Patents by Inventor Chung-Shu Lee
Chung-Shu Lee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230178490Abstract: A power module includes first and second electrode terminals adapted to electrically connect to a power source, a first switch element, a second switch element, a first Kelvin source pin, and a second Kelvin source pin. The first switch element is electrically connected to the first electrode terminal The second switch element is electrically connected between the first switch element and the second electrode terminal and includes a drain and a source electrically connected to the first switch element and the second electrode terminal respectively. The first Kelvin source pin is electrically connected to the source of the second switch element and is adapted to receive a gate drive signal for driving the second switch element. The second Kelvin source pin is electrically connected to the source of the second switch element and is configured to be electrically connected to a snubber circuit.Type: ApplicationFiled: December 3, 2021Publication date: June 8, 2023Inventors: Yingying Gui, Yan Zhou, Tsai-Sheng Lin, Gerardo Jimenez Orozco, Ze Wang, Richard Joseph Hampo, Ajay Vasudeo Patwardhan, Chung-Shu Lee
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Patent number: 10447060Abstract: A charging device includes a main control circuit, a connecting interface, a power supply circuit and a detecting circuit. When an energy storage element connects to the charging device, the connecting interface is coupled to two terminals of a temperature control element. The power supply circuit is coupled to the connecting interface and the main control circuit. The detecting circuit is coupled to the connecting interface. When the energy storage element connects to the charging device, the detecting circuit generates a detecting signal being used to trigger the power supply circuit to provide a main operating voltage to the main control circuit. When temperature of the energy storage element exceeds a threshold, the temperature control element makes the detecting circuit not to generate the detecting signal, so the power supply circuit ceases to provide the main operating voltage to the main control circuit.Type: GrantFiled: October 21, 2016Date of Patent: October 15, 2019Assignee: CHICONY POWER TECHNOLOGY CO., LTD.Inventors: Shih-Chang Lee, Chien-Hung Chen, Chih-Chung Yen, Chung-Shu Lee
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Patent number: 10277137Abstract: A power conversion control circuit, which is applied to a flyback converter having a main switch, includes at least one bypass switch, a half-bridge power control unit, and an active-clamp control unit. The half-bridge power control unit is coupled to the main switch. The active-clamp control unit is coupled to the half-bridge power control unit and the main switch. When the flyback converter is operated in light-load condition, the active-clamp control unit turns on the at least one bypass switch, the half-bridge power control unit is coupled to the ground through the at least one bypass switch, the active-clamp control unit is coupled to the ground through the main switch, and the active-clamp control unit provides a low-side control signal to switch the main switch. Accordingly, it is to make the flyback converter have considerable power saving and energy saving in light-load condition.Type: GrantFiled: April 30, 2018Date of Patent: April 30, 2019Assignee: CHICONY POWER TECHNOLOGY CO., LTD.Inventors: Shu-Hao Wu, Fa-Ping Wang, Chung-Shu Lee
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Patent number: 10243384Abstract: A battery charge apparatus and a charge system are disclosed. The charge apparatus includes first and second charge module connected to each other. The first charge module is connected to an auxiliary power, makes a processor thereof generate a charge-unit-address code for the charge unit thereof, and turns on an auxiliary switch thereof for transmitting the auxiliary power to the second charge module for activated the second charge module. The second charge module then sends a charge-module-address request to the first charge module to ask for a charge-module-address code. Thereafter, the first charge module performs charge procedure and informs the second charge module to perform charge procedure when battery connected to the first charge module is fully charged. The second charge module then performs charge procedure and sends fully charged information to the first charge module when the battery connected to the second charge module is fully charged.Type: GrantFiled: October 12, 2016Date of Patent: March 26, 2019Assignee: CHICONY POWER TECHNOLOGY CO., LTD.Inventors: Chien-Hung Chen, Chao-Ching Hsu, Chu-Yen Wu, Chung-Shu Lee
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Patent number: 10103560Abstract: A charger with a wide range output voltage includes a voltage output side, a first constant voltage output unit, a voltage modulation unit and a load voltage detection unit. The first constant voltage output unit generates a first constant voltage. The load voltage detection unit detects a load voltage and transmits the load voltage to the voltage modulation unit. According to the load voltage and a load charging voltage requirement, the voltage modulation unit generates a modulation voltage and transmits the modulation voltage to the first constant voltage output unit. The first constant voltage output unit transmits the first constant voltage and the modulation voltage to the voltage output side. Moreover, the modulation voltage is an n times of a second constant voltage. The n is a positive number.Type: GrantFiled: March 3, 2017Date of Patent: October 16, 2018Assignee: CHICONY POWER TECHNOLOGY CO., LTD.Inventors: Chien-Hung Chen, Chao-Ching Hsu, Chih-Feng Shen, Chung-Shu Lee
