Medium Voltage Three-level Converters for the Grid
... converters (VSC) instead of 2L-VSCs in order to improve the figures of switch power losses, harmonic distortion, dv/dt, and common mode voltage/current [5]. In the literature, there are three main ML-VSC topologies, which are neutral point clamped (NPC) [6], flying capacitor (FC) [7], and cascaded H ...
... converters (VSC) instead of 2L-VSCs in order to improve the figures of switch power losses, harmonic distortion, dv/dt, and common mode voltage/current [5]. In the literature, there are three main ML-VSC topologies, which are neutral point clamped (NPC) [6], flying capacitor (FC) [7], and cascaded H ...
Single Hot-Swap Power Controllers with Circuit
... ENABLE or ENABLE – ENABLE for TPS2330 is active-low. ENABLE for TPS2331 is active-high. When the controller is enabled, GATE voltage powers up to turn on the external MOSFETs. When the ENABLE pin is pulled high for TPS2330 or the ENABLE pin is pulled low for TPS2331 for more than 50 μs, the gate of ...
... ENABLE or ENABLE – ENABLE for TPS2330 is active-low. ENABLE for TPS2331 is active-high. When the controller is enabled, GATE voltage powers up to turn on the external MOSFETs. When the ENABLE pin is pulled high for TPS2330 or the ENABLE pin is pulled low for TPS2331 for more than 50 μs, the gate of ...
LT4256-1/LT4256-2 - Positive High Voltage Hot Swap
... Pulsing UV low for a minimum of 5µs after a current limit fault cycle resets the fault latch (LT4256-1) and allows the part to turn back on. This command is only accepted after TIMER has discharged below 0.65V. To disable UV sensing, connect UV to a voltage beween 5V and 44V. FB (Pin 2): Power Good ...
... Pulsing UV low for a minimum of 5µs after a current limit fault cycle resets the fault latch (LT4256-1) and allows the part to turn back on. This command is only accepted after TIMER has discharged below 0.65V. To disable UV sensing, connect UV to a voltage beween 5V and 44V. FB (Pin 2): Power Good ...
Power electronics lab manual-without readings
... Initially potentiometer kept at minimum position so lap does not glow at this instant. ...
... Initially potentiometer kept at minimum position so lap does not glow at this instant. ...
The Effect of the Distance Between Metal Spheres on the
... number of materials is directly proportional to the potential differences, or voltage, across the materials” (Ohm's law, 2010). Ohm determined a mathematical formula for his law, which is that voltage equals resistance times current (Ohm’s law, 1996). The standard unit of measure of resistance was e ...
... number of materials is directly proportional to the potential differences, or voltage, across the materials” (Ohm's law, 2010). Ohm determined a mathematical formula for his law, which is that voltage equals resistance times current (Ohm’s law, 1996). The standard unit of measure of resistance was e ...
LM5022 60-V Low-Side Controller for Boost and
... The LM5022 contains an internal high-voltage startup regulator that allows the VIN pin to be connected directly to line voltages as high as 60V. The regulator output is internally current limited to 35 mA (typical). When power is applied, the regulator is enabled and sources current into an external ...
... The LM5022 contains an internal high-voltage startup regulator that allows the VIN pin to be connected directly to line voltages as high as 60V. The regulator output is internally current limited to 35 mA (typical). When power is applied, the regulator is enabled and sources current into an external ...
LMV712 LOW-POWER LOW-NOISE HIGH-OUTPUT RRIO DUAL OPERATIONAL AMPLIFIER WITH INDEPENDENT SHUTDOWN FEATURES
... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant ...
... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant ...
SIFT Scanner System
... Silicon thickness is 30 um. Laser spot size is 1 mm. High Frequency Magnetic Induction By scanning a miniature induction coil over the device, as shown in figure 10, package level shorts can be mapped. The spatial resolution is currently limited to about 2 mm based on the frequency used (10-20 MHz). ...
