Switched Resonant Ultrasonic Power Amplifier System
First Claim
1. A system for controlling an output of an ultrasonic device, the system comprising:
- an amplifier that receives and processes a driver output signal and generates a drive signal to control output of the ultrasonic device;
an output control circuit that receives and processes a signal related to a feedback signal generated by the ultrasonic device and a divider reference signal that generates a compensated clock signal that is adjusted for at least one of phase and frequency differences between the received feedback signal and the divider reference signal; and
a compensated drive circuit receives and processes the compensated clock signal and generates the divider reference signal, and that generates the driver output signal.
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Abstract
A switched resonant power amplifier system for ultrasonic transducers is disclosed. The system includes an amplifier that receives and processes a driver output signal for generating a drive signal that is provided to an ultrasonic device for controlling output of the ultrasonic device. An output control circuit receives and processes a signal related to a feedback signal generated by the ultrasonic device and a divider reference signal, and generates a compensated clock signal that is adjusted for at least one of phase and frequency differences between the received feedback signal and the divider reference signal. A compensated drive circuit receives and processes the compensated clock signal for generating the divider reference signal, and for generating the driver output signal.
181 Citations
21 Claims
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1. A system for controlling an output of an ultrasonic device, the system comprising:
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an amplifier that receives and processes a driver output signal and generates a drive signal to control output of the ultrasonic device; an output control circuit that receives and processes a signal related to a feedback signal generated by the ultrasonic device and a divider reference signal that generates a compensated clock signal that is adjusted for at least one of phase and frequency differences between the received feedback signal and the divider reference signal; and a compensated drive circuit receives and processes the compensated clock signal and generates the divider reference signal, and that generates the driver output signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification