Master-slave multi-phase charging
First Claim
Patent Images
1. A circuit for a battery charger, the circuit comprising:
- a switching circuit having a control input, a clock input, and a switching output configured to connect to an inductive element;
a charging terminal configured to electrically connect the inductive element to a battery terminal to provide power to charge a battery connected to the battery terminal;
a control terminal;
a clock terminal;
a control selector configured to operate in a first configuration that provides an internally generated control signal to the control terminal and the control input of the switching circuit, and to operate in a second configuration that provides an externally generated control signal received on the control terminal to the control input of the switching circuit; and
a clock selector configured to operate in a first configuration that provides an internally generated clock signal to the clock terminal and the clock input of the switching circuit, and to operate in a second configuration that provides an externally generated clock signal received on the clock terminal to the clock input of the switching circuit.
2 Assignments
0 Petitions
Accused Products
Abstract
A multi-phase charging circuit comprises a device that can be configured for master mode operation or slave mode operation. In master mode operation, the device generates a control signal and a clock signal to control operation of a switching circuit for generating charging current. In slave mode operation, the device receives externally generated control and clock signals to control operation of its switching circuit.
-
Citations
20 Claims
-
1. A circuit for a battery charger, the circuit comprising:
-
a switching circuit having a control input, a clock input, and a switching output configured to connect to an inductive element; a charging terminal configured to electrically connect the inductive element to a battery terminal to provide power to charge a battery connected to the battery terminal; a control terminal; a clock terminal; a control selector configured to operate in a first configuration that provides an internally generated control signal to the control terminal and the control input of the switching circuit, and to operate in a second configuration that provides an externally generated control signal received on the control terminal to the control input of the switching circuit; and a clock selector configured to operate in a first configuration that provides an internally generated clock signal to the clock terminal and the clock input of the switching circuit, and to operate in a second configuration that provides an externally generated clock signal received on the clock terminal to the clock input of the switching circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A method in a circuit comprising:
-
selecting a clock signal from either an internal clock signal generated by a clock generator of the circuit or an external clock signal provided at a clock terminal of the circuit; selecting a control signal from either an internal control signal generated by a control signal generator of the circuit or an external control signal provided at a control terminal of the circuit; and controlling a switching circuit using the selected clock signal and the selected control signal to produce power at a power output terminal of the circuit. - View Dependent Claims (14, 15, 16, 17, 18, 19)
-
-
20. A circuit comprising:
-
means for selecting a clock signal from either an internal clock signal generated by a clock generator of the circuit or an external clock signal provided at a clock terminal of the circuit; means for selecting a control signal from either an internal control signal generated by a control signal generator of the circuit or an external control signal provided at a control terminal of the circuit; and means for producing power at a power output terminal of the circuit using the selected clock signal and the selected control signal.
-
Specification