POWER CONVERSION WITH CONTROLLED CAPACITANCE CHARGING INCLUDING ATTACH STATE CONTROL
First Claim
1. A method comprising:
- actively controlling a rate of charging of a capacitor circuit in a switching power converter to a first voltage level across the capacitor circuit; and
allowing the capacitor to discharge to obtain a second voltage level across the capacitor circuit, wherein the second voltage level is sufficient to draw a current through a phase-cut dimmer to prevent the dimmer from prematurely resetting, and the first voltage is sufficient to allow the capacitor to discharge to the second voltage level during each cycle of the line voltage.
3 Assignments
0 Petitions
Accused Products
Abstract
An electronic system includes a controller that actively controls a rate of charging and discharging of an energy storage capacitor to maintain compatibility with a dimmer. The controller actively controls charging of a capacitor circuit in a switching power converter to a first voltage level across the capacitor circuit. The controller further allows the capacitor to discharge to obtain a second voltage level across the capacitor circuit. The second voltage level is sufficient to draw a current through a phase-cut dimmer to prevent the dimmer from prematurely resetting. The first voltage is sufficient to allow the capacitor to discharge to the second voltage level during each cycle of the line voltage.
10 Citations
23 Claims
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1. A method comprising:
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actively controlling a rate of charging of a capacitor circuit in a switching power converter to a first voltage level across the capacitor circuit; and allowing the capacitor to discharge to obtain a second voltage level across the capacitor circuit, wherein the second voltage level is sufficient to draw a current through a phase-cut dimmer to prevent the dimmer from prematurely resetting, and the first voltage is sufficient to allow the capacitor to discharge to the second voltage level during each cycle of the line voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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11. An apparatus comprising:
a controller, wherein the controller is configured to; actively control a rate of charging of a capacitor circuit in a switching power converter to a first voltage level across the capacitor circuit; and allow the capacitor to discharge to obtain a second voltage level across the capacitor circuit, wherein the second voltage level is sufficient to draw a current through a phase-cut dimmer to prevent the dimmer from prematurely resetting, and the first voltage is sufficient to allow the capacitor to discharge to the second voltage level during each cycle of the line voltage. - View Dependent Claims (21, 23)
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22. An apparatus comprising:
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a switching power converter having a switch and conductivity of the switch controls power conversion by the switching power converter; a load coupled to the switching power converter; a capacitor circuit coupled to the switching power converter; and a controller, coupled to the switch of the switching power converter and to the capacitor circuit, wherein the controller is configured to; actively control a rate of charging of the capacitor circuit in a switching power converter to a first voltage level across the capacitor circuit; and allow the capacitor to discharge to obtain a second voltage level across the capacitor circuit, wherein the second voltage level is sufficient to draw a current through a phase-cut dimmer to prevent the dimmer from prematurely resetting, and the first voltage is sufficient to allow the capacitor to discharge to the second voltage level during each cycle of the line voltage.
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Specification