Minimum-Deviation Digital Controller IC for DC–DC Switch-Mode Power Supplies

Abstract-This paper will discuss about the proposed hard-ware logic type digital controller for on-board SMPS which has a very small time-delay in control loop. Some experimental has been done including estimation of the load current change experiment and the frequency characteristic of open loop transfer function. These result reveal the proposed circuit could be suppressed the time delay to submicrosecond order. To use the multi-phase system reduces the output ripple.

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“…The trend is categorized with some keywords, which are treated in these papers [2]- [21] that treat DPWM control, in Fig. 2.…”

Section: A Current State Of Dpwm Controller For Polmentioning

confidence: 99%

Sub-microsecond response digital controller for POL

Nonaka

Ishizuka

Kenji

et al. 2014

2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA)

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“…To further improve the system performance and reduce the total volume of the converter, in particular for boost-type converters, reduction of the components' stress has been assigned as the primary performance goal [9]. This is achieved by defining the output voltage deviation as a control objective rather than the convergence time [10], [11].…”

Section: Introductionmentioning

confidence: 99%

“…Boundary controllers [12]- [18], among them hysteretic and sliding-mode controllers, are geometry based methods that split the state-plane such that in one side of the boundary the operation is governed by the on state and by the off state at the other side of the boundary. Hybrid controllers [1]- [8], [10], [11], [19]- [25] switch between two or more control laws based on the system state variables in order to obtain the performance goals. Within the context of switchmode applications, the hybrid control law typically incorporates a steady-state linear controller (i.e.…”

Section: Introductionmentioning

confidence: 99%

“…To overcome the challenges, hardware-efficient, control methods with reduced sensitivity to variations of parameters for buck and boost converters have been recently presented in [1], [10] and [11], [15], respectively. There, a hybrid controller combines a boundary-type control for large-signal transient events with a linear steady-state control law.…”

Section: Introductionmentioning

confidence: 99%

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Stability Analysis of Boundary and Hybrid Controllers for Indirect Energy Transfer Converters

Kirshenboim

Peretz

2016

IEEE Trans. Power Electron.

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In boost converters and other indirect energy transfer topologies, transient-oriented controllers are designed to facilitate a dynamic response that may range from minimum time up to minimum output voltage deviation. Since analytical definitions for these control laws can become quite complex, a large-signal stability verification is not immediate. This paper explores the existence of stability of indirect energy transfer converters that are controlled by either boundary or hybrid controllers and introduces a new simplified procedure for examination of large-signal stability of a given converter and load type using a graphical-analytical approach. The stability analysis and examination method are demonstrated on a boost converter loaded by resistive load and constant current load. The stability conditions are verified using a 30W 3.3V-to-12V boost converter prototype, controlled by a programmable-deviation controller and time-optimal controller, verifying their large-signal stability.

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“…For the control purpose, pulse width modulation (PWM) control is a one of appropriate technique. Digital control or DPWM can accomplish robust and flexible power control with soft-tuned parameters and will become popular control technique [1][2][3][4][5][6][7][8][9][10][11][12]. Although, there are some disadvantages in cost and speed, against analog control circuit.…”

Section: Introductionmentioning

confidence: 99%