摘要:
The present invention relates a current zero crossing detecting circuit including a PWM driving half bridge circuit, which generates an output signal (OUT) and a signal synchronous with the high impedance condition of said PWM driving half bridge circuit. Said inventive circuit has the characteristic of comprising detecting means (DFLIP, COMP) synchronous with said signal synchronous with the high impedance condition of said PWM driving half bridge circuit and said output signal (OUT), and said detecting means generating a direction signal (DIR_COR) showing the current direction flowing in said pulse width modulation circuit.
摘要:
A device for stabilizing images acquired by a digital-image sensor includes a motion-sensing device, for detecting quantities correlated to pitch and yaw movements of the digital-image sensor, and a processing unit, connectable to the digital-image sensor for receiving a first image signal and configured for extracting a second image signal from the first image signal on the basis of the quantities detected by the motion-sensing device. The motion-sensing device includes a first accelerometer and a second accelerometer.
摘要:
A portable apparatus having an accelerometer device and a supporting element in the accelerometer device, having a first body of semiconductor material integrating a sensor element that detects movements of the first body and generates a signal correlated to the detected movement; a second body of semiconductor material that integrates a conditioning electronics and that is electrically connected to the first body; and conductive bumps that provide electrical connection of the first and second bodies to the supporting element. In particular, the conductive bumps connect the first and second bodies to the supporting element without the interposition of any packaging.
摘要:
A driver circuit for controlling a piezoelectric actuator in a charge mode includes an amplifier having a first input terminal for receiving a control voltage, a second input terminal, and a main final stage with a main output terminal connected to the piezoelectric actuator. The amplifier also includes an additional final stage with an additional output terminal connected to the second input terminal. The main final stage and the additional final stage are connected in parallel with one another so that a current which passes through the main output terminal is proportional in accordance with a predefined factor to a current which passes through the additional output terminal. The driver circuit includes a device having a constant capacitance connected to the second input terminal so that an electrical charge transferred to the piezoelectric actuator is correlated with the control voltage in accordance with the predefined factor and the capacitance.
摘要:
A protection circuit for a power supply line in a semiconductor device, comprising first and second field-effect transistors, both transistors having their respective drain terminals connected to the power supply line. The gate source terminals of the first transistor are connected to ground through first and second resistors, respectively. The gate and source terminals of the second transistor are connected to the source terminal of the first transistor and to ground, respectively.
摘要:
A portable apparatus having an accelerometer device and a supporting element in the accelerometer device, having a first body of semiconductor material integrating a sensor element that detects movements of the first body and generates a signal correlated to the detected movement; a second body of semiconductor material that integrates a conditioning electronics and that is electrically connected to the first body; and conductive bumps that provide electrical connection of the first and second bodies to the supporting element. In particular, the conductive bumps connect the first and second bodies to the supporting element without the interposition of any packaging.
摘要:
A switching device having a first and a second electronic switch connected in a half-bridge configuration and each having a control terminal for receiving a switching signal alternatively having a turn-on value and a turn-off value for taking the first and second electronic switches to an on state and to an off state, respectively; the switching device includes, for each switch, means for detecting the state of the switch and means for keeping the switching signal at the turn-off value for one of the electronic switches when the detected state of the other electronic switch is the on state.
摘要:
A capacitive high voltage generator having a first stage and a second stage respectively formed by a first basic block and a second basic block and a third basic block. Each basic block has a timing input, a first supply input, a second supply input and an output terminal and includes: a buffer having a first terminal connected to the first supply input of the corresponding basic block, a second terminal connected to a ground terminal and an input terminal connected to the timing input of the corresponding basic block; a capacitor having a first terminal connected to an output terminal of the corresponding buffer and a second terminal connected, in a non-disconnectable way, to the output terminal of the corresponding basic block; a diode having a first terminal connected to the second supply input and a second terminal connected, in a non-disconnectable way, to the output terminal of the corresponding basic block. The output terminals of the first and second basic blocks are respectively connected to the first supply input and to the second supply input of the third basic block.
摘要:
A dual supply device having a reference terminal, an input terminal for the application of a substantially constant input voltage relative to the reference terminal, a first output terminal for supplying a first supply voltage different from the input voltage, a second output terminal for supplying a second supply voltage substantially opposite to the first supply voltage a direct-current/direct-current converter connected between the input terminal and the first output terminal for converting the input voltage into the first supply voltage, and a capacitive translator connected between the first and second output terminals for translating the first supply voltage into the second supply voltage.
摘要:
An integrated electronic control circuit comprises a microcontroller connected to at least one volatile memory, at least one input/output port, a plurality of control devices, and an electronic non-volatile memory device comprising a non-volatile memory cell matrix linked to a control register, and a switch element connected between a voltage reference and the cell matrix to enable the program mode of the cell matrix under control by the microcontroller.