Infineon Technologies Ag

Ansgar Pottbäcker

Dragos Panaite

Florin Biziitu

Ioan Vasiliu

Daniela Burlacu

Minh-Duc Dang

Ramona-Bianca Neagu

Alexandru Varlan

Motor controller circuitry configured to operate two or more motors by driving the motors connected to output terminals of the motor controller circuitry. Each output terminal of the motor controller circuitry may connect to a driver circuit of the motor controller circuitry. Two, or more, of the motors may share an output terminal. For motors that share an output terminal, the operation of a first motor may affect the operation of other motors connected to that shared output terminal. The motor controller circuitry may store information about which output terminals may be paired, that is, which output terminals may connect to the same motor. Based on pairing information stored by the motor controller circuitry, protection circuitry of the motor controller circuitry may operate to prevent nuisance shutdown of a motor because the operation of another motor that shares the same output pin.

Pairing feature for driving DC motors with parallel capacitors in overcurrent recovery mode

A DC/DC converter includes a converter stage to receive an input voltage and to provide an output voltage from the input voltage in accordance with a modulated drive signal. The converter stage further provides a feedback voltage representing the output voltage. A controller circuit includes an error amplifier to receive the feedback voltage and a reference voltage and to provide an error signal based on the feedback voltage and the reference voltage. A PWM modulator receives a clock signal and the error signal and generates a modulated signal based on the clock signal and the error signal, and a logic circuit receives the modulated signal and generates the drive signal for the converter stage based on the modulated signal so that the drive signal has the same duty cycle as the modulated signal, when the duty cycle of the modulated signal is not smaller than a minimum duty cycle value.

Buck converter circuit with seamless PWM/PFM transition

This disclosure includes systems, methods, and techniques for controlling delivery of power to a load. For example, a circuit includes a first switching device and a second switching device. The circuit is configured to activate, in response to a source voltage of a semiconductor device being lower than a first voltage, the first switching device in order to cause the circuit to deliver a first electrical signal to the semiconductor device, where the first electrical signal includes the first voltage and deactivate the first switching device in response to the source voltage of the semiconductor device not being lower than the first voltage. Additionally, the circuit is configured to activate, in response to the source voltage of the semiconductor device not being lower than the first voltage, the second switching device to cause the circuit to deliver a second electrical signal to the semiconductor device.

Circuit for controlling a switching device to deliver power to a load

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Grafing, Germany

Ansgar Pottbäcker