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Power control circuit with low power consumption

A functional circuit and circuit technology, which is applied in the direction of data processing power supply, record carrier used by machines, instruments, etc., can solve the problems of large total leakage current of transistors and power consumption of resistor R, etc.

Inactive Publication Date: 2007-09-26
KONINK PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solution usually consists of many transistors and has the following disadvantages: The total leakage current of the transistors is too large
In the circuit of Figure 8, the resistor R dissipates most of the power in the on state of the supply circuit

Method used

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  • Power control circuit with low power consumption
  • Power control circuit with low power consumption
  • Power control circuit with low power consumption

Examples

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Embodiment Construction

[0043] First, it should be noted that, needless to say, voltage is correctly defined as the potential difference between two specific nodes of a circuit. However, once a node is defined as a reference potential, the reference node, the potential of any other node in the circuit can be referenced by its voltage, which is determined by the difference between its potential and that of the reference node limited. Therefore, to ease the complexity of describing embodiments of the invention, the nodes of the circuit are referenced by their voltages compared to a reference potential Vref.

[0044] Referring now to FIG. 1, FIG. 1 shows the general principle of the power saving circuit according to the present invention. Accordingly, the system or device 1 comprises an energy saving circuit 10 according to the present invention. The energy saving circuit 10 has starting means 20, boosting means 30 and power switching means 40 for connecting and disconnecting a supply voltage V provid...

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Abstract

The available battery power on autonomously powered mobile electronic devices, in particular smartcards, is very small but requires a very long shelf life. Thus, even very small rest currents are a big power issue. The invention discloses a power save circuit and method, where a single power switch, e.g. a FET or a MEM switch, can be used to detach the power supply from the whole system and allow the lowest current possible. Further, a combination with a double action button and integration of the power switch provides a solution with a minimum number of components and interconnects. An option for ''system wake-up at any button'' enables additional power saving during use, without inconvenience to the user.

Description

field of invention [0001] The present invention relates to energy-saving circuits, methods of reducing power consumption, and smart cards, transponders, and mobile self-powered electronic devices. Background of the invention [0002] In the field of self-powered electronic devices, miniaturization is an ongoing process and a desired goal, as more and more complex functions can be integrated into hand-held electronic devices. Mobile phones, personal digital assistants (PDAs), mobile digital assistants (MDAs) and handheld GPS devices are examples of these mobile electronic devices, where it is clear that usability is primarily a function of form-factor and is therefore crucial to user trust. important aspect. Furthermore, electronic devices are appearing in items of everyday life, where electronic functionality is a new feature. For example, a transponder in a car key, or even a transponder instead of a car key. A transponder associated with a key or a separate transponder ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K19/07
CPCG06K19/07G06F1/32G06K19/0705G06F1/26
Inventor 弗朗克·克内普克恩斯彼得·扬·斯利克威尔帕维尔·穆夏尔
Owner KONINK PHILIPS ELECTRONICS NV