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The purpose of this paper is to reveal the designing of the static characteristic of the digital peak current mode dc-dc converter using a voltage controlled oscillator (VCO). In the proposed method, it is able to sample the reactor current by using the VCO and the delay circuit. The improvement of the dynamic characteristic and the analysis of the proposed method have already been revealed. However...
This paper presents the digital overcurrent limitation for the peak current mode dc-dc converter to realize the highly reliable power supply system. The proposed overcurrent limitation circuit is the simple configuration because the existing function in the regulation mode is applied. The proposed method can detect the overcurrent in real time and it is possible to maintain an arbitrary current in...
The purpose of this paper is to present the digital overcurrent detector for the peak current mode dc-dc converter which has been already applied to the server for the data center. The proposed peak current detection circuit is composed of the RC integrator and comparator as the A-D converter for the detected current. The proposed method can detect the overcurrent by using the RC integration time...
The purpose of this paper is to present a performance characteristics of digital current detector in dc-dc converter. The digital peak current mode control dc-dc converter using the voltage-controlled oscillator (VCO) has already proposed. The peak current is detected by using VCO in the proposed method. The gain of amplifier in the current detector affects to the input voltage range of VCO. Also,...
The purpose of this paper is to present the digital peak current mode phase-shifted full-bridge zero volt switching dc-dc converter for the data center in the higher voltage direct current (HVDC) system, and show its transient response. The proposed peak current mode control circuit is composed of the RC integrator and comparator only and can detect the peak current in real time. At first, the basic...
The purpose of this paper is to present control characteristics of digital peak current mode dc-dc converter. It is difficult to implement the digital current control. An expensive A-D converter is required in order to sample a current. Furthermore, even if an A-D converter can sample the current, it is also needed the high-performance processor to process the sampling data. The peak current can be...
This paper studies the digital controlled dc-dc converter which employs the neural network in coordination with PID control. Especially, we focus on the problem of overcompensation to the transient response of the output voltage in the dc-dc converter by the neural network control. Our previous studies suggested that the neural network control is effective to improve the transient response of the...
The purpose of this paper is a new digital peak current control for the dc-dc converter with a fast proportional (P) control and IIR filter. The proposed control circuit has two features. First, a simple A-D converter for the peak current detection is used. It is consist of an RC integrator and delay circuit. The sampling point of detected current is changed by the feedback value of output voltage...
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