9 patents
Utility
Inductor Current Emulation for Output Current Monitoring
25 Mar 21
A multi-phase power supply includes a plurality of phase controllers each driving a first terminal of a respective inductor alternatively between an input voltage and a ground voltage to regulate an output voltage in a work mode, keeping the first terminal of the respective inductor in a high impedance state during a non-work mode, having an input for receiving an enable signal for selecting between the work mode and the non-work mode, and generating a current monitor signal to represent a current through the respective inductor during both the work mode and the non-work mode, and a controller coupled to each phase controller for selectively enabling respective ones of the phase controllers in response to a load demand, receiving the current monitor signal from each phase controller, and selectively shutting down the multi-phase power supply when a total of current monitor signals from the phase controller exceeds a threshold.
Enzhu LIANG, Kaiwei YAO, Ming GU
Filed: 2 Dec 20
Utility
Battery Charge Termination Voltage Reduction
29 Jul 20
This document discusses, among other things, apparatus, systems, and methods to prevent a voltage of a charging battery from exceeding a voltage threshold, including receiving charging information from a battery and controlling an output current of a travel adapter, including adjusting the received battery current information using a load current to prevent the voltage of the battery from exceeding a voltage threshold, and providing output current limit information to the travel adapter using the adjusted battery current information.
James A. MEACHAM, II, Robert A. CARD
Filed: 15 Apr 20
Utility
Substrate Interposer on a Leadframe
8 Jul 20
In one general aspect, a device can include a leadframe including at least one of an external input terminal or an external output terminal, an interposer made of an insulating material, and a redistribution layer coupled to the interposer and made of a conductive material.
Elsie Agdon CABAHUG, Marie Clemens Ypil QUINONES, Maria Cristina ESTACIO, Romel Nogas MANATAD, Chung-Lin WU, Jerome TEYSSEYRE
Filed: 7 Jan 20
Utility
Control Circuit and Method Therefor
22 Apr 20
In one embodiment, a power supply controller, or alternately a semiconductor device having a power supply controller, may have a first circuit configured to form a sense signal that is representative of a signal from an auxiliary winding of a transformer.
Zhibo TAO, Chih-Hsien HSIEH, Yue-Hong TANG
Filed: 16 Dec 19
Utility
Led Drive Circuit with a Programmable Input for Led Lighting
1 Apr 20
An LED (Light Emitting Diode) drive circuit includes a magnetic device, a power transistor, a current-sense resistor, and a controller.
Ta-Yung YANG, Chuh-Ching LI, Ming-Chieh LEE, Kuo-Hsien HUANG
Filed: 2 Dec 19
Utility
Packaged Semiconductor Devices with Laser Grooved Wettable Flank and Methods of Manufacture
11 Mar 20
In a general aspect, a method for producing a packaged semiconductor device can include coupling a semiconductor device to a leadframe structure having a signal lead that is electrically coupled with the semiconductor device.
Aira Lourdes VILLAMOR, Erwin Victor CRUZ, Geraldine SUICO, Silnore SABANDO
Filed: 11 Nov 19
Utility
Charge Pump Circuit for Providing Voltages to Multiple Switch Circuits
8 Jan 20
A charge pump circuit generates a charge pump voltage that powers a bias circuit.
Lei HUANG
Filed: 15 Sep 19
Utility
Led Drive Circuit with a Programmable Input for Led Lighting
13 Nov 19
An LED drive circuit includes a controller, generating a switching signal to switch a magnetic device that receives an input voltage derived from an input of the LED drive circuit, for generating an output current to drive at least a LED.
Ta-Yung YANG, Chuh-Ching LI, Ming-Chieh LEE, Kuo-Hsien HUANG
Filed: 24 Jul 19
Utility
Switch Mode Power Supply with Ramp Generator for Wide Frequency Range Pulse Width Modulator or the Like
23 Oct 19
A switch mode power supply includes an error amplifier, an oscillator, a pulse width modulation logic circuit, and an output stage.
Hua ZHU, Kaiwei YAO
Filed: 1 Jul 19
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