SYSTEMS AND METHODS FOR CHARGING A BATTERY
First Claim
1. A method of charging a battery comprising:
- receiving, in a battery charging circuit on an electronic device, an input voltage having a first voltage value from an external power source;
configuring the battery charging circuit to produce a charge current having a first current value into the battery;
monitoring one or more of an input current limit and a duty cycle of the battery charging circuit;
generating control signals to increase the first voltage value of the input voltage to at least one second voltage value if either (i) the input current limit is activated or (ii) the duty cycle reaches a maximum duty cycle;
receiving signals indicating a temperature inside the electronic device; and
generating control signals to decrease the second voltage value of the input voltage to at least one third voltage value when the temperature increases above a first threshold temperature.
1 Assignment
0 Petitions
Accused Products
Abstract
The present disclosure includes a method of charging a battery. In one embodiment, the method comprises receiving, in a battery charging circuit on an electronic device, an input voltage having a first voltage value from an external power source. The battery charger is configured to produce a charge current having a first current value into the battery. The input current limit and/or duty cycle of the charger is monitored. Control signals may be generated to increase the first voltage value of the input voltage if either (i) the input current limit is activated or (ii) the duty cycle reaches a maximum duty cycle. The charger also receives signals indicating a temperature inside the electronic device and generates control signals to decrease the value of the input voltage when the temperature increases above a threshold temperature.
44 Citations
24 Claims
-
1. A method of charging a battery comprising:
-
receiving, in a battery charging circuit on an electronic device, an input voltage having a first voltage value from an external power source; configuring the battery charging circuit to produce a charge current having a first current value into the battery; monitoring one or more of an input current limit and a duty cycle of the battery charging circuit; generating control signals to increase the first voltage value of the input voltage to at least one second voltage value if either (i) the input current limit is activated or (ii) the duty cycle reaches a maximum duty cycle; receiving signals indicating a temperature inside the electronic device; and generating control signals to decrease the second voltage value of the input voltage to at least one third voltage value when the temperature increases above a first threshold temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. An electronic device comprising:
-
a switching regulator configured to receive an input voltage having a first voltage value from an external power source; a current control circuit to configure the switching regulator to produce a charge current having a first current value into a battery; detection circuitry to monitor one or more of an input current limit and a duty cycle of the battery charging circuit; and control circuitry to generate control signals to increase the first voltage value of the input voltage to at least one second voltage value if either (i) the input current limit is activated or (ii) the duty cycle reaches a maximum duty cycle, wherein the control circuitry receives signals indicating a temperature inside the electronic device and generates control signals to decrease the second voltage value of the input voltage to at least one third voltage value when the temperature increases above a first threshold temperature. - View Dependent Claims (22, 23)
-
-
24. An electronic device comprising:
-
a battery charging circuit on an electronic device configured to receive an input voltage having a first voltage value from an external power source, the battery charge circuit comprising current control circuitry to configure the battery charging circuit to produce a charge current having a first current value into the battery, wherein the first voltage value and the first current value correspond to a first power level at an input of the battery charging circuit, the battery charging circuit further comprising means for generating control signals to increase the first voltage value of the input voltage to at least one second voltage value if either (i) an input current limit is activated or (ii) a duty cycle reaches a maximum duty cycle; means for receiving signals indicating a temperature inside the electronic device; and means for generating control signals to decrease the second voltage value of the input voltage to at least one third voltage value when the temperature increases above a first threshold temperature.
-
Specification