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: 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
- Device Type / Applications: LED Driver
- IC Package Type: SOIC
- Pin Count: 8
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
IC 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
- Regulator Category: Switching Regulator
- Regulated Output Voltage (Volt): 0.5000 to 3.3 volts
- Output Current (IOUT): 30 amps
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DC/DC Converters With Linear Regulators
Linear regulators (or voltage regulators) act as a series variable power resistor when they are connected between an unregulated voltage source and a load. Linear regulators are used to provide voltage stability (regulation) for the load. However do not confuse linear regulators with switching
Soft-Start Controller For Switching Power Supplies
driven by the power supply is capacitive, the problem is exaggerated due to the large transient currents required to charge the capacitive load. In extreme instances, the repeated high stress of start-up can result in catastrophic failures in the driver section, typically, the power MOSFET transistors
A Digital Constant Current Power LED Driver
be operated with an external oscillator The LED current is sampled using a resistor in series circuit to provide a higher operating frequency. with the source of the MOSFET in the buck circuit and A summary of the operating parameters used for amplified using a single op amp. The LED current
Designing with HV Microcontrollers
). TIPS ‘N TRICKS. IREG_MAX =. - ILOAD_MIN. RSER. As mentioned in the previous section, it is often. necessary to create a variable pass resistance, reduce. EQUATION 4: the variation in load current, or reduce variations in. VUNREG to find a pass resistor’s values that will work for. (VU_MIN - 5.0
Brushed DC Motor Fundamentals
the circuit. tor when it is rotating. Shorting the leads of the motor. inoperable. Pull-down resistors at each of the MOSFET. acts as a load of infinite magnitude bringing the motor
ePanorama.net - Circuits
connects to driver circuitry that provides an interface to the switching device or devices at the output. The swithing device is typically a MOS-FET or TRIAC. The followign circuit diagrams show typical block diagrams of triac and FET based SSR circuits: What are general specifications of SSRs
Interfacing a TC1047A Analog Output Temperature Sensor to a PICmicro (R) Microcontroller
. AN938. TC1047A FUNCTIONAL. combining the appropriate P and N junctions, as shown. DESCRIPTION. in Figure 2. A bipolar diode is used for the temperature. measurement because its electrical characteristics are. better than a MOSFET diode. The current and voltage. Creating a Temperature-Sensing Diode
High Power IR LED Driver Using the PIC16C781/782
during the first. lation of the IR LED, resulting in variable length packets. half of the cycle is the same as the peak current flow. of 38 kHz pulses (see Figure 1). Using a modulated. delivered during the second half. In addition, the volt-. carrier frequency gives IR remote controls several. age
More Information on: MOSFET Variable Resistor Top
Each of the two n- MOSFET variable resistors is replaced by two n- .
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 Resolutio...A low process variation and high quality factor tuning capacitance was achieved by using only constant capacitors and variable resistor MOSFETs .