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Multifunctional switch controller and a switchable method

A multi-function switch and controller technology, applied in electronic switches, current collectors, electric vehicles, etc., can solve problems such as system unresponsiveness

Pending Publication Date: 2019-05-14
杰夫微电子(四川)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Portable systems that need to be properly maintained in use and turned on and off properly by the application processor can suffer from the same problems as smartphones, i.e. the system can become unresponsive and often requires a reset

Method used

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  • Multifunctional switch controller and a switchable method
  • Multifunctional switch controller and a switchable method
  • Multifunctional switch controller and a switchable method

Examples

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Embodiment Construction

[0212] Further describe the technical scheme of the present invention in detail below in conjunction with accompanying drawing:

[0213] This embodiment describes how the multi-function switch controller MFSC100 can be configured to generate dual functions of system reset and deep sleep. The system reset is made after a specified time (such as N seconds), preferably the specified time of N seconds is 1 second-15 seconds, and the start of the specified time is caused by the user continuously pressing the reset mechanical switch for N seconds until the system unit is reset, The reset mechanical switch is as figure 1 and Figure 2.1-2.2 The input button shown in IB105. Deep sleep is performed by using the input pin OFF, such as figure 1 and Figure 2.1-2.2 shown. The digital logic value on the input pin OFF is latched after a specified time (for example, N seconds) after the logic state change is detected, after which the multifunction switch controller MFSC100 will automati...

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PUM

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Abstract

The invention discloses a multifunctional switch controller and a switchable method, which are used for carrying out switchable connection on an external input voltage source IVS and an external output load OL with a controllable surge current CIC when being switched on, and comprise a PMOS transistor PS for driving the external output load OL; The switch controller SC comprises a controllable discharge current and an SC output signal, the SC output signal is called as a load switch control voltage LSCV, and the switch controller SC is connected to a grid electrode of the PMOS transistor PS soas to generate a CIC with controllable rise time and slew rate; And the input control signal pin / SRO is respectively connected with the input ends of the external input button IB and the switch controller SC and is used for triggering the switch controller SC so as to generate controllable surge current CIC. The method is suitable for ultra-portable application, such as a smart watch, a fitness tracker and other portable systems with important service lives of other batteries.

Description

technical field [0001] The invention relates to a multifunctional switch controller and a switchable method. Background technique [0002] Over the past decade, mobile devices have proliferated, from the creation of portable digital acquisition devices (PDAs) to the further development of smartphones, and consumer demand for more computationally powerful systems has been rising dramatically. The evolution of small portable systems such as smart watches and fitness trackers has enabled smaller form factors; thus, longer battery life is required when obtaining the equivalent computing power of a smartphone. Portable systems that need to be properly maintained in use and turned on and off properly by the application processor can suffer from the same problems as smartphones, i.e. the system can become unresponsive, often requiring a reset. [0003] At present, ultra-low Iq (ultra-lowquiescent current, ultra-low quiescent current) load switches and intelligent versions of power...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K17/687H03K17/284H02J7/00
Inventor 孙霓
Owner 杰夫微电子(四川)有限公司
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