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Chung-Shu
Chung-Shu Lee, Wu-Ku Industrial Park TW
| Patent application number | Description | Published |
|---|---|---|
| 20110222315 | CURRENT-SHARING POWER SUPPLY APPARATUS - 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. | 09-15-2011 |
Chung-Shu Lee, Wugu Township TW
| Patent application number | Description | Published |
|---|---|---|
| 20120019158 | Polarity-reversible dimming controller having function of switching light source - 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. | 01-26-2012 |
Chung-Shu Li, Yonghe City TW
| Patent application number | Description | Published |
|---|---|---|
| 20090322296 | Multi-chip module for power supply circuitry - A multi-chip module (MCM) for power supply circuitry integrates a controller, a driver and two power MOSFETs in a single chip to shorten the signal path between the controller and the driver. When applied to a voltage regulator, the MCM shortens the feedback paths between the current sensors and the controller, so as to reduce the loss of and interference with the feedback signals, thereby improving the efficiency of the voltage regulator and simplifying the PCB traces routing. | 12-31-2009 |
| 20100033154 | Current balance in a multi-phase power converter with constant on-time control - A multi-phase power converter with constant on-time control includes a plurality of channels to convert an input voltage into an output voltage, and each of the channels is driven by a control signal. When all channel currents of the channels are balanced, each of the control signals remains a constant on-time. When the channel currents are imbalanced, the on-times of the control signals are modulated according to the difference between each channel current and a target value for current balance between the channels. | 02-11-2010 |
| 20110057632 | Circuit and method for constant on-time control for an interleaved multiphase voltage regulator - A circuit and method are proposed for constant on-time control for an interleaved multiphase voltage regulator, which monitor the channel currents of all the channels of the interleaved multiphase voltage regulator to select one from the channels to drive and so achieve interleaved phase operation. | 03-10-2011 |