概要

The R2A20112A controls a boost converter to provide an active power factor correction. The R2A20112A adopts critical conduction mode for power factor correction and realizes high efficiency and a low switching noise by zero current switching. Interleaving function improves ripple current on input or output capacitor by 180 degrees phase shift. Soft-star, the feedback loop short detection, two mode over-