LAMP DRIVER FOR LOW PRESSURE ENVIRONMENT
First Claim
1. A lamp driver, comprising:
- a power source;
at least two direct current to direct current converters, each direct current to direct current converter connected with the power source in series; and
a direct connection between the at least two direct current to direct current converters, wherein the direct connection is attachable to a reference voltage.
1 Assignment
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Accused Products
Abstract
Embodiments of the present disclosure relate to a lamp driver for lamps used as a source of heat radiation in a thermal processing chamber. The lamp driver includes a power source, at least two DC/DC converters, each DC/DC converter connected with the power source in series, a direct connection between the at least two DC/DC converters, and a line that is attached to the direct connection and attachable to a reference voltage. A plurality of the lamp drivers may be utilized to power a plurality of lamps positioned in a grounded lamphead assembly. The electrical potential between the lamps and the grounded lamphead assembly is reduced, which reduces the risk of arcing between the lamps and the lamphead assembly.
5 Citations
20 Claims
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1. A lamp driver, comprising:
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a power source; at least two direct current to direct current converters, each direct current to direct current converter connected with the power source in series; and a direct connection between the at least two direct current to direct current converters, wherein the direct connection is attachable to a reference voltage. - View Dependent Claims (2, 3, 4, 5, 6)
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7. The lamp driver of 1, wherein the power source is a three phase alternating current power source.
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8. A thermal processing apparatus, comprising:
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a plurality of lamps positioned in a lamphead assembly; and one or more lamp drivers, wherein each lamp driver of the one or more lamp drivers is connected to one or more lamps of the plurality of lamps, and wherein the one or more lamp drivers each includes; a power source; at least two direct current to direct current converters, each direct current to direct current converter connected with the power source in series; and a direct connection between the at least two direct current to direct current converters, wherein the direct connection is attachable to a reference voltage. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A method for powering a plurality of lamps positioned in a lamphead assembly, comprising:
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converting a 480 V alternating current voltage from a power source to a direct current voltage; reducing the direct current voltage to a reduced direct current voltage using at least two direct current to direct current converters, wherein each direct current to direct current converter is connected with the power source in series, and wherein a direct connection between the at least two direct current to direct current converters is connected to a reference voltage; and supplying the reduced direct current voltage to one or more lamps of the plurality of lamps, wherein a maximum electrical potential between the plurality of lamps and the lamphead assembly is about 100 V. - View Dependent Claims (17, 18, 19, 20)
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Specification