Folded ramp generator
AssigneeTexas Instruments Incorporated
InventorsYinglai Xia, Shailendra Kumar Baranwal, Yogesh Kumar Ramadass, Junmin Jiang
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Abstract
In one example, an apparatus comprises a power stage having a first power stage input, a second power stage input, and a power stage output. The apparatus also comprises a modulator circuit having a first ramp input, a second ramp input, a modulator input, a first modulator output, and a second modulator output, the first modulator output coupled to the first power stage input, and the second modulator output coupled to the second power stage input. The apparatus also comprises a multi-level ramp generator having a first ramp output and a second ramp output, the first ramp output coupled to the first ramp input, and the second ramp output coupled the second ramp input.
Claims21
An apparatus comprising:
- a power stage having a first power stage input, a second power stage input, and a power stage output;
- a modulator circuit having a first ramp input, a second ramp input, a modulator input, a first modulator output, and a second modulator output, the first modulator output coupled to the first power stage input, and the second modulator output coupled to the second power stage input;
- and
- a ramp generator having a first ramp output and a second ramp output, the first ramp output coupled to the first ramp input, and the second ramp output coupled the second ramp input, the ramp generator configurable to provide a first ramp signal at the first ramp output and a second ramp signal at the second ramp output, the first ramp signal having a different frequency from the second ramp signal.
Dependencies are inferred from the claim text.