:
11777405
A power converter, a boost off time adaptive adjustment unit and a boost cycle short circuit protection module for controlling an off time of a boost cycle of the power converter. The boost off time adaptive adjustment unit is adapted to generate an off time control signal based at least on an input voltage and an output voltage of the power converter to regulate the off time of the boost cycle to change in an opposite direction to the output voltage when the power converter is operating…
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…
Power switch device driver with energy recovering and the method thereof
Granted: September 26, 2023
Patent Number:
11770121
A power switch device driver with energy recovery is discussed. The power switch device adopts four switches and one inductor with appropriate control to insure the switching speed and save the power loss.
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…
