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7626441 |
Drive circuit with BOT level shifter for transmitting an input signal and assigned method
A drive circuit in power electronic systems comprising a half-bridge circuit of two power switches, a first so-called TOP switch and a second so-called BOT switch, which are arranged in a series...
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7589570 |
System and method for synchronized current boosting
A circuit system and method are provided to modify a hard disk writer/driver pre-amplifier electronic circuit to synchronize current boosting control signals. The circuit system obtains a single...
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7589571 |
Capacitively coupled high side gate driver
An improved capacitor coupled floating gate drive circuit is revealed that provides an effective drive mechanism for a floating or high side switch without the use of level shifting circuits or...
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7583111 |
Method for driving a transistor half-bridge
A method drives a transistor half-bridge. The method includes measuring a delay time between an edge of an input signal and an corresponding edge of a phase signal, and saving the delay time as a...
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7570087 |
Switching drive circuit for soft switching
A switching drive circuit for soft switching is disclosed. It includes an input circuit to receive an input signal. A first delay circuit generates a first delay time in response to the enable of...
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7551008 |
Circuit for fixing peak current of an inductor and method thereof
The circuit for fixing the peak current of an inductor includes an operating current, a ramp-type boost converter and a comparator. The magnitude of the operating current is proportional to that of...
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7548097 |
Flyback current control
One embodiment of the invention includes a power driver system. The power driver system comprises a power transistor that is activated to provide power to a load and a switching circuit configured...
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7538587 |
Power semiconductor device
A power semiconductor device has first and second power switching elements connected in series, with flywheel diodes, and first and second driver circuits connected to gates of the first and second...
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7535268 |
Inductive load driving system
In an inductive load driving system, it is configured to comprise a first switching element that is inserted in a position between the external power supply and the inductive load, a second...
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7528636 |
Low differential output voltage circuit
A low differential output voltage circuit having a voltage generator and a differential output unit is provided. The voltage generator includes a first PMOS transistor, a first amplifier circuit, a...
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7518416 |
Method and apparatus for detecting switching current of magnetic device operated in continuous current mode
The present invention provides a method and apparatus for detecting a continuous current of a switching current. A current signal is produced in response to a switching current of the magnetic...
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7489166 |
Gate drive for lower switching noise emission
A gate drive circuit for driving the gate of a power transistor switch comprising a gate drive sourcing circuit supplying gate drive current to the power transistor switch, the gate drive sourcing...
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7477082 |
Method and circuit for driving H-bridge that reduces switching noise
An H-bridge drive circuit for reducing switching noises while preventing shoot-through current from flowing in the H-bridge circuit. The H-bridge drive circuit includes an H-bridge circuit for...
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7477088 |
Power supplies for driving h-bridges
An apparatus includes an integrated circuit that includes low side power supply circuitry that provides an output voltage for H-bridge circuitry. The low side power supply circuitry includes one...
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7468619 |
Electrical load drive device
A load drive device for driving an electrical load includes high-side and low-side transistors, and a switch. When the load is driven, each of the high-side and low-side transistors operates in a...
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7466169 |
Signal detecting device and method for inductive load
A signal detecting device detects, as analog voltage signals, a current flowing through an exciting coil of an electric power generator, a source voltage and a temperature of a regulator that...
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7463071 |
Level-shift circuit utilizing a single level-shift switch
A level-shift circuit for use with a half bridge in accordance with an embodiment of the present application includes an oscillator operable to provide a timing signal, a level-shift switch...
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7459945 |
Gate driving circuit and gate driving method of power MOSFET
A gate driving circuit and method which increases the switching frequency by use of a switching control circuit which controls operations of a first, second, third, and fourth switches. The...
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7453292 |
Resonant gate drive circuit with centre-tapped transformer
This invention relates to a resonant gate drive circuit for a power switching device, such as a MOSFET, that uses a center-tapped transformer to increase the driving gate voltage approximately...
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7453659 |
Circuit and method for write current driver
System and method for write current drivers for inductive heads used in mass storage drives. A preferred embodiment comprises a write current circuit coupled to an inductive write head, a MOS...
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7443211 |
Transmitter and transmission circuit
Transmitter and transmission circuit. For realizing a differential transmitter, a switch circuit is connected between two load transistors of two complementary MOS pairs. The switch circuit can...
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7417817 |
Write driver circuit for magnetic data storage systems
A write driver circuit for a magnetic storage medium includes a first write driver sub-circuit that has an output that communicates with a first node of a write head. The first write driver circuit...
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7408388 |
Switching power supply device, semiconductor integrated circuit device and power supply device
There are provided a switching power supply device performing a stable operation with fast response, a semiconductor integrated circuit device, and a power supply device. A capacitor is provided...
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7408313 |
Low power preamplifier writer architecture
A circuit is adapted to activate a writer head of a data storage media drive during both the boost periods as well as the steady state periods. The current supplied to the writer head during the...
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7378884 |
MOSFET for synchronous rectification
This invention discloses a new MOSFET device. The MOSFET device has an improved operation characteristic achieved by connecting a shunt FET of low impedance to the MOSFET device. The shunt FET is...
