Marco X Soldano

US Patent:

RE41766, Sep 28, 2010

Filed:

Sep 25, 2009

Appl. No.:

12/586718

Inventors:

Marco Soldano - San Jose CA, US

Assignee:

International Rectifier Corporation - El Segundo CA

International Classification:

G05F 1/565
G05F 1/56

US Classification:

323222, 323224, 323908

Abstract:

A boost converter in which the conventional boost diode is replaced by a bidirectional normally conducting semiconductor switch. The circuit may be implemented so the bidirectional switch is self-driven by connecting a low voltage Schottky diode between a first gate-source terminal pair. An inrush current protection function may be provided by utilizing a second gate-source terminal pair to turn the switch on and off independent of the self-driven operation in response to predetermined excessive load current conditions. The inrush current protection function is implemented by use of a second Schottky diode connected between the second gate and source terminals, and an RC circuit connecting the second gate terminal to the return rail for the converter power output transistor with an externally controlled switch connected to the RC circuit to control the bias according to the load current.

US Patent:

RE41770, Sep 28, 2010

Filed:

Feb 19, 2009

Appl. No.:

12/388833

Inventors:

Marco Soldano - San Jose CA, US

Assignee:

International Rectifier Corporation - El Segundo CA

International Classification:

H02M 7/219

US Classification:

363125, 363 84, 363127, 327376

Abstract:

A high voltage rectifier device exhibiting low forward resistance and fast switching time formed of a high voltage structure connected in a cascode configuration with a low voltage structure. The high voltage structure is a bidirectional normally on semiconductor switch have two pairs of gate and source terminals which shuts off if either of the gate terminals is reverse biased. The low voltage structure is a diode, preferably a Schottky or barrier diode. The device is advantageously formed as an integrated circuit. With one of the terminal pairs of the switch clamped to zero volts, the device behaves as a diode, or the second terminal pair can be employed to provide the functions of a three terminal controlled rectifier. Among other possible applications are integrated circuits using four of the devices as a bridge rectifier, and as an anti-parallel diode for connection with an IGBT.

US Patent:

7812586, Oct 12, 2010

Filed:

Oct 22, 2007

Appl. No.:

11/876464

Inventors:

Marco Soldano - San Jose CA, US
Ramanan Natarajan - Torrance CA, US

Assignee:

International Rectifier Corporation - El Segundo CA

International Classification:

G05F 1/70
G05F 1/613

US Classification:

323285, 363 89, 323207, 323222

Abstract:

A one cycle control power factor correction control circuit in accordance with an embodiment of the present application includes a first input operable to receive a signal indicative of an input voltage to the voltage converter, a second input operable to receive a signal indicative of an inductor current in an inductor of the voltage converter and an amplifier operable to amplify the signal indicative of the inductor current, wherein a gain of the amplifier is based on the signal indicative of the input voltage.

US Patent:

8134851, Mar 13, 2012

Filed:

Jun 6, 2008

Appl. No.:

12/134733

Inventors:

Marco Soldano - San Jose CA, US
Adnaan Mustafa Lokhandwala - Manchester NH, US

Assignee:

International Rectifier Corporation - El Segundo CA

International Classification:

H02M 7/217
H02M 3/335

US Classification:

363127, 363 2106

Abstract:

A resonant converter including a primary side switching stage having high- and low-side switches series connected at a switching node and controlled by a primary side controller; a transformer having a primary coil and a secondary coil, the secondary coil having at least one pair of portions series connected at a node, a resonant tank formed by series connecting the primary coil to the switching node with a first inductor and a first capacitor; at least one pair of first and second secondary side switches connected to the at least one pair of portions, respectively, the first and second secondary side switches of each pair being used for synchronous rectification; and a secondary side controller to control and drive the first and second secondary side switches of each pair by sensing voltage across each secondary side switch and determining a turn ON and turn OFF transition for the first and second secondary side switches in close proximity to a point in time when there is zero current through the secondary side switch to achieve synchronous rectification.

US Patent:

20130194848, Aug 1, 2013

Filed:

Jan 31, 2012

Appl. No.:

13/362182

Inventors:

Gabriele Bernardinis - San Jose CA, US
Marco Soldano - San Jose CA, US

International Classification:

H02M 7/06

US Classification:

363126

Abstract:

A method for balancing an electrical parameter (e.g, a current or a voltage) between phases in a multi-phase interleaved circuit includes sensing the electrical parameter, demultiplexing the electrical parameter in accordance with a phase-select signal, sampling the demultiplexed components into a plurality of digital signals, generating an error signal based on a difference between the digital signals, and modulating the phase-select signal, as applied to the phases, in accordance with the error signal.

US Patent:

20200099245, Mar 26, 2020

Filed:

Sep 11, 2019

Appl. No.:

16/568066

Inventors:

- Cupertino CA, US
Blake R. Marshall - San Jose CA, US
Marco Soldano - San Jose CA, US
Liquan Tan - Sunnyvale CA, US
Todd K. Moyer - Portland OR, US
Reza Nasiri Mahalati - Belmont CA, US
Victor Luzzato - Taipei, TW
Wai Man Raymund Kwok - Hong Kong, CN

International Classification:

H02J 7/02
G06F 1/26
H01F 38/14
H02J 5/00
H02J 7/00

Abstract:

An electronic device includes a housing coupled to a display window, a battery and a plurality of inductive charging transmit coils coupled to the battery. The plurality of inductive charging coils are positioned within the enclosure to generate an inductive charging region that extends through the display window and across at least a portion of an exterior of the display window. Sensing circuitry is configured to sense a position of a stylus at the display window and a processor is configured to selectively engage and disengage one or more of the plurality of inductive charging transmit coils based on the sensed position of the stylus. The stylus receives power when it is positioned within the inductive charging window.

US Patent:

20160091940, Mar 31, 2016

Filed:

Aug 20, 2015

Appl. No.:

14/831682

Inventors:

- Cupertino CA, US
Marco Soldano - San Jose CA, US
Nicholas A. Sims - Cupertino CA, US
Manisha P. Pandya - Saratoga CA, US
Bogdan T. Bucheru - San Jose CA, US

International Classification:

G06F 1/26
H02J 7/00
H01R 13/66

Abstract:

An electronic device has an I/O port, a bus connector and a transistor that is connected between the I/O port and a communications contact of the bus connector. A control circuit is connected to the transistor to maintain a gate voltage of the transistor independent of power supply voltage on a power supply contact of the connector. Other embodiments are also described and claimed.