TW200708928A - Method and apparatus for power supply having brownout protection - Google Patents

Method and apparatus for power supply having brownout protection

Info

Publication number
TW200708928A
TW200708928A TW094127933A TW94127933A TW200708928A TW 200708928 A TW200708928 A TW 200708928A TW 094127933 A TW094127933 A TW 094127933A TW 94127933 A TW94127933 A TW 94127933A TW 200708928 A TW200708928 A TW 200708928A
Authority
TW
Taiwan
Prior art keywords
circuit
brownout
apparatus
bus voltage
microprocessor
Prior art date
Application number
TW094127933A
Other versions
TWI283808B (en
Inventor
Kuang-Chih Shih
Original Assignee
System General Corp
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
Application filed by System General Corp filed Critical System General Corp
Priority to TW94127933A priority Critical patent/TWI283808B/en
Publication of TW200708928A publication Critical patent/TW200708928A/en
Application granted granted Critical
Publication of TWI283808B publication Critical patent/TWI283808B/en

Links

Abstract

An apparatus of power supplies having brownout protection and a method thereof are proposed. As brownout condition occurs, the apparatus informs a microprocessor to proceed with the shutdown process timely. The apparatus includes a power factor correction (PFC) circuit; a bus capacitor generating a bus voltage by receiving an input voltage via the PFC circuit; a PWM circuit generating multiple output voltages for the microprocessor; a supervisor circuit generating a power-good signal in response to a proportional bus voltage; a brownout circuit for disabling the boosting operation of the PFC circuit under brownout conditions. While the PFC circuit is disabled, the bus voltage will start to fall. As the proportional bus voltage is lower than a threshold voltage, the supervisor circuit generates the power-good signal. Therefore, the microprocessor can proceed with the shutdown procedure timely.
TW94127933A 2005-08-16 2005-08-16 Method and apparatus for power supply having brownout protection TWI283808B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW94127933A TWI283808B (en) 2005-08-16 2005-08-16 Method and apparatus for power supply having brownout protection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW94127933A TWI283808B (en) 2005-08-16 2005-08-16 Method and apparatus for power supply having brownout protection

Publications (2)

Publication Number Publication Date
TW200708928A true TW200708928A (en) 2007-03-01
TWI283808B TWI283808B (en) 2007-07-11

Family

ID=39430886

Family Applications (1)

Application Number Title Priority Date Filing Date
TW94127933A TWI283808B (en) 2005-08-16 2005-08-16 Method and apparatus for power supply having brownout protection

Country Status (1)

Country Link
TW (1) TWI283808B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI393333B (en) * 2009-09-22 2013-04-11 Richpower Microelectronics Controller chip and protection method for a power converter
TWI497298B (en) * 2012-06-22 2015-08-21 Zippy Tech Corp Power Information Communication System

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI393333B (en) * 2009-09-22 2013-04-11 Richpower Microelectronics Controller chip and protection method for a power converter
TWI497298B (en) * 2012-06-22 2015-08-21 Zippy Tech Corp Power Information Communication System

Also Published As

Publication number Publication date
TWI283808B (en) 2007-07-11

Similar Documents

Publication Publication Date Title
US9966848B2 (en) Systems and methods for enhanced efficiency auxiliary power supply module
ES2647012T3 (en) Wind turbine generator with a low voltage anti-cut controller and procedure to control the wind turbine components
CN101617282B (en) Power supply control device
TW567656B (en) Dynamic hysteresis voltage regulation
EP2846437B1 (en) Uninterrupted power supply method and uninterrupted power supply
US9367072B2 (en) AC-DC converters and method with soft-start scheme for AC-DC converters
US20080307242A1 (en) Computer system power source with improved light-load efficiency
US9160227B2 (en) Power supply apparatus with low standby power consumption
US8786131B2 (en) Uninterruptible power supply and method for enabling the same to save energy
CN203522279U (en) Multifunctional mobile power supply
CN101447666B (en) Power supply system and power overvoltage safety protection control method
US20110022867A1 (en) Apparatus and method for reducing the standby power consumption of a display, and display with low standby power consumption
CN103107569A (en) Method and apparatus for performing system power management
TWI377763B (en) Ups aparatus and method of power saving thereof
CN101187829B (en) Computer and power control method thereof
GB2497064A (en) Apparatus and method for controlling a power inverter
MY140380A (en) System and method for powering a load
WO2012061044A3 (en) Portable alternating current inverter having reduced impedance losses
TWI446155B (en) Can automatically switch the standby power supply power supply path
EP1306958A3 (en) Generator with DC boost
AU2015210446B2 (en) Power supply
EP2683068A8 (en) Control circuit for a switched-mode power supply
WO2008086340A3 (en) Uninterruptable power supply
TWI417710B (en) Computer system for saving power consumption of a stand-by/power-off state and method thereof
WO2013036469A3 (en) Surgical generator and related method for mitigating overcurrent conditions