Primary-side-control power converter having a switching controller using frequency hopping and voltage and current control loops
DC CAFCFirst Claim
Patent Images
1. A power converter comprising:
- a switch, responsive to a switching signal, to control electrical power in the power converter; and
a controller to generate the switching signal and to control the switching signal in response to a first feedback signal associated with a voltage control loop and a second feedback signal associated with a current control loop;
wherein the controller includes a pattern generator to generate a digital pattern and the controller uses the digital pattern for use in generating the switching signal as a frequency-hopping switching signal to the switch.
9 Assignments
Litigations
0 Petitions
Reexamination
Accused Products
Abstract
A power converter includes a switch and a controller. The switch switches electrical power in the power converter. The controller generates a switching signal to control the switch in response to a first feedback signal associated with a voltage control loop and a second feedback signal associated with a current control loop. The controller can also allow the switching frequency to hop from frequency to frequency according to a digital pattern.
115 Citations
51 Claims
-
1. A power converter comprising:
-
a switch, responsive to a switching signal, to control electrical power in the power converter; and a controller to generate the switching signal and to control the switching signal in response to a first feedback signal associated with a voltage control loop and a second feedback signal associated with a current control loop; wherein the controller includes a pattern generator to generate a digital pattern and the controller uses the digital pattern for use in generating the switching signal as a frequency-hopping switching signal to the switch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A power converter comprising:
-
a transformer to transfer electrical power from a primary-side of the power converter to a secondary-side of the power converter; a switch to switch the electrical power transferred by the transformer, the switching being controlled by a switching signal; a controller to generate the switching signal and to control the switching signal in response to a first feedback signal by sampling a voltage signal and a discharge-time associated with the transformer during an off time of the switching signal; wherein the controller includes a pattern generator to generate a digital pattern and the controller uses the digital pattern for use in generating the switching signal as a frequency-hopping switching signal to the switch.
-
-
12. A power converter comprising:
-
input terminals and output terminals; a transformer to transfer electrical power from the input terminals to the output terminals; a switch to control the transformer in response to a switching signal having a switching frequency; and a controller to generate the switching signal and to allow the switching frequency to hop from frequency to frequency according to a digital pattern. - View Dependent Claims (13, 14)
-
-
15. A method for regulating power in a power converter, comprising:
-
receiving electrical power from input terminals; controlling a switching signal to regulate the connection of the electrical power to output terminals in response to a first feedback signal associated with a voltage control loop and a second feedback signal associated with a current control loop; generating a frequency-hopping switching signal in order to reduce at least electro-magnetic interference (EMI); and generating a digital pattern for use in generating the frequency-hopping switching signal. - View Dependent Claims (16, 17, 18, 19, 20, 21)
-
-
22. A power converter comprising:
-
input terminals and output terminals; a transformer to transfer electrical power from the input terminals to the output terminals; a switch to switch the transformer in response to a switching signal having a switching frequency; and a controller to generate the switching signal in response to a first feedback signal associated with a voltage control loop and a second feedback signal associated with a current control loop in the primary-side of the transformer; wherein the controller includes a pattern generator to generate a digital pattern and the controller uses the digital pattern for use in generating the switching signal as a frequency-hopping switching signal to the switch. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31)
-
-
32. A power converter comprising:
-
a transformer coupled to an input voltage for the power converter; a switch to switch electrical power flowing through the transformer; a sense device coupled to the transformer to sense at least current through a primary winding of the transformer; and a controller coupled to the transformer, the controller to provide a switching signal to the switch for regulating output power for the power converter, and to control the switching signal based on a first feedback signal associated with a first control loop and a second feedback signal associated with a second control loop in the primary-side of the power converter; wherein the controller includes a pattern generator to generate a digital pattern and the controller uses the digital pattern for use in generating the switching signal as a frequency-hopping switching signal to the switch. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
-
Specification