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UCC28502DWTR

UCC28502DWTR
Mfr. #:
UCC28502DWTR
Descripción:
IC PFC CTRLR AVERAGE CURR 20SOIC
Ciclo vital:
Nuevo de este fabricante.
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UCC28502DWTR Ficha de datos
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UCC28502DWTR más información UCC28502DWTR Product Details
Atributo del producto
Valor de atributo
Tags
UCC28502D, UCC28502, UCC2850, UCC285, UCC28, UCC2, UCC
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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 BiCMOS PFC/PWM Comb Controller
***i-Key
IC PFC CTRLR AVERAGE CURR 20SOIC
***as Instruments
The UCC2850x family provides all of the control functions necessary for an active power-factor-corrected preregulator and a second-stage dc-to-dc converter. The controller achieves near-unity power factor by shaping the ac input line current waveform to correspond to the ac input-line voltage using average current-mode control. The dc-to-dc converter uses peak current-mode control to perform the step-down power conversion. The PFC stage is leading-edge modulated while the second stage is trailing-edge synchronized to allow for minimum overlap between the boost and PWM switches. This reduces ripple current in the bulk-output capacitor.In order to operate with over three-to-one range of input-line voltages, a line feedforward (VFF) is used to keep input power constant with varying input voltage. Generation of VFF is accomplished using IAC in conjunction with an external single-pole filter. This not only reduces external parts count, but also avoids the use of high-voltage components, offering a lower-cost solution. The multiplier then divides the line current by the square of VFF. The UCC2850x PFC section incorporates a low offset-voltage amplifier with 7.5-V reference, a highly-linear multiplier capable of a wide current range, a high-bandwidth, low offset-current amplifier, with a novel noise-attenuation configuration, PWM comparator and latch, and a high-current output driver. Additional PFC features include over-voltage protection, zero-power detection to turn off the output when VAOUT is below 0.33 V and peak current and power limiting. The dc-to-dc section relies on an error signal generated on the secondary-side and processes it by performing peak current mode control. The dc-to-dc section also features current limiting, a controlled soft-start, preset operating range with selectable options, and 50% maximum duty cycle. The UCC28500 and UCC28502 have a wide PFC-UVLO threshold (16.5 V/10 V) for bootstrap bias supply operation. The UCC28501 and UCC28503 are designed with a narrow UVLO range (10.5 V/10 V) more suitable for fixed bias operation. The UCC28500 and UCC28501 have a narrow UVLO threshold for PWM stage (to allow operation down to 75% of nominal bulk voltage), while the UCC28502 and UCC38503 are configured for a much wider operation range for the PWM stage (down to 50% of bulk nominal voltage). Available in 20-pin N and DW packages.
Parte # Descripción Valores Precio
UCC28502DWTR
DISTI # UCC28502DWTR-ND		IC PFC CTRLR AVERAGE CURR 20SOIC
RoHS: Compliant
Min Qty: 2000
Container: Tape & Reel (TR)		Limited Supply - Call
    UCC28502DWTRG4
    DISTI # UCC28502DWTRG4-ND    		IC PFC CTRLR AVERAGE CURR 20SOIC
    RoHS: Compliant
    Min Qty: 2000
    Container: Tape & Reel (TR)    		Limited Supply - Call
      Imagen Parte # Descripción
      UCC28503DWTR

      Mfr.#: UCC28503DWTR

      OMO.#: OMO-UCC28503DWTR

      		 Power Factor Correction - PFC BICMOS PFC/PWM COMBINATION CONTROLLER
      UCC28500DWTR

      Mfr.#: UCC28500DWTR

      OMO.#: OMO-UCC28500DWTR

      		 Power Factor Correction - PFC BICMOS PFC/PWM COMBINATION CONTROLLER
      UCC28512DWRG4

      Mfr.#: UCC28512DWRG4

      OMO.#: OMO-UCC28512DWRG4

      		 Power Factor Correction - PFC Advanced PFC/PWM Comb Controller
      UCC28500DWG4

      Mfr.#: UCC28500DWG4

      OMO.#: OMO-UCC28500DWG4

      		 Power Factor Correction - PFC BiCMOS PFC/PWM Comb Controller
      UCC28516DWRG4

      Mfr.#: UCC28516DWRG4

      OMO.#: OMO-UCC28516DWRG4

      		 Power Factor Correction - PFC Advanced PFC/PWM Comb Controller
      UCC28502DWG4

      Mfr.#: UCC28502DWG4

      OMO.#: OMO-UCC28502DWG4-TEXAS-INSTRUMENTS

      		 IC PFC CTRLR AVERAGE CURR 20SOIC
      UCC28516NG4

      Mfr.#: UCC28516NG4

      OMO.#: OMO-UCC28516NG4-TEXAS-INSTRUMENTS

      		 IC PFC/PWM COMB CTRLR 20DIP
      UCC28502DWTRG4

      Mfr.#: UCC28502DWTRG4

      OMO.#: OMO-UCC28502DWTRG4-TEXAS-INSTRUMENTS

      		 IC PFC CTRLR AVERAGE CURR 20SOIC
      UCC28503DWTRG4

      Mfr.#: UCC28503DWTRG4

      OMO.#: OMO-UCC28503DWTRG4-TEXAS-INSTRUMENTS

      		 IC PFC CTRLR AVERAGE CURR 20SOIC
      UCC28513DWR

      Mfr.#: UCC28513DWR

      OMO.#: OMO-UCC28513DWR-TEXAS-INSTRUMENTS

      		 Power Factor Correction - PFC Advanced PFC/PWM Comb Controlle
      Disponibilidad
      Valores:
      Available
      En orden:
      5000
      Ingrese la cantidad:
      El precio actual de UCC28502DWTR es solo de referencia, si desea obtener el mejor precio, envíe una consulta o envíe un correo electrónico directo a nuestro equipo de ventas [email protected]
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      Debido a la escasez de semiconductores a partir de 2021, el precio inferior es el precio normal antes de 2021. Envíe una consulta para confirmar.
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