David A Daniels

US Patent:

6700359, Mar 2, 2004

Filed:

Sep 12, 2001

Appl. No.:

09/952865

Inventors:

David G. Daniels - Dallas TX
Tom Fowler - Garland TX

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

G05F 140

US Classification:

323268

Abstract:

An apparatus for generating a supply voltage includes a first regulator for generating a first supply voltage, a second regulator for generating a second supply voltage, and a feedback circuit to control the second regulator.

US Patent:

6744243, Jun 1, 2004

Filed:

Jun 28, 2001

Appl. No.:

09/895959

Inventors:

David G. Daniels - Dallas TX
Dale J. Skelton - Plano TX
Ayesha I. Mayhugh - Richardson TX
David A. Grant - Dallas TX

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

G05F 144

US Classification:

323284, 323280

Abstract:

A low gain feedback compensation circuit is provided on an integrated circuit. The feedback compensation circuit is coupled to a step down power supply on the integrated circuit. The step down power supply is operable to receive an input voltage and to generate an output voltage based on the input voltage. The feedback compensation circuit includes a line regulation circuit. The line regulation circuit is operable to receive the input voltage and a reference voltage. The line regulation circuit is also operable to generate an offset voltage based on the input voltage and the reference voltage.

US Patent:

6947272, Sep 20, 2005

Filed:

Oct 28, 2002

Appl. No.:

10/282337

Inventors:

David G. Daniels - Dallas TX, US
Aiman Alhoussami - Plano TX, US
Tom L. Fowler - Garland TX, US

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

H02H003/08

US Classification:

361 939, 361 937

Abstract:

A current limit circuit regulates the current flow through a power switch by measuring the current through the switch and comparing it to a reference voltage Vthat represents the limit current. When the current through the power switch is greater than the limit current, the current in the power switch is pulled lower by a driver circuit which controls the power switch. By using a current limit reference voltage that has two levels, the power switch has two current limit thresholds. Using a comparator to compare the input voltage of the power switch to the output voltage of the power switch , an output signal is generated to control the current limit threshold. When the input voltage and output voltage has a large differential voltage, a lower current limit threshold voltage is selected. When the input voltage and output voltage has a small differential voltage, an upper limit threshold voltage is selected.

US Patent:

7026801, Apr 11, 2006

Filed:

Sep 15, 2003

Appl. No.:

10/662558

Inventors:

Thomas Lane Fowler - Garland TX, US
David Gene Daniels - Dallas TX, US
Alan Michael Johnson - Richardson TX, US

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

G05F 1/59

US Classification:

323271, 323285, 323288, 323901

Abstract:

A buck regulator switching power supply () selectively enabling a low side device to effectively recharge a bootstrap capacitor (C) during a high duty cycle of operation. The switching power supply () includes a gate driver () driving a gate of a high side FET (Q) responsive to a controller circuit (). Controller circuit () includes a controller () responsively controlled by a comparator (). Comparator () senses the charge of the charging side of the bootstrap capacitor (C) as compared to a voltage (V). The comparator () also responsively generates an output signal on an output line () as a function of the voltage at the phased output.

US Patent:

20040066217, Apr 8, 2004

Filed:

Oct 2, 2002

Appl. No.:

10/263136

Inventors:

David Daniels - Dallas TX, US
Alan Johnson - Richardson TX, US

International Classification:

H03K003/00

US Classification:

327/099000

Abstract:

An apparatus for providing a signal having a controlled transition characteristic at an output terminal includes: (A) A signal comparing unit having a plurality of input loci and at least one output locus, receiving a first signal at a first input locus and receiving a second signal at a second input locus. The signal comparing unit presents at least one gating signal having a value depending on relative values of the first signal and the second signal at the at least one output locus. (B) A switching unit coupled with the at least one output locus and receiving the first signal and the second signal. The switching unit switchingly controlling coupling of the first signal or of the second signal with the output terminal in response to the at least one gating signal.

US Patent:

20140112023, Apr 24, 2014

Filed:

Oct 23, 2012

Appl. No.:

13/658342

Inventors:

- DALLAS TX, US
DAVID DANIELS - DALLAS TX, US
LUTHULI E. DAKE - MCKINNEY TX, US

Assignee:

TEXAS INSTRUMENTS INCORPORATED - DALLAS TX

International Classification:

H02M 3/335

US Classification:

363 16

Abstract:

A DC-DC converter includes a primary side sense circuit to detect a load current of the DC-DC converter based on reflected current from a secondary winding of the DC-DC converter to a primary winding of the DC-DC converter. A primary side diode models effects of a secondary side diode that is driven from the secondary winding of the DC-DC converter. An output correction circuit controls a switching waveform to the primary winding of the DC-DC converter based on feedback from the primary side sense circuit and the primary side diode.