🗊Презентация Топологии импульсных преобразователей

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Слайды и текст этой презентации

Слайд 1


Switching Power Supplies A to Z Basic Switcher Architectures Thanks to John Bittner
Описание слайда:
Switching Power Supplies A to Z Basic Switcher Architectures Thanks to John Bittner

Слайд 2


Voltage Mode Buck Regulator Basic Architecture
Описание слайда:
Voltage Mode Buck Regulator Basic Architecture

Слайд 3


Feedback, Error Amplifier, and Compensation – Two Types
Описание слайда:
Feedback, Error Amplifier, and Compensation – Two Types

Слайд 4


Voltage Mode Buck Regulator Loop Gain Modulator and Power Stage gain: Feedback, Error Amplifier, and Compensation gain (Gm-type Error Amp): Regulator loop gain, H(s):
Описание слайда:
Voltage Mode Buck Regulator Loop Gain Modulator and Power Stage gain: Feedback, Error Amplifier, and Compensation gain (Gm-type Error Amp): Regulator loop gain, H(s):

Слайд 5


Voltage-Mode Buck Regulator Frequency Response
Описание слайда:
Voltage-Mode Buck Regulator Frequency Response

Слайд 6


Current Mode Buck Regulator Basic Architecture
Описание слайда:
Current Mode Buck Regulator Basic Architecture

Слайд 7


Current Mode Buck Regulator Loop Gain Gain of Modulator and Power Stage:
Описание слайда:
Current Mode Buck Regulator Loop Gain Gain of Modulator and Power Stage:

Слайд 8


Current Mode Buck Regulator Loop Gain Feedback, Error Amplifier, and Compensation gain (Gm-type Error Amp): Regulator loop gain:
Описание слайда:
Current Mode Buck Regulator Loop Gain Feedback, Error Amplifier, and Compensation gain (Gm-type Error Amp): Regulator loop gain:

Слайд 9


Current-Mode Buck Regulator Frequency Response
Описание слайда:
Current-Mode Buck Regulator Frequency Response

Слайд 10


Hysteretic Buck Regulator Basic Architecture
Описание слайда:
Hysteretic Buck Regulator Basic Architecture

Слайд 11


Hysteretic Buck Regulator Switching Waveforms
Описание слайда:
Hysteretic Buck Regulator Switching Waveforms

Слайд 12


Calculating Hysteretic Regulator Switching Frequency In most cases, switching frequency is determined by output ripple voltage (VOUT) resulting from ESR. Amplitude of VOUT is described by the following two equations: Combining these two equations yields an expression for the switching frequency
Описание слайда:
Calculating Hysteretic Regulator Switching Frequency In most cases, switching frequency is determined by output ripple voltage (VOUT) resulting from ESR. Amplitude of VOUT is described by the following two equations: Combining these two equations yields an expression for the switching frequency

Слайд 13


Compensating for excessive ESL in output capacitor
Описание слайда:
Compensating for excessive ESL in output capacitor

Слайд 14


Constant On-Time Buck Regulator Basic Architecture
Описание слайда:
Constant On-Time Buck Regulator Basic Architecture

Слайд 15


Constant On-time Buck Regulator Switching Waveforms
Описание слайда:
Constant On-time Buck Regulator Switching Waveforms

Слайд 16


Calculating Constant 0n-Time Regulator Switching Frequency tON is a constant, so the regulator must adjust tOFF to the value necessary to maintain charge balance in the inductor. This is expressed by the following equation: Solving this equation for 1/T yields an expression for the switching frequency:
Описание слайда:
Calculating Constant 0n-Time Regulator Switching Frequency tON is a constant, so the regulator must adjust tOFF to the value necessary to maintain charge balance in the inductor. This is expressed by the following equation: Solving this equation for 1/T yields an expression for the switching frequency:

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