Adaptive controller with mode tracking and parametric estimation for digital power converters

An adaptive, modal technology, applied in control/regulation systems, output power conversion devices, conversion equipment without intermediate conversion to AC, etc., can solve the power consumption, size and cost increase, affecting the output inductor current sensing and The accuracy of the sampling value, affecting the operation accuracy of the digital power converter, etc.

Inactive Publication Date: 2008-08-27
INTEL CORP
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Problems solved by technology

All of these increase the power consumption, size and cost of the power supply subsystem and the overall system
In addition, the switching noise introduced when turning the converter switch on and off (when the zero crossing and peak value of the inductor current occur) makes it more difficult to detect the zero crossing of the output inductor current
In addition, the addition of a sensing circuit for the output inductor current may affect the accuracy of the sensed and sampled value of the output inductor current, and may in turn affect the operational accuracy of the digital power converter

Method used

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  • Adaptive controller with mode tracking and parametric estimation for digital power converters
  • Adaptive controller with mode tracking and parametric estimation for digital power converters
  • Adaptive controller with mode tracking and parametric estimation for digital power converters

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Embodiment Construction

[0015] Embodiments of the subject matter disclosed herein, a digital controller for a power converter can adaptively control power switches and detect continuous conduction mode (“CCM”) and discontinuous conduction mode (“DCM”) of the power converter operation without instantaneous or cycle-by-cycle sensing and sampling of the output inductor current. This can result in savings in power consumption as well as size and cost of the power converter in the electronic system. Additionally, a digital controller can facilitate estimating output inductor values, peak inductor current values, and other information about converter operation based in part on input current obtained via low speed sensing.

[0016] Reference in the specification to "one embodiment" or "an embodiment" of the disclosed subject matter means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the disclosed subject matter. ...

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Abstract

A controller for a power stage may adaptively control power switches to improve the efficiency of power consumption by the power stage and detect continuous conduction mode (''CCM'') and discontinuous conduction mode (''DCM'') operations of the power stage without instantaneous or cycle by cycle sensing and sampling of the output inductor current. Additionally, the controller may be used to facilitate the estimation of output inductor value, the peak inductor current value, and other information on converter operations.

Description

technical field [0001] In general, the present disclosure relates to power supply techniques in electronic systems, and in particular (but not exclusively) to controllers for power converters in electronic systems. Background technique [0002] As integrated circuits ("ICs") in computing platforms, such as digital signal processor ("DSP") circuits, become more power efficient, there is no doubt that voltage regulators ("VRs") or power supply electronics for such ICs The system becomes more energy efficient during power conversion at all load levels including light loads. Variable switching frequency combined with discontinuous conduction mode (DCM) is used to improve converter efficiency at light loads. Such schemes achieve improved light-load efficiency with no impact on heavy-load efficiency, sometimes at the expense of steady-state voltage fluctuations and degraded performance on the dynamic side. Other schemes, such as nonlinear control schemes, have also been proposed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/10H02M3/155H02M3/157
CPCH02M3/157
Inventor J·卡霍克L·黄
Owner INTEL CORP
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