Nxp USA, Inc.

Nxp B.v.

Maxim Integrated Products, Inc.

Carmelo Morello

Ranga Seshu Paladugu

Soon G Lim

Ronak Prakashchandra Trivedi

Arman Hematy

Jean CauXuan Le

See-Hoi Caesar Wong

Hanqing Xing

The disclosure relates to improvements in bidirectional power switch circuits. Example embodiments include a bidirectional power switch, BPS, circuit () comprising: first and second terminals (); first and second MOSFETs () connected in series between the first and second terminals () and comprising respective first and second source to body diodes (Dsb, Dsb, Dsb); first and second power supply rails (VDD, VEE); first, second, third, fourth and fifth switchable current sources (IDD-, SD-, IEE-, SE-); first and second resistors (Rbs, Rgs); and a BPS switching controller () configured to control operation of the BPS circuit () between a BPS ON state in which the first and second terminals () are connected and a BPS OFF state in which the first and second terminals () are disconnected.

Bidirectional power switch circuit

The present disclosure relates to a high voltage bidirectional power switch circuit that includes a high voltage block coupled to a first terminal; and a resistance network including modules connected in parallel with each other between the high voltage block and a second terminal. Each module includes a precision resistor connected in series with a conduction channel of a resistance switching transistor; a first biasing resistor connected between a first conduction channel terminal and a control terminal of the resistance switching transistor; a second biasing resistor connected between a second conduction channel terminal and the control terminal; a body bias control circuit configured to control a bias of body diodes of the resistance switching transistor; a switchable sourcing current source; and a switchable sinking current source. Switches of the switchable sourcing current source and the switchable sinking current source receive switching signals to control the resistance switching transistor.

High voltage switch

One example discloses a reconfigurable analog to digital converter (ADC) device, including: an analog front end (AFE) configured to receive a set of analog input signals and generate a corresponding set of digital output signals; wherein the AFE includes a set of reconfigurable ADC conversion circuits; and a sequencer coupled to the AFE and configured to control the set of reconfigurable ADC conversion circuits with a first AFE channel configuration at a first time and a second AFE channel configuration at a second time.

Reconfigurable analog to digital converter (ADC)

An integrated circuit includes a multiplexer circuit configured to provide an output signal on a conductive line, a programmable gain amplifier having a non-inverting input connected to the conductive line to receive the output signal from the multiplexer, a slew rate adjust circuit connected at a first node on the conductive line between the multiplexer circuit and the programmable gain amplifier, a first switch including a first terminal connected to the first node and a second terminal connected to the input of the programmable gain amplifier, and a low pass filter connected between the first and second terminals of the first switch.

Integrated circuit with an input multiplexer system

A method for quickly shutting down a transistor in a switching circuit includes (a) generating a feedback signal associated with current flowing through the transistor, (b) transmitting the feedback signal through an isolating device to a controller, (c) detecting an over-current condition in the switching circuit without transmitting information through the isolating device, and (d) shutting-down the transistor in response to detecting the over-current condition, without transmitting information through the isolating device. A transistor driver includes logic circuitry, an isolating device, driver circuitry configured to drive a transistor according to a control signal received from the logic circuitry via the isolating device, and over-current circuitry configured to (a) detect an over-current condition without receiving information via the isolating device and (b) cause the driver circuitry to shut-down the transistor in response to detection of the over-current condition, without receiving information via the isolating device.

Growing community of inventors

San Jose, CA, United States of America

Carmelo Morello