Marty Perry

US Patent:

6343026, Jan 29, 2002

Filed:

Nov 9, 2000

Appl. No.:

09/711338

Inventors:

Marty Perry - Tucson AZ

Assignee:

Artesyn Technologies, Inc. - Boca Raton FL

International Classification:

H02M 75395

US Classification:

363 65, 363 97, 323272

Abstract:

A current limit circuit for a power supply including first and second interleaved power converters. The current limit circuit includes a peak detection circuit connected to a current sensing circuit of the power supply, a sample/hold circuit connected to the peak detection circuit, and an averaging filter circuit connected to the sample/hold circuit.

US Patent:

6570268, May 27, 2003

Filed:

Nov 20, 2000

Appl. No.:

09/716506

Inventors:

Marty Perry - Tucson AZ
Ian Poynton - Marana AZ

Assignee:

Artesyn Technologies, Inc. - Boca Raton FL

International Classification:

H02J 100

US Classification:

307 38

Abstract:

A dual output power converter, including a transformer having first and second secondary windings, a first synchronous rectifier coupled to the first secondary winding of the transformer for converting an alternating voltage at the first secondary winding to a first DC output voltage, a second synchronous rectifier coupled to the second secondary winding of the transformer for converting an alternating voltage at the second secondary winding to a second DC output voltage, and a drive circuit coupled to each of the first and second synchronous rectifiers for turning on the first and second synchronous rectifiers when the alternating voltage at the first and second secondary windings transition from a first polarity to a second polarity, and for turning off the first and second synchronous rectifiers when the alternating voltage at the first and second secondary windings transition from the second polarity to the first polarity.

US Patent:

6578260, Jun 17, 2003

Filed:

Oct 20, 2000

Appl. No.:

09/693016

Inventors:

Duane E. Dixon - Tucson AZ
Marty Perry - Tucson AZ
Ian Poynton - Marana AZ

Assignee:

Artesyn Technologies, Inc. - Boca Raton FL

International Classification:

H05K 336

US Classification:

29830, 29840, 29842, 29843

Abstract:

A method for assembling a multi-deck power supply device including control and power components. The method comprises providing a first circuit board having a first and a second side. Two prefabricated pin holders are positioned on the first side of the first circuit board. Each pin holder includes two threaded inserts, a set of first pins and a set of second pins. The first pins are floating for self-alignment during soldering. After the first pins are soldered on the first side of the first circuit board, a second circuit board is aligned above the first circuit board, and the first and second pins are soldered to the second circuit board. The first pins may include pre-assembled oscillation dampers, such as magnetic material beads.

US Patent:

6765810, Jul 20, 2004

Filed:

Jan 13, 2003

Appl. No.:

10/341011

Inventors:

Marty Perry - Tucson AZ

Assignee:

Artesyn Technologies, Inc. - Boca Raton FL

International Classification:

H02M 3335

US Classification:

363 2106

Abstract:

A DC-DC power converter is presented. According to one embodiment, the converter includes first and second transformers, and a double-ended input circuit, including first and second primary switches, for generating an alternating voltage across the primary windings of the first and second transformers. The converter also includes a control circuit (such as, for example, a PWM control circuit) for controlling the primary switches such that the primary switches are simultaneously OFF for a first time period during a switching cycle of the converter. In addition, the converter includes first and second synchronous rectifiers. The first synchronous rectifier is coupled to the secondary winding of the first transformer and the second synchronous rectifier is coupled to the secondary winding of the second transformer. The first synchronous rectifier may be for rectifying a voltage across the secondary winding of the first transformer and the second synchronous rectifier may be for rectifying a voltage across the secondary winding of the second transformer. Further, the control circuit is for controlling the first and second synchronous rectifiers such that the first and second synchronous rectifiers are simultaneously ON for a second time period during the switching cycle.

