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US 9,791,916 B2Granted
Control circuit including load switch, electronic apparatus including the load switch, and control method thereof
AssigneeSamsung Electronics Co., Ltd.
InventorsJin-hyung Lee, Gil-yong Chang
Life of this patent
Estimating the term…
Abstract
A control circuit is provided. The control circuit includes a load switch, and a controller configured to transfer a turn-on signal which is increased step by step to the load switch, and perform a soft start operation which turns on the load switch. In response to the load switch being turned on, the control circuit restricts an inrush current flowing in the load switch.
Claims16
A control circuit comprising:
- a load switch;
- and
- a controller configured to transfer a turn-on signal to the load switch, and perform a soft start operation which turns on the load switch,
- wherein the controller includes:
- a pull-up resistor connected to a bias power source;
- a general-purpose input/output (GPIO) port connected to the load switch;
- and
- a switch configured to connect the pull-up resistor and the GPIO port,
- wherein, in response to the load switch being turned on, the controller turns the switch on and off repeatedly.
6 more elements
A method of controlling a switch of an electronic apparatus including a load switch, the method comprising:
- determining whether or not an event, which allows the load switch to be turned on, is generated;
- and
- transferring a turn-on signal to the load switch, and performing a soft start operation which turns on the load switch, in response to the event being generated,
- wherein the performing of the soft start operation includes turning a switch on and off repeatedly, the switch being located inside a controller of the electronic apparatus and connecting a general-purpose input/output (GPIO) port connected to the load switch and a pull-up resistor connected to a bias power source.
1 more element
An electronic apparatus comprising:
- a connection unit to which an external apparatus is connectable;
- a load switch connected to the connection unit;
- a switch controller configured to automatically turn on the load switch in response to the external apparatus being connected;
- and
- a controller configured to automatically recognize the external apparatus, and perform a control operation corresponding to the external apparatus, in response to the load switch being turned on,
- wherein the switch controller includes:
- a pull-up resistor connected to a bias power source;
- a general-purpose input/output (GPIO) port connected to the load switch;
- and
- a switch configured to connect the pull-up resistor and the GPIO port,
- wherein, in response to the external apparatus being connected, the switch controller turns the switch on and off repeatedly.
8 more elements
Dependencies are inferred from the claim text.