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UC2855ADWTRG4

UC2855ADWTRG4
Mfr. #:
UC2855ADWTRG4
Descrizione:
IC PFC CTRLR AVERAGE CURR 20SOIC
Ciclo vitale:
Nuovo da questo produttore.
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UC2855ADWTRG4 maggiori informazioni UC2855ADWTRG4 Product Details
Attributo del prodotto
Valore attributo
Tags
UC2855AD, UC2855A, UC2855, UC285, UC28, UC2
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Step1: Vacuum Packaging with PL
Step1:
Vacuum Packaging with PL
Step2: Anti-Static Bag
Step2:
Anti-Static Bag
Step3: Packaging Boxes
Step3:
Packaging Boxes
***ser
Power Factor Correction (PFC) ICs High Performance Preregulator
***ark
Power Factor Controller IC; Frequency:0.5MHz; Supply Voltage Max:20V; Package/Case:20-SOIC; No. of Pins:20; Operating Temperature Range:-40°C to +85°C; Leaded Process Compatible:Yes; Peak Reflow Compatible (260 C):Yes ;RoHS Compliant: Yes
***as Instruments
The UC3855A/B provides all the control features necessary for high power, high frequency PFC boost converters. The average current mode control method allows for stable, low distortion AC line current programming without the need for slope compensation. In addition, the UC3855 utilizes an active snubbing or ZVT (Zero Voltage Transition technique) to dramatically reduce diode recovery and MOSFET turn-on losses, resulting in lower EMI emissions and higher efficiency. Boost converter switching frequencies up to 500kHz are now realizable, requiring only an additional small MOSFET, diode, and inductor to resonantly soft switch the boost diode and switch. Average current sensing can be employed using a simple resistive shunt or a current sense transformer. Using the current sense transformer method, the internal current synthesizer circuit buffers the inductor current during the switch on-time, and reconstructs the inductor current during the switch off-time. Improved signal to noise ratio and negligible current sensing losses make this an attractive solution for higher power applications. The UC3855A/B also features a single quadrant multiplier, squarer, and divider circuit which provides the programming signal for the current loop. The internal multiplier current limit reduces output power during low line conditions. An overvoltage protection circuit disables both controller outputs in the event of a boost output OV condition. Low startup supply current, UVLO with hysteresis, a 1% 7.5V reference, voltage amplifier with softstart, input supply voltage clamp, enable comparator, and overcurrent comparator complete the list of features. Available packages include: 20 pin N, DW, Q, J, and L.
Parte # Descrizione Azione Prezzo
UC2855ADWTRG4
DISTI # UC2855ADWTRG4-ND		IC PFC CTRLR AVERAGE CURR 20SOIC
RoHS: Compliant
Min Qty: 2000
Container: Tape & Reel (TR)		Limited Supply - Call
    UC2855ADWTRG4
    DISTI # 595-UC2855ADWTRG4    		Power Factor Correction - PFC High Performance Preregulator
    RoHS: Compliant    		0
      Immagine Parte # Descrizione
      UC2855BDWTR

      Mfr.#: UC2855BDWTR

      OMO.#: OMO-UC2855BDWTR

      		 Power Factor Correction - PFC High Performance Preregulator
      UC2855BDWG4

      Mfr.#: UC2855BDWG4

      OMO.#: OMO-UC2855BDWG4

      		 Power Factor Correction - PFC High Performance Preregulator
      UC2855BNG4

      Mfr.#: UC2855BNG4

      OMO.#: OMO-UC2855BNG4-TEXAS-INSTRUMENTS

      		 Power Factor Correction - PFC High Performance Preregulato
      UC2855BDWG4

      Mfr.#: UC2855BDWG4

      OMO.#: OMO-UC2855BDWG4-TEXAS-INSTRUMENTS

      		 Power Factor Correction - PFC High Performance Preregulato
      UC2855ADWTR

      Mfr.#: UC2855ADWTR

      OMO.#: OMO-UC2855ADWTR-TEXAS-INSTRUMENTS

      		 IC PFC CTRLR AVERAGE CURR 20SOIC
      UC2855BDWTR/81363

      Mfr.#: UC2855BDWTR/81363

      OMO.#: OMO-UC2855BDWTR-81363-1190

      		 Nuovo e originale
      UC2855ANG4

      Mfr.#: UC2855ANG4

      OMO.#: OMO-UC2855ANG4-1190

      		 Power Factor Correction - PFC High Performance Preregulato
      UC2855ADW

      Mfr.#: UC2855ADW

      OMO.#: OMO-UC2855ADW-TEXAS-INSTRUMENTS

      		 IC PFC CTRLR AVERAGE CURR 20SOIC
      UC2855AN

      Mfr.#: UC2855AN

      OMO.#: OMO-UC2855AN-TEXAS-INSTRUMENTS

      		 Power Factor Correction - PFC High Performance Preregulato
      UC2855BDW

      Mfr.#: UC2855BDW

      OMO.#: OMO-UC2855BDW-TEXAS-INSTRUMENTS

      		 IC PFC CTRLR AVERAGE CURR 20SOIC
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      Available
      Su ordine:
      4500
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