1
John Robert Shannon, James Copland Moyer, Michael Ren Hsing: Apparatus for controlling a discharge lamp in a backlighted display. Monolithic Power Systems, Blakely Sokoloff Taylor & Zafman, September 5, 2000: US06114814 (115 worldwide citation)

The described DC to AC inverter efficiently controls the amount of electrical power used to drive a cold cathode fluorescent lamp (CCFL). The output is a fairly pure sine wave which is proportional to an input control voltage. The output waveform purity is ensured by driving a symmetrical rectangula ...


2
John Robert Shannon, James Copland Moyer, Michael Ren Hsing: Method and apparatus for controlling a discharge lamp in a backlighted display. Monolithic Power Systems, Blakely Sokoloff Taylor & Zafman, November 13, 2001: US06316881 (67 worldwide citation)

The described DC to AC inverter efficiently controls the amount of electrical power used to drive a cold cathode fluorescent lamp (CCFL). The output is a fairly pure sine wave which is proportional to an input control voltage. The output waveform purity is ensured by driving a symmetrical rectangula ...


3
John Robert Shannon, James Copland Moyer, Michael Ren Hsing: Method and apparatus for controlling a discharge lamp in a backlighted display. Monolithic Power Systems, Perkins Coie, October 14, 2003: US06633138 (65 worldwide citation)

The described DC to AC inverter efficiently controls the amount of electrical power used to drive a cold cathode fluorescent lamp (CCFL). The output is a fairly pure sine wave which is proportional to an input control voltage. The output waveform purity is ensured by driving a symmetrical rectangula ...


4
Peng Xu: Switching regulator with automatic multi mode conversion. Monolithic Power Systems, Perkins Coie, May 17, 2011: US07944191 (59 worldwide citation)

Methods and apparatus are disclosed for efficient switching regulators that adapt automatically to, and operate with, input voltages that are above, below, or equal to the output voltage. The disclosed switching regulators demonstrate advantages of both buck and boost converters at high efficiency.


5
Ying Hsien Tsai: Multiple CCFL current balancing scheme for single controller topologies. Monolithic Power Systems, Perkins Coie, October 1, 2002: US06459216 (59 worldwide citation)

The multiple lamp circuit for minimizing lamp current imbalance comprises at least one transformer comprising primary windings and secondary windings. Multiple lamps are coupled in serial to the secondary windings of the transformer. Multiple separated lamp drive circuits are spliced from the transf ...


6
Hideto Takagishi: Battery charger. Monolithic Power Systems, Perkins Coie, August 20, 2002: US06437549 (34 worldwide citation)

A battery charger is provided that does not sink current from the battery during a reverse mode of operation. The battery charger includes upper and lower switching circuits, which alternately activate and deactivate to provide outgoing current flow. A comparator is coupled to the lower switching ci ...


7
Michael R Hsing: Self-aligned lateral DMOS with spacer drift region. Monolithic Power Systems, Blakely Sokoloff Taylor & Zafman, June 26, 2001: US06252278 (32 worldwide citation)

An LDMOS transistor formed in an N-type substrate. A polysilicon gate is formed atop the N-type substrate. A P-type well is formed in the N-type substrate extending from the source side to under the polysilicon gate. A N+ source region is formed in the P-type well and adjacent to the polysilico ...


8
Michael Ren Hsing: Lateral high voltage transistor having spiral field plate and graded concentration doping. Monolithic Power Systems, Perkins Coie, January 20, 2004: US06680515 (26 worldwide citation)

A lateral high voltage transistor device is disclosed. The transistor includes a gate, a drain, and a source. The drain is located apart from the gate to form an intermediate drift region. The drift region has variable dopant concentration between the drain and the gate. In addition, a spiral resist ...


9
James H Nguyen, Thomas T Chiang, Christopher T Falvey: Constant-peak-current minimum-off-time pulse frequency modulator for switching regulators. Monolithic Power Systems, Perkins Coie, October 3, 2006: US07116089 (24 worldwide citation)

Methods and apparatus are disclosed for controlling switching regulators to automatically switch from a traditional pulse-width modulation (PWM) mode, when the load current is higher than a predetermined value, to a pulse-frequency modulation (PFM) mode, when the load current drops to a point lower ...


10
James H Nguyen: Soft start system and method for switching regulator. Monolithic Power Systems, Perkins Coie, Zhou Lu, April 24, 2007: US07208927 (23 worldwide citation)

The present invention introduces methods and circuits to provide a soft start for a switching regulator. A feedback voltage from output terminal is monitored and used to regulate the bias current of the regulator's error amplifier. The present invention also enables a smooth transition from the soft ...