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7372649 |
Apparatus and method for applying write signals for driving a write head
An apparatus for use in applying write signals for driving a write head to effect writing information to a memory device; the write signals including a first write signal and a second write signal;...
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7368957 |
Capacitively coupled floating gate driver
High-performance low-power isolated bootstrapped gate drive apparatus and methods are disclosed for driving high-side and floating transistors. The gate drivers use edge-triggered...
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7365584 |
Slew-rate control apparatus and methods for a power transistor to reduce voltage transients during inductive flyback
Apparatus and methods that reduce the amount of conducted/radiated emissions from a power switch ( 200 ) when a transistor ( 210 ) is switched OFF are disclosed. In addition, apparatus and methods...
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7362146 |
Large supply range differential line driver
A differential transmission line driver with supplemental current sources that overcome switching anomalies and EMU issues when the logic state of the driver is switching. During a logic...
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7362148 |
Device for controlling a semiconductor element
A control device for controlling a load drive semiconductor element for driving a load has a test operation mode for measuring a leak current of the load drive semiconductor element. In the test...
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7358693 |
Motor drive control device
Disclosed is a motor drive control device which uses mechanical switches configured in an H-bridge shape and can protect the mechanical switches from being damaged and minimize a voltage chattering...
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7348811 |
Equalizing transceiver with reduced parasitic capacitance
A signaling circuit having reduced parasitic capacitance. The signaling circuit includes a plurality of driver circuits each having an output coupled to a first output node, and a plurality of...
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7341052 |
Power switching control device for electric systems
A power switching control device for electric systems such as an ignition device for internal combustion engines has a control circuit IC and a switching IC. A temperature sensor is provided in the...
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7310006 |
Semiconductor integrated circuit
To provide an output MOS transistor from breaking due to dump surge and counter electromotive, a semiconductor integrated circuit according to an embodiment of the invention includes an output MOS...
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7292074 |
Write driver with continuous impedance match and improved common mode symmetry
The present invention describes a voltage-mode boosting write driver circuit ( 160 ), comprising a plurality of inputs (WDP, WDN), a plurality of outputs (HWX, HWY), a transducer (L 2 ), a flex...
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7285991 |
Semiconductor device for controlling switching power supply and switching power supply unit using the same
A semiconductor device for controlling a switching power supply is provided, which can reduce power consumption at a light load of the switching power supply and improve the efficiency of the power...
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7285990 |
High-precision buffer circuit
A buffer circuit includes an input terminal operable to receive an input signal and an output terminal at which an output signal for the buffer circuit is provided. In the buffer circuit, three...
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7276954 |
Driver for switching device
A driver for a switching device has a plurality of driver circuits for driving the switching device and a control circuit. The control circuit selectively operates the driver circuits in response...
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7265591 |
CMOS driver with minimum shoot-through current
A CMOS driver with minimum shoot-through current is disclosed. The potential for shoot-through current may be eliminated or reduced with a break-before-make circuit driving an output stage. The...
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7256638 |
Series active filtering power line conditioner
The apparatus includes a series active continuous time voltage regulator operating in conjunction with a alternating current power source and one or more loads. The alternating current power source...
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7245163 |
Overcurrent limiting controller
A semiconductor device controller includes a current supply control unit for controlling a conduction state of a semiconductor device connected to a load in response to a control signal to supply...
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7236011 |
High-speed differential logic buffer
A circuit for a high speed digital buffer has an active load circuit connected to an output of the digital buffer. The active load circuit loads the buffer output with an active inductance to...
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7236041 |
Isolated gate driver circuit for power switching devices
Embodiments of isolated gate driver circuits are disclosed for driving high- and low-side switching devices for half- and full-bridge power converter topology. Disclosed circuits provide sufficient...
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7224135 |
Imposed current motor drive
A method for driving a motor by imposing the current in the motor by means of power current mirrors is presented. This allows driving the motor in current with higher accuracy and lower electrical...
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7199643 |
Hot swappable pulse width modulation power supply circuits
Hot swappable pulse width modulation power supply circuits preferably realized in integrated circuit form. The hot swap circuits provide for de-bouncing, controlled charging of the input capacitor...
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7199642 |
Battery-power-operated circuit
A source-voltage-operated circuit having: an electric power source; an operated circuit section operated according to a voltage supplied by the electric power source; a control-voltage-supplying...
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7190194 |
Active hybrid transformer circuit having a replica driver
In an active hybrid transformer circuit connected to both transmit and receive sides, a current driver is connected to a transmission path circuit through a common connection point of a load...
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7184232 |
Apparatus and method for driving a write head
An apparatus for driving a write head in response to a data signal includes: (a) a first drive unit coupled with the write head; (b) a second drive unit coupled with the write head; and (c) a...
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7176744 |
Semiconductor device
A gate discharge resistor part is connected to the gate of an IGBT (Insulated Gate Bipolar Transistor). A timer circuit has its output connected to the input of the gate discharge resistor part and...
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7157959 |
Method of forming a self-gated transistor and structure therefor
In one embodiment, a self-gated transistor includes a sensing portion that generates a sense signal that is used to drive the self-gated transistor.
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