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WO2005096777A3 - Load transient frequency modulation in fixed frequency pwm regulator - Google Patents

Load transient frequency modulation in fixed frequency pwm regulator Download PDF

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Publication number
WO2005096777A3
WO2005096777A3 PCT/US2005/011811 US2005011811W WO2005096777A3 WO 2005096777 A3 WO2005096777 A3 WO 2005096777A3 US 2005011811 W US2005011811 W US 2005011811W WO 2005096777 A3 WO2005096777 A3 WO 2005096777A3
Authority
WO
WIPO (PCT)
Prior art keywords
load transient
pwm regulator
circuit
frequency modulation
frequency
Prior art date
Application number
PCT/US2005/011811
Other languages
French (fr)
Other versions
WO2005096777A2 (en
Inventor
Xuening Li
Stefan W Wiktor
Original Assignee
Texas Instruments Inc
Xuening Li
Stefan W Wiktor
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US10/930,449 external-priority patent/US20060043948A1/en
Priority claimed from US10/948,596 external-priority patent/US20060043949A1/en
Application filed by Texas Instruments Inc, Xuening Li, Stefan W Wiktor filed Critical Texas Instruments Inc
Publication of WO2005096777A2 publication Critical patent/WO2005096777A2/en
Publication of WO2005096777A3 publication Critical patent/WO2005096777A3/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/08—Duration or width modulation ; Duty cycle modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

A regulator circuit to regulate a voltage for a load (260) includes a sensing circuit (250) to sense a change in voltage for the load, a variable frequency circuit (212) to output a signal having a frequency component; and a control circuit (214) responsive to the sensing circuit (250) to control the variable frequency circuit (212) by changing the frequency component and the voltage.
PCT/US2005/011811 2004-04-02 2005-04-04 Load transient frequency modulation in fixed frequency pwm regulator WO2005096777A2 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US55937204P 2004-04-02 2004-04-02
US60/559,372 2004-04-02
US10/930,449 2004-08-30
US10/930,449 US20060043948A1 (en) 2004-08-30 2004-08-30 Load transient frequency modulation in fixed frequency PWM regulator
US10/948,596 US20060043949A1 (en) 2004-08-30 2004-09-22 Load transient frequency modulation in fixed frequency PWM regulator
US10/948,596 2004-09-22

Publications (2)

Publication Number Publication Date
WO2005096777A2 WO2005096777A2 (en) 2005-10-20
WO2005096777A3 true WO2005096777A3 (en) 2006-06-15

Family

ID=35125556

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/011811 WO2005096777A2 (en) 2004-04-02 2005-04-04 Load transient frequency modulation in fixed frequency pwm regulator

Country Status (1)

Country Link
WO (1) WO2005096777A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7759918B2 (en) 2006-06-16 2010-07-20 Semiconductor Components Industries, L.L.C. Method for inhibiting thermal run-away

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5561385A (en) * 1994-04-08 1996-10-01 Lg Semicon Co., Ltd. Internal voltage generator for semiconductor device
US6229389B1 (en) * 1998-11-18 2001-05-08 Intersil Corporation Class D modulator with peak current limit and load impedance sensing circuits

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5561385A (en) * 1994-04-08 1996-10-01 Lg Semicon Co., Ltd. Internal voltage generator for semiconductor device
US6229389B1 (en) * 1998-11-18 2001-05-08 Intersil Corporation Class D modulator with peak current limit and load impedance sensing circuits

Also Published As

Publication number Publication date
WO2005096777A2 (en) 2005-10-20

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