Silicon Laboratories Inc.

András Vince Horvath

Abdulkerim Coban

Alessandro Piovaccari

Ramin Khoini-Poorfard

Michael James Mills

Pio Balmelli

Jeffrey Lee Sonntag

Michael L Duffy

Douglas R Frey

Tufan C Karalar

Anantha Nag Nemmani

Ross Sabolcik

Paulo Santos

Rudye McGlothlin

An apparatus for controlling a high-power drive device external to a package of a motor drive circuit includes a motor drive circuit. The motor drive circuit includes a driver to control the high-power drive device based on a first reference voltage, a second reference voltage, and a control signal based on a received control signal. A fault circuit generates a failure indicator based on a voltage across terminals of the high-power drive device. A fault condition is based on the failure indicator. A first terminal coupled to the driver charges a node of the high-power drive device over a first length of time in response to an absence of the fault condition and a first level of the control signal. A second terminal coupled to the driver discharges the node over a second length of time different from the first length of time.

Soft shutdown for isolated drivers

A technique includes using a comparator to indicate whether a magnitude of a monitored signal is within predetermined boundaries and controlling a threshold of the comparator based on a history of the indication.

Peak detector

In one embodiment, an internal buffer may be provided within an integrated circuit (IC) to convert a signal to an output current to be output via a pin of the IC, under control of a switch which can be controlled based on a configuration setting of the IC, and may selectively directly couple the signal to the pin when the IC is coupled to an external driver circuit.

Configurable buffer for an integrated circuit

An analog signal is transported across an isolation channel using edge modulation/demodulation of a pulse width modulated (PWM) signal. An edge modulator is responsive to rising edges of the PWM signal to generate first pulses having a first predetermined pulse width and is responsive to receipt of falling edges of the PWM signal to generate second pulses having a second predetermined pulse width with the same polarity as the first pulses. On the opposite side of the isolation channel an edge demodulating circuit recreates the PWM signal using the first and second pulses. The rise and falling edges of the PWM signals can be distinguished based on the pulse width of the first and second pulses. A second order pulse width modulator may be used to generate the PWM signal.

Transport of an analog signal across an isolation barrier

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Budapest, Hungary

András Vince Horvath