英語 での Error amplifier の使用例とその 日本語 への翻訳
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At low frequencies, the ac gain of the error amplifier is equal to the dc gain.
The error amplifier 11 has one inverting input(-) and two noninverting inputs(+).
The voltage reference can have significant noise content,as can the error amplifier.
The PSRR in this region is a function of the error amplifier gain-bandwidth up to the unity gain frequency.
The major sources of output noise inLDOs are the internal reference voltage and the error amplifier.
The resistor placed at the output of the error amplifier for voltage positioning is also used for loop compensation.
Typically used to provide a precision reference voltage, the TL431 can also beconfigured as an analog controller by exploiting its on-board error amplifier.
In this circuit, the low-battery comparator and error amplifier share the internal reference and the external resistor divider.
The output voltage variation in a regulated power supply is dueprimarily to temperature variation of the reference voltage and the error amplifier.
The VIPerPlus series 6 integrates an error amplifier to meet the most advanced SMPS requirements, reducing the part count.
Simplified adjustable LDO block diagram shows internal noise sources. LDO Noise The major sources of noise inLDOs are the internal reference voltage and the error amplifier.
An LDO consists of a reference voltage, error amplifier, and a power-pass element, such as a MOSFET or bipolar transistor.
With the noise-reduction network, the ac gain is close to unity for much of the bandwidth,so the reference noise and error amplifier noise are amplified to a lesser degree.
Similarly, to an error amplifier, the voltage at the REF pin(the comparator inverting input) is equal to the reference voltage 0.78 V.
In any case,for the best loop speed and output accuracy, the error amplifier needs careful tailoring of its frequency response.
The error amplifier(A3) compares and integrates any voltage difference between the IR drops across RSENSE and RG1, and feeds that output to the gain control(GC) input of the power amplifier. .
PSRR as a Function of LoadCurrent The load current affects the gain-bandwidth of the error amplifier feedback loop, so it also affects the PSRR.
Reducing the noise gain of the error amplifier can produce an LDO where the output noise does not increase dramatically with output voltage.
Using this feedback signal with anadditional programmable reference signal in conjunction with error amplifier circuitry, a programmable power mode can be created.
Above the unity gain frequency of the error amplifier, the feedback of the control loop has no effect on the PSRR, which is determined by the output capacitor and any parasitics between the input and output voltages.
The term GFB is the feedback divider gain and GC(s) is the controller gain,which contains the power filter, the error amplifier, and other gain elements in the control loop.
Shows a block in which the output Vc from the error amplifier and the slope voltage are input to the PWM generator to generate the PWM output.
The S-8363 Series is a CMOS step-up switching regulator which consists of a referencevoltage source,an oscillation circuit, an error amplifier, a phase compensation circuit, a current limit circuit, and a start-up circuit.
The VIPerPlus series 1 integrates an error amplifier and a logic-level MOSFET that makes it possible to build a simple and ultra-low consumption SMPS(buck, buck-boost or flyback) with a 5 V output voltage.
The S-8821 series consists of an oscillation circuit, a controller,a reference voltage circuit, an error amplifier circuit, and an output switching transistor, and can regulate the output voltage by PFM control.
In concrete terms, the voltage of the non-inverted terminal of the error amplifier always acts to be equal to the VREF, and this ensures that the current flowing to the R2 remains constant.
Broadband Noise Source An LDO regulator(aclosed-loop system consisting of a voltage reference, an error amplifier, and a series pass transistor) can be a broadband noise source because of the function it performs.
The switch isturned off where this ramp waveform crosses the error amplifier output VC, and so the coil current information vanishes and the ramp waveform rise stops, becoming zero.
The current-sense gain(GCA) and the transconductance of the error amplifier(gMV) are constants fixed by the IC design; the parameters RSENSE and N are determined by the application.
By using the voltage differenceobtained by comparison with a reference voltage using an error amplifier, and further comparing with a slope wave(triangular wave), the pulse width of a PWM signal is determined and the output voltage is controlled.