... Silicon thickness is 30 um. Laser spot size is 1 mm. High Frequency Magnetic Induction By scanning a miniature induction coil over the device, as shown in figure 10, package level shorts can be mapped. The spatial resolution is currently limited to about 2 mm based on the frequency used (10-20 MHz). ...
W. Inam, K.K. Afridi and D.J. Perreault, “Variable Frequency Multiplier Technique for High Efficiency Conversion Over a Wide Operating Range,” IEEE Journal of Emerging and Selected Topics in Power Electronics , (to appear).
... inverter and/or rectifier are used to provide additional sets of operating characteristics for the converter to achieve and maintain high performance across a wide operating range. Frequency multiplier circuits are often used in extreme highfrequency RF applications (e.g., where transistor fT is a c ...
... inverter and/or rectifier are used to provide additional sets of operating characteristics for the converter to achieve and maintain high performance across a wide operating range. Frequency multiplier circuits are often used in extreme highfrequency RF applications (e.g., where transistor fT is a c ...
MAX3311E/MAX3313E ±15kV ESD-Protected, 460kbps, 1µA, RS-232-Compatible Transceivers in µMAX General Description
... nominal value. The capacitor’s equivalent series resistance (ESR) usually rises at low temperatures and influences the amount of ripple on V-. To reduce the output impedance at V-, use larger capacitors (up to 10µF). Bypass VCC to ground with at least 0.1µF. In applications sensitive to power-supply ...
... nominal value. The capacitor’s equivalent series resistance (ESR) usually rises at low temperatures and influences the amount of ripple on V-. To reduce the output impedance at V-, use larger capacitors (up to 10µF). Bypass VCC to ground with at least 0.1µF. In applications sensitive to power-supply ...
Low-Cost Programmable Battery Dischargers and Application in
... resistance of the MOSFET in that way that V1 is equal to V2. Therefore, the control voltage V1 also is equal to the current in the circuit due to the used resistor of one ohm (Fig.1). In other words, a control voltage of 0-5V will generate equivalent currents of 0-5A (see [14] for more details). As ...
... resistance of the MOSFET in that way that V1 is equal to V2. Therefore, the control voltage V1 also is equal to the current in the circuit due to the used resistor of one ohm (Fig.1). In other words, a control voltage of 0-5V will generate equivalent currents of 0-5A (see [14] for more details). As ...
Resistive opto-isolator
Resistive opto-isolator (RO), also called photoresistive opto-isolator, vactrol (after a genericized trademark introduced by Vactec, Inc. in the 1960s), analog opto-isolator or lamp-coupled photocell, is an optoelectronic device consisting of a source and detector of light, which are optically coupled and electrically isolated from each other. The light source is usually a light-emitting diode (LED), a miniature incandescent lamp, or sometimes a neon lamp, whereas the detector is a semiconductor-based photoresistor made of cadmium selenide (CdSe) or cadmium sulfide (CdS). The source and detector are coupled through a transparent glue or through the air.Electrically, RO is a resistance controlled by the current flowing through the light source. In the dark state, the resistance typically exceeds a few MOhm; when illuminated, it decreases as the inverse of the light intensity. In contrast to the photodiode and phototransistor, the photoresistor can operate in both the AC and DC circuits and have a voltage of several hundred volts across it. The harmonic distortions of the output current by the RO are typically within 0.1% at voltages below 0.5 V.RO is the first and the slowest opto-isolator: its switching time exceeds 1 ms, and for the lamp-based models can reach hundreds of milliseconds. Parasitic capacitance limits the frequency range of the photoresistor by ultrasonic frequencies. Cadmium-based photoresistors exhibit a ""memory effect"": their resistance depends on the illumination history; it also drifts during the illumination and stabilizes within hours, or even weeks for high-sensitivity models. Heating induces irreversible degradation of ROs, whereas cooling to below −25 °C dramatically increases the response time. Therefore, ROs were mostly replaced in the 1970s by the faster and more stable photodiodes and photoresistors. ROs are still used in some sound equipment, guitar amplifiers and analog synthesizers owing to their good electrical isolation, low signal distortion and ease of circuit design.