Dynamically selectable multimode pluse width modulation system
AssigneeAnalog Devices, Inc.
InventorEdward P. Jordan
Life of this patent
Estimating the term…
Abstract
A dynamically selectable multimode pulse width modulation system includes ramp generator means for generating a ramp; pulse edge modulation means responsive to the ramp generator means for defining a leading edge modulated pulse, a trailing edge modulated pulse and a dual edge modulated pulse; and mode selection means responsive to the pulse edge modulation means for selecting one of the leading edge modulation, trailing edge modulation, and dual edge modulation modes of pulse width modulation.
Claims15
A dynamically selectable multimode pulse width modulation system comprising:
- ramp generator means for generating a ramp;
- pulse edge modulation means responsive to said ramp generator means for defining a leading edge modulated pulse, a trailing edge modulated pulse, and a dual edge modulated pulse;
- and
- mode selection means, responsive to said pulse edge modulation means, for selecting one of said leading edge modulation said, trailing edge modulation and said dual edge modulation modes of pulse width modulation.
A dynamically selectable multimode pulse width modulation system comprising:
- ramp generator means for generating a number of ramps;
- pulse edge modulation means for producing an alternating like number of sequential pulses, said pulse edge modulation means being responsive to said ramp generator means for defining a leading edge modulated pulse, a trailing edge modulated pulse and a dual edge modulated pulse;
- and
- mode selection means, responsive to said pulse edge modulation means, for selecting one of said leading edge modulation said, trailing edge modulation and said dual edge modulation modes of pulse width modulation for each of said alternating sequential pulses.
A dynamically selectable multimode pulse width modulation system comprising:
- ramp generator means for generating a ramp;
- variable reference means for providing a like number of variable leading and a variable trailing edge references;
- fixed reference means for providing a fixed reference associated with each of said variable references;
- pulse edge modulation means responsive to said ramp generator means and said fixed and variable references for selectively defining one of a leading edge modulated pulse and a trailing edge modulated pulse, and responsive to said ramp generator means and both of said fixed and variable references for generating a dual edge modulated pulse;
- and
- mode selection means, responsive to said pulse edge modulation means, for selecting one of said leading edge modulation said, trailing edge modulation and said dual edge modulation modes of pulse width modulation.
A dynamically selectable multimode pulse width modulation system comprising:
- ramp generator means for generating a number of ramps;
- variable reference means for providing a like number of variable leading and a variable trailing edge references;
- fixed reference means for providing a fixed reference associated with each of said variable references;
- pulse edge modulation means for producing an alternating like number of sequential pulses, said pulse edge modulation means being responsive to said ramp generator means and said fixed and variable references for selectively defining one of a leading edge modulated pulse and a trailing edge modulated pulse and responsive to said ramp generator means and both of said fixed and variable references for generating a dual edge modulated pulse;
- and
- mode selection means, responsive to said pulse edge modulation means, for selecting one of said leading edge modulation said, trailing edge modulation and said dual edge modulation modes of pulse width modulation for each of said alternating sequential pulses.
Dependencies are inferred from the claim text.