| LEADTREND TECHNOLOGY CORP. Patent applications |
| Patent application number | Title | Published |
|---|
| 20110032024 | Integrated Circuit and Related Method for Determining Operation Modes - An integrated circuit and a related method for determining an operation mode are disclosed. The exemplified integrated circuit includes a controller, a multi-function pin, and a mode determination circuit. The controller controls a power switch and is being set to operate in one of the operation modes including a first operation mode and a second operation mode. The multi-function pin is connected to an external resistor. The mode determination circuit detects a signal from the multi-function pin. The signal represents the resistance of the external resistor. If the resistance is within a first range, the controller is operated in the first operation mode. If the resistance is within a second range, the controller is operated in the second operation mode. | 02-10-2011 |
| 20090097281 | LEAKAGE-INDUCTANCE ENERGY RECYCLING CIRCUIT AND FLYBACK CONVERTER WITH LEAKAGE-INDUCTANCE ENERGY RECYCLING CIRCUIT - A flyback converter with a leakage-inductance energy recycling circuit includes a transformer and a leakage-inductance energy recycling circuit. The leakage-inductance energy recycling circuit includes a clamping circuit, an energy storage circuit, and a switch connected between the clamping circuit and the energy storage circuit. A power transistor is electrically connected to a primary winding of the transformer. The clamping circuit clamps the voltage of the power transistor at a predetermined voltage. The energy storage circuit stores the leakage-inductance energy of the primary winding. When the switch is turned off, the clamping circuit receives and stores the leakage-inductance energy of the primary winding, so as to clamp the voltage of the power transistor to a predetermined voltage; when the switch is turned on, the energy stored in the clamping circuit is stored in the energy storage circuit through the switch. | 04-16-2009 |
| 20090016413 | PSEUDO RANDOM CLOCK GENERATOR - A pseudo random clock generator includes a clock generator for generating a clock signal. A pseudo random code generator receives the clock signal and thereby generating a pseudo random code. A code limiter enables the value of the pseudo random code being unchanged for at least two periods of the clock signal. A logic gate applies a logic operation to the pseudo random code and the clock signal and thereby outputting a pseudo random clock. | 01-15-2009 |
