Supplier: OMEGA Engineering, Inc.
Description: The 3540M/MO step motor drivers are microstepping drives with up to 12,800 steps per revolution, step phase sequencer with MOSFET three state switching amplifiers and optoisolated circuits. Both drives include 5 optically isolated inputs, and the 3540MO features external speed control, tach output
- Drive Type: Bipolar Stepper Motor, Microstepping Motor
- Application Categories: Variable Speed Drive
- Supply Voltage (DC): 5 to 24 volts
- Maximum Output Voltage: 5 to 24 volts
Supplier: Intersil Corporation
Description: that run on battery or AC adapter power sources. Resistor programmed output voltage setpoint and capacitor programmed soft-start delay allow for fast and easy implementation. Robust integrated MOSFET drivers and Schottky bootstrap diode reduce the implementation area and lower component cost
Supplier: Intersil Corporation
Description: The ISL8201M is a 20V, 10A output current, variable output step-down power supply. Included in the 15mmx15mm package is a high performance PWM controller switching at 600kHz, power MOSFETs, an inductor, and all the passive components required for complete DC/DC power solution. The ISL8201M operates
- IC Package Type: Other
- Output Voltage (Volt): 0.6000 to 5 volts
- Input Voltage (VIN): 1 to 20 volts
Supplier: Fairchild Semiconductor
Description: The FAN7930B is an active power factor correction (PFC) controller for boost PFC applications that operate in critical conduction mode (CRM). It uses a voltagemode PWM that compares an internal ramp signal with the error amplifier output to generate a MOSFET turn-off signal. Because
Supplier: Fairchild Semiconductor
Description: The FL7930B is an active power factor correction (PFC) controller for boost PFC applications that operate in critical conduction mode (CRM). It uses a voltage-mode PWM that compares an internal ramp signal with the error amplifier output to generate a MOSFET turn-off signal. Because
- IC Package Type: SOIC
- Pin Count: 8
Supplier: ROHM Semiconductor USA, LLC
Description: such as Over Current Protection, Thermal shutdown and Under voltage lockout. The under voltage lockout and hysteresis can be set by external resistor. Features Wide input voltage range from 12V to 76V. Integrated 80V/3.5A/150m Ω NchFET. Current mode. Variable frequency from 50kHz to 750kHz
- Configuration / Function: Step-down (Buck)
- Regulated Output Voltage (Volt): 1 volts
- Output Current (IOUT): 3.5 to 6 amps
- Input Voltage (VIN): 12 to 76 volts
IC Switching Voltage Regulators - ISL62875PWM DC/DC Controller with VID Inputs for Portable GPU Core-Voltage Regulator -- ISL62875Supplier: Techwell, Inc.
Description: integrated MOSFET drivers and Schottky bootstrap diode reduce the implementation area and component cost. Intersils R3 Technology„¢ combines the best features of both fixed-frequency and hysteretic PWM control. The PWM frequency is 500kHz during static operation, becoming variable during
- Regulated Output Voltage (Volt): 0.5000 to 3.3 volts
- Output Current (IOUT): 30 amps
- Input Voltage (VIN): 3.3 to 25 volts
Amplifier and Comparator Chips - ISL6313BTwo-Phase Buck PWM Controller with Integrated MOSFET Drivers for Intel VR11 and AMD Applications -- ISL6313BSupplier: Techwell, Inc.
Description: Pulse Positioning (APP) Modulation Adaptive Phase Alignment (APA) Fully Differential, Continuous DCR Current Sensing Integrated Programmable Current Sense Resistors Accurate Load Line Programming Precision Channel Current Balancing Variable Gate Drive Bias: 5V to 12V Multi-Processor Compatible
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A multi-rate 9.953-12.5-GHz 0.2-/spl mu/m SiGe BiCMOS LC oscillator using a resistor-tuned varactor and a supply pushing cancellation circuit
The process variation of the MOSFET variable resistor parasitic capacitances results in a large variation of the var- actor tuning range and gain.
Anti-blocker design techniques for MOSFET-C filters for direct conversion receivers
In order to enhance the linearity of the triode-mode MOSFET vari- able resistors , the gates of the MOSFETs are driven by a charge pump in the cutoff control loop.
Wide Tunning Range 60 GHz VCO and 40 GHz DCO Using Single Variable Inductor
In Section III-A, a 60 GHz VCO using a VID with MOSFET variable resistors is described.
Characterization of the Noise Parameters of SiGe HBTs in the 70–170-GHz Range
Both analog and digital source impedance tuners, based on n- MOSFET variable resistors , n-MOSFET switches, and accumulation-mode varactors, have been designed and characterized.
A High Linearity 6th-order active R-MOSFET-C band-pass filter for power-line communication
In order to enhance the linearity of the triode-mode MOSFET variable resistors , driving the controlling voltages of the R-MOSFET in a resistor tuning schematic instead of the main signal schematic is chosen.
1.1 to 1.9GHz CMOS VCO for tuner application with resistively tuned variable inductor
Additional MOSFET variable resistor is used to control the amount of current flow in the secondary coil and thus achieve the effective inductance tuning.
Notice of Violation of IEEE Publication Principles A 10GHz 0.11μm CMOS Varactor-less LC-VCO for Multi-Standard 802.11a/b/g WLAN Using High Resolution Frequency...
A low process variation and high quality factor tuning capacitance was achieved by using only constant capacitors and variable resistor MOSFETs .
CR4 - Thread: Wind Turbine Regulators
My idea of using a simple variable ( mosfet ) resistor is simply to vary the braking effect on the rotor.
Slew rate induced distortion in switched-resistor integrators
tuning is possible using a MOSFET as variable resistor , and .
The study and implementation of a microprocessor-controlled demagnetizer
We take power MOSFETs as variable resistors (VR) in a demagnetizer.
A wideband low-noise variable-gain BiCMOS transimpedance amplifier
Amplifier topology with variable - resistor MOSFET 's included.
A simple technique for signal compression in high dynamic range, high speed X-ray pixel detectors
In this example two stages are operating in parallel to approximate at the best the desired shape, each one using a variable resistor through MOSFETs in order also to change resistor value during compression.
Efficient and Cost Effective Driver for HVAC Blower
But the main drawback lies in the very high power dissipation in the MOSFET used as variable resistor .
Design of High Frequency Integrated Analogue Filters
Most of these changes are necessary to compensate the process and temperature variations of the MOSFET resistors themselves.
CR4 - Thread: LED Dimming
A simple oscillator circuit (555 or modern equivalent) and MOSFET with a variable resistor to create a chopper circuit should be OK.