US Patent:

6768658, Jul 27, 2004

Filed:

Sep 4, 2002

Appl. No.:

10/234221

Inventors:

Marty Perry - Tucson AZ

Assignee:

Artesyn Technologies, Inc. - Boca Raton FL

International Classification:

H02M 300

US Classification:

363 65, 307 82

Abstract:

A DC-DC power supply with at least two paralleled converters and a current share method for the power supply are presented. According to one embodiment, the power supply includes first and second current mode controlled power converters connected in parallel for powering a load. Each of the paralleled power converters may include a voltage error amplifier, and the output terminals of the respective voltage error amplifiers are connected together. The power supply further includes a slow loop current share control circuit that is responsive to a sensed current in each of the power converters and, based on the sensed currents, forces the power converters to equally contribute to the load current.

US Patent:

6831847, Dec 14, 2004

Filed:

May 27, 2003

Appl. No.:

10/446188

Inventors:

Marty Perry - Tucson AZ

Assignee:

Artesyn Technologies, Inc. - Boca Raton FL

International Classification:

H00M 3335

US Classification:

363 2106, 363 17, 363 2114, 363 26, 363127

Abstract:

A drive circuit for a synchronous rectifier of a switch mode power converter is disclosed. The switch mode power converter may include a main power transformer and a primary switch for cyclically coupling the main power transformer to an input source. The drive circuit may comprise a turn-on switch, a turn-off switch, a charge pump and a pulse transformer. The charge pump may be coupled to a secondary winding of the main power transformer. The turn-on switch is for turning on the synchronous rectifier and may be coupled to the charge pump. The pulse transformer may include primary and secondary windings, wherein the primary winding is responsive to a control signal supplied to the primary switch. The turn-off switch is for turning off the synchronous rectifier and may include a control terminal coupled to the secondary winding of the pulse transformer.

US Patent:

6912138, Jun 28, 2005

Filed:

Aug 28, 2003

Appl. No.:

10/650634

Inventors:

Marty Perry - Tucson AZ, US
Ian Poynton - Marana AZ, US

Assignee:

Artesyn Technologies, Inc. - Boca Raton FL

International Classification:

H02M003/335

US Classification:

363 2106, 363 2114

Abstract:

A synchronous rectifier control circuit for controlling a synchronous rectifier of a power converter is disclosed. According to one embodiment, the control circuit includes a differentiator circuit responsive to the output voltage of the power converter. The control circuit also includes a summing circuit responsive to an output of the differentiator circuit and a step function signal. The control circuit further includes an integrator circuit responsive to an output of the summing circuit. In addition, the control circuit includes a gate drive circuit responsive to an output of the integrator circuit and a switching signal that controls a primary switch of the converter. The gate drive circuit also includes an output terminal for coupling to a control terminal of the synchronous rectifier.

US Patent:

7254044, Aug 7, 2007

Filed:

Jan 11, 2005

Appl. No.:

11/033187

Inventors:

Marty Perry - Tucson AZ, US
Ian Poynton - Marana AZ, US

Assignee:

Artesyn Technologies, Inc. - Boca Raton FL

International Classification:

H02M 3/335

US Classification:

363 20, 363 89, 323299

Abstract:

The present invention is directed generally to a power supply. According to various embodiments, the power supply includes at least one DC/DC converter. The converter includes a primary switch controlled by a pulse width modulated control signal such that the primary switch is on for a D time period of each switching cycle of the converter and is off for a 1-D time period of each switching cycle. Also, the power supply includes a current sensing element connected in series with the primary switch. In addition, the power supply includes a current limit circuit connected to the current sensing element. The current limit circuit includes a functional circuit having a first input responsive to a first signal whose voltage is proportional to the output current of the converter during the D time period of the switching cycle of the converter. A second input of the functional circuit is responsive to a second signal whose voltage is proportional to the output current of the converter during the 1-D time period of the switching cycle of the converter. In that way, the voltage of the output signal of the functional circuit is proportional to the output inductor current of the converter over both the energy storage phase (the D interval) and the energy deliver phase (the 1-D) interval of the converter.