| Hangzhou Silergy Semiconductor Technology LTD Patent applications |
| Patent application number | Title | Published |
|---|
| 20110316509 | Start-up circuit and method thereof - Methods and circuits related to power regulator start-up are disclosed. In one embodiment, a start-up circuit can include: (i) a delay circuit having a resistor and a capacitor, where the capacitor is coupled between ground and a common node; and (ii) a control chip that receives a reference voltage, and includes an input pin coupled to an input source, an output pin supplying power for a device, and a multiplexed pin coupled to the resistor at the common node to receive an enable signal. The start-up circuit outputs an electrical signal at the output pin based on a comparison of a voltage at the multiplexed pin against the reference voltage, and after a delay time determined by the capacitor and the reference voltage. The voltage at the multiplexed pin can increase continuously with a rising slope determined by input current flowing through the multiplexed pin during a start-up process. | 12-29-2011 |
| 20110254143 | Chip package structure and method of making the same - Methods and structures related to packaging a chip are disclosed. In one embodiment, a chip package structure includes: (i) a chip having a plurality of first and second contact pads thereon; (ii) a lead frame having a plurality of pins for external connection to the package structure, where the chip is disposed on the lead frame; (iii) a plurality of first bonding wires for connecting the first contact pads to the lead frame; and (iv) a plurality of second bonding wires for connecting the second contact pads to the plurality of pins on the lead frame. | 10-20-2011 |
| 20110218692 | Hybrid controlling and driving circuit and method thereof - Methods, circuits, apparatus, and systems related to a hybrid driving and controlling circuit are disclosed. In one embodiment, a hybrid driving and controlling circuit in a double power supply system includes first and second power supplies and at least one load, and the circuit can include: (i) a controller coupled to a hybrid switcher that enables energy transfer from the first and second power supplies; (ii) when a determined energy of the first power supply is sufficient, the controller can control the hybrid switcher to transfer energy from the first power supply to the second power supply; and (iii) when the determined energy of the first power supply is insufficient, the controller can control the hybrid switcher to transfer energy from the second power supply to the at least one load. | 09-08-2011 |
| 20110215782 | Power regulator and controlling method thereof - Methods and circuits related to power regulation are disclosed. In one embodiment, a power regulator for converting an input electrical signal to an output electrical signal to supply power to a load, can include: (i) a power stage having switching devices and a filter; (ii) a regulation signal generator for the switching devices that includes a feedback circuit and a PWM, the feedback circuit receiving an output signal from the power stage, the PWM receiving an output from the feedback circuit, and generating a PWM control signal; (iii) a constant time generator receiving the PWM control signal and generating a constant time signal based on the PWM control signal duty cycle; and (iv) a logic/driving circuit receiving the PWM control signal and the constant time signal, and controlling operation of the switching devices to modulate the output signal from the power stage, and maintaining a pseudo constant operation frequency. | 09-08-2011 |
