UCC38050

AKTIV

Übergangsmodus-PFC-Controller mit 15,6 V/9,7 V UVLO und IEC61000-3-2-Konformität, -40 °C bis 85°C

Produktdetails

Vin (max) (V) 18 Operating temperature range (°C) 0 to 70 Control mode TM Topology Boost Rating Catalog Duty cycle (max) (%) 99
Vin (max) (V) 18 Operating temperature range (°C) 0 to 70 Control mode TM Topology Boost Rating Catalog Duty cycle (max) (%) 99
PDIP (P) 8 92.5083 mm² 9.81 x 9.43 SOIC (D) 8 29.4 mm² 4.9 x 6
  • Transition Mode PFC Controller for Low Implementation Cost
  • Industry Pin Compatibility With Improved Feature Set
  • Improved Transient Response With Slew-Rate Comparator
  • Zero Power Detect to Prevent Overvoltage Protection (OVP) During Light Load Conditions
  • Accurate Internal VREF for Tight Output Regulation
  • Two UVLO Options
  • OVP, Open-Feedback Protection, and Enable Circuits
  • ±750-mA Peak Gate Drive Current
  • Low Start-Up and Operating Currents
  • Lead (Pb)-Free Packages
  • Transition Mode PFC Controller for Low Implementation Cost
  • Industry Pin Compatibility With Improved Feature Set
  • Improved Transient Response With Slew-Rate Comparator
  • Zero Power Detect to Prevent Overvoltage Protection (OVP) During Light Load Conditions
  • Accurate Internal VREF for Tight Output Regulation
  • Two UVLO Options
  • OVP, Open-Feedback Protection, and Enable Circuits
  • ±750-mA Peak Gate Drive Current
  • Low Start-Up and Operating Currents
  • Lead (Pb)-Free Packages

The UCC38050 and UCC38051 are PFC controllers for low-to-medium power applications requiring compliance with IEC 1000-3-2 harmonic reduction standard. The controllers are designed for a boost preregulator operating in transition mode (also referred to as boundary-conduction mode or critical conduction-mode operation). They feature a transconductance voltage amplifier for feedback error processing, a simple multiplier for generating a current command proportional to the input voltage, a current-sense (PWM) comparator, PWM logic, and a totem-pole driver for driving an external FET.

In the transition mode operation, the PWM circuit is self-oscillating, with the turnon being governed by an inductor zero-current detector (ZCD pin), and the turnoff being governed by the current-sense comparator. Additionally, the controller provides features such as peak current limit, default timer, overvoltage protection (OVP) and enable.

The UCC38050 and UCC38051 are PFC controllers for low-to-medium power applications requiring compliance with IEC 1000-3-2 harmonic reduction standard. The controllers are designed for a boost preregulator operating in transition mode (also referred to as boundary-conduction mode or critical conduction-mode operation). They feature a transconductance voltage amplifier for feedback error processing, a simple multiplier for generating a current command proportional to the input voltage, a current-sense (PWM) comparator, PWM logic, and a totem-pole driver for driving an external FET.

In the transition mode operation, the PWM circuit is self-oscillating, with the turnon being governed by an inductor zero-current detector (ZCD pin), and the turnoff being governed by the current-sense comparator. Additionally, the controller provides features such as peak current limit, default timer, overvoltage protection (OVP) and enable.

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Technische Dokumentation

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Typ Titel Datum
* Data sheet UCC2805x, UCC3805x Transition Mode PFC Controller datasheet (Rev. G) PDF | HTML 05 Mai 2015
User guide PR320 UCC28050 100-W PFC Ballast Pre-Regulator 16 Aug 2004
Application note UCC38050 100W Critical Conduction (PFC) Reference Design (Rev. A) 03 Mai 2004
User guide 100-W Universal Line Input PFC Boost Converter Using the UCC38050 (Rev. B) 12 Feb 2004

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Evaluierungsplatine

UCC28051EVM — UCC28051-Evaluierungsmodul

UCC28051 Evaluation Module is a 100-W offline AC-DC voltage converter with power factor correction (PFC). The power module was designed to show how the UCC28051 could be configured in an off-line power factor corrected preregulator. The module was designed to operate over a universal input range (...)
Benutzerhandbuch: PDF
Berechnungstool

UCC38050-CALC — Mathcad-Berechnungstool für PFC-Controller im Übergangsmodus UCC38050

MathCAD application design tool for use with the UCC38050.
Gehäuse Pins Herunterladen
PDIP (P) 8 Optionen anzeigen
SOIC (D) 8 Optionen anzeigen

Bestellen & Qualität

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