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Patent number: 10020133Abstract: A power switching apparatus includes a detection circuit, a control circuit and an auxiliary power circuit. The detection circuit comprises a voltage adjusting unit, a delay unit, a first switch unit and an isolation unit. The auxiliary power circuit comprises an auxiliary power input side and an output side. When a main power supplies power normally or the main power stops supplying power but the delay unit continues working in a setting time, the first switch unit is turned on. The isolation unit sends a first signal to the control circuit. The auxiliary power input side does not conduct to the output side. When the main power stops supplying power and the delay unit stops working, the first switch unit is turned off. The isolation unit does not send the first signal to the control circuit. The auxiliary power input side conducts to the output side.Type: GrantFiled: March 29, 2016Date of Patent: July 10, 2018Assignee: Chicony Power Technology Co., Ltd.Inventors: Jhe-Yu Lin, Chin-Hsing Tsai, Chien-Hung Chen, Chung-Shu Lee
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Publication number: 20180166899Abstract: A charger with a wide range output voltage includes a voltage output side, a first constant voltage output unit, a voltage modulation unit and a load voltage detection unit. The first constant voltage output unit generates a first constant voltage. The load voltage detection unit detects a load voltage and transmits the load voltage to the voltage modulation unit. According to the load voltage and a load charging voltage requirement, the voltage modulation unit generates a modulation voltage and transmits the modulation voltage to the first constant voltage output unit. The first constant voltage output unit transmits the first constant voltage and the modulation voltage to the voltage output side. Moreover, the modulation voltage is an n times of a second constant voltage. The n is a positive number.Type: ApplicationFiled: March 3, 2017Publication date: June 14, 2018Inventors: Chien-Hung CHEN, Chao-Ching HSU, Chih-Feng SHEN, Chung-Shu LEE
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Publication number: 20180026468Abstract: A charging device includes a main control circuit, a connecting interface, a power supply circuit and a detecting circuit. When an energy storage element connects to the charging device, the connecting interface is coupled to two terminals of a temperature control element. The power supply circuit is coupled to the connecting interface and the main control circuit. The detecting circuit is coupled to the connecting interface. When the energy storage element connects to the charging device, the detecting circuit generates a detecting signal being used to trigger the power supply circuit to provide a main operating voltage to the main control circuit. When temperature of the energy storage element exceeds a threshold, the temperature control element makes the detecting circuit not to generate the detecting signal, so the power supply circuit ceases to provide the main operating voltage to the main control circuit.Type: ApplicationFiled: October 21, 2016Publication date: January 25, 2018Inventors: Shih-Chang LEE, Chien-Hung CHEN, Chih-Chung YEN, Chung-Shu LEE
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Publication number: 20170346327Abstract: A battery charge apparatus and a charge system are disclosed. The charge apparatus includes first and second charge module connected to each other. The first charge module is connected to an auxiliary power, makes a processor thereof generate a charge-unit-address code for the charge unit thereof, and turns on an auxiliary switch thereof for transmitting the auxiliary power to the second charge module for activated the second charge module. The second charge module then sends a charge-module-address request to the first charge module to ask for a charge-module-address code. Thereafter, the first charge module performs charge procedure and informs the second charge module to perform charge procedure when battery connected to the first charge module is fully charged. The second charge module then performs charge procedure and sends fully charged information to the first charge module when the battery connected to the second charge module is fully charged.Type: ApplicationFiled: October 12, 2016Publication date: November 30, 2017Inventors: Chien-Hung CHEN, Chao-Ching HSU, Chu-Yen WU, Chung-Shu LEE
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Publication number: 20170287655Abstract: A power switching apparatus includes a detection circuit, a control circuit and an auxiliary power circuit. The detection circuit comprises a voltage adjusting unit, a delay unit, a first switch unit and an isolation unit. The auxiliary power circuit comprises an auxiliary power input side and an output side. When a main power supplies power normally or the main power stops supplying power but the delay unit continues working in a setting time, the first switch unit is turned on. The isolation unit sends a first signal to the control circuit. The auxiliary power input side does not conduct to the output side. When the main power stops supplying power and the delay unit stops working, the first switch unit is turned off. The isolation unit does not send the first signal to the control circuit. The auxiliary power input side conducts to the output side.Type: ApplicationFiled: March 29, 2016Publication date: October 5, 2017Inventors: Jhe-Yu LIN, Chin-Hsing TSAI, Chien-Hung CHEN, Chung-Shu LEE
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Patent number: 9735692Abstract: An adapter includes a rectifying unit, a power factor correction unit, a standby circuit, a load-connecting detection circuit, a first power conversion circuit, a second power conversion circuit and an auxiliary voltage control circuit. When a load apparatus is connected to the adapter, a first ground side of the first power conversion circuit is short-circuited to a second ground side of the second power conversion circuit, so that the load-connecting detection circuit is turned on and sends out a first signal. After the auxiliary voltage control circuit receives the first signal, the auxiliary voltage control circuit is turned on to drive the first power conversion circuit and the second power conversion circuit, so that the first power conversion circuit and the second power conversion circuit start to convert a first voltage into a first output voltage and a second output voltage.Type: GrantFiled: August 1, 2016Date of Patent: August 15, 2017Assignee: CHICONY POWER TECHNOLOGY CO., LTD.Inventors: Jung-Chang Lu, Chien-Hung Chen, Fa-Ping Wang, Chung-Shu Lee
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Publication number: 20150061514Abstract: A LED driving device is electrically connected to a voltage power source and a plurality of LED strings. The LED driving device includes a constant-voltage outputting module, a rectifying unit, and a constant-current controlling unit. The constant-voltage outputting module is electrically connected to the voltage power source and includes a switching unit, a resonant unit, a converting unit, and a power-balancing unit. The resonant unit is electrically connected to the switching unit. The converting unit includes a primary winding, two first secondary windings, and a second secondary winding. The primary winding is electrically connected to the resonant unit. The power-balancing unit includes a balancing converter including two balancing windings electrically connected to the first secondary windings. The rectifying unit is electrically connected to the power-balancing unit and the LED strings, the constant-current controlling unit is electrically connected to the second secondary winding and the LED strings.Type: ApplicationFiled: May 5, 2014Publication date: March 5, 2015Applicant: Chicony Power Technology Co., Ltd.Inventors: Chien-Hung CHEN, Jhe-Yu LIN, Chih-Wei HSU, Chung-Shu LEE
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Patent number: 8670251Abstract: A regulating apparatus with soft-start and fast-shutdown function is applied to a voltage-supplying apparatus. The regulating apparatus includes a soft-start and fast-shutdown circuit, a regulating circuit, and a ground circuit. When voltages are supplied from the voltage-supplying apparatus to the soft-start and fast-shutdown circuit, the regulating circuit, and the ground circuit, the ground circuit is connected to ground, so that the starting time of the regulating circuit is delayed by the soft-start and fast-shutdown circuit. When voltages are not supplied from the voltage-supplying apparatus to the soft-start and fast-shutdown circuit, the regulating circuit, and the ground circuit, the ground circuit is not connected to ground, so that the regulating circuit is shut down fast by the soft-start and fast-shutdown circuit.Type: GrantFiled: February 7, 2012Date of Patent: March 11, 2014Assignee: Chicony Power Technology Co., Ltd.Inventors: Jung-Chang Lu, Chi-Shin Chu, Chung-Shu Lee
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Publication number: 20130200876Abstract: A regulating apparatus with soft-start and fast-shutdown function is applied to a voltage-supplying apparatus. The regulating apparatus includes a soft-start and fast-shutdown circuit, a regulating circuit, and a ground circuit. When voltages are supplied from the voltage-supplying apparatus to the soft-start and fast-shutdown circuit, the regulating circuit, and the ground circuit, the ground circuit is connected to ground, so that the starting time of the regulating circuit is delayed by the soft-start and fast-shutdown circuit. When voltages are not supplied from the voltage-supplying apparatus to the soft-start and fast-shutdown circuit, the regulating circuit, and the ground circuit, the ground circuit is not connected to ground, so that the regulating circuit is shut down fast by the soft-start and fast-shutdown circuit.Type: ApplicationFiled: February 7, 2012Publication date: August 8, 2013Inventors: Jung-Chang LU, Chi-Shin Chu, Chung-Shu Lee
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Patent number: 8471483Abstract: A multi-channel LED driving system includes a power adapter, a rectifying and filtering unit, a plurality of LED strings, and a plurality of linear regulators, a CC/CV controller, an optically coupled isolator and a PWM controller. The CC/CV controller detects the conducting currents flowing though the LED strings and DC voltage source outputting from the rectifying and filtering unit, and provides voltage compensation of the power adaptor. In addition, the linear regulators slightly modulate the current difference between the LED strings to achieve current-sharing control, thus stabilize the illuminating brightness generating by the LED.Type: GrantFiled: April 20, 2011Date of Patent: June 25, 2013Assignee: Chicony Power Technology Co., Ltd.Inventors: Chung-Shu Lee, Jung-Chang Lu, Fa-Ping Wang, Kun-Yu Hsieh
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Publication number: 20120268021Abstract: A multi-channel LED driving system includes a power adapter, a rectifying and filtering unit, a plurality of LED strings, and a plurality of linear regulators, a CC/CV controller, an optically coupled isolator and a PWM controller. The CC/CV controller detects the conducting currents flowing though the LED strings and DC voltage source outputting from the rectifying and filtering unit, and provides voltage compensation of the power adaptor. In addition, the linear regulators slightly modulate the current difference between the LED strings to achieve current-sharing control, thus stabilize the illuminating brightness generating by the LED.Type: ApplicationFiled: April 20, 2011Publication date: October 25, 2012Inventors: Chung-Shu LEE, Jung-Chang LU, Fa-Ping WANG, Kun-Yu HSIEH
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Patent number: 8179222Abstract: A transformer with a conductive plate winding structure includes a hollow core pillar, a partition, a conductive plate winding structure, and an insulating layer. The partition is fixed at the hollow core pillar for partitioning the hollow core pillar into two winding areas. The conductive plate winding structure is sheathed to the hollow core pillar and disposed at one of the two winding areas, and comprised of a plurality of conductive plates, and each conductive plate includes a ring having an opening and two conductive terminals extended out from the opening of the ring. The insulating layer is clamped between any two adjacent conductive plates, such that the conductive plates are stacked to from a winding for increasing the rated normal current and enhancing the assembling convenience.Type: GrantFiled: November 10, 2009Date of Patent: May 15, 2012Assignee: Chicony Power Technology Co., Ltd.Inventors: Chung-Shu Lee, Shih-Chang Lee, Chi-Hsien Weng, Fu-Teng Hou
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Patent number: 8159845Abstract: A current-sharing power supply apparatus is applied to regulate voltage level of an input DC voltage, and the regulated DC voltage is stabilized in a predetermined voltage to be used on rear-end circuits. The current-sharing power supply apparatus includes a square-wave generating circuit, a rectifier circuit, a conversion circuit, a rectifier circuit, a filter circuit, a first output terminal, and a second output terminal. The current-sharing power supply apparatus provides two output voltages with a multiple relation from the first output terminal and the second output terminal, respectively.Type: GrantFiled: March 10, 2010Date of Patent: April 17, 2012Assignee: Chicony Power Technology Co. Ltd.Inventors: Chung-Shu Lee, Shih-Chang Lee, Chien-An Chen, Jhe-Yu Lin
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Publication number: 20120074865Abstract: A light emitting diode (LED) driving device is used to drive an LED module. A conductive current flows through the LED module when the LED module is driven. The LED driving device includes a driving-controlling unit and a current-regulating unit. The driving-controlling unit is driven by a controllable current. The current-regulating unit is electrically connected to the LED module and the driving-controlling unit. The current-regulating unit divides the branch of the conductive current into two branches, and controls the current flowing through one of the branches to be proportional to the controllable current. Therefore, the current-regulating unit provides a stable current to the driving-controlling unit and prevents the driving-controlling unit from an overcurrent damage.Type: ApplicationFiled: September 26, 2010Publication date: March 29, 2012Inventors: Chung-Shu LEE, Chien-An Chen, Jhe-Yu Lin
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Publication number: 20120019158Abstract: A polarity-reversible dimming controller having function of switching light source has a power supply module and a dimming control module. The dimming control module receives an external PWM dimming signal to control a feedback signal of the power supply module so as to dim or power on/off an LED lamp. The dimming control module has an output current switching circuit, a switch control circuit and a dimming control circuit. The output current switching circuit performs a PWM control over a current outputted from the power supply module by using the external PWM dimming signal to maintain chromacity of the LED lamp as a constant. The switch control circuit turns off the PWM controller to enter a standby mode for saving power once the PWM dimming signal exceeds a threshold value. As a full-wave rectification is performed on the PWM dimming signal, the polarity match issue upon assembling can be disregarded.Type: ApplicationFiled: July 22, 2010Publication date: January 26, 2012Inventors: Chung-Shu Lee, Shih-Chang Lee, Chih-Kuan Lin, Chao-Ching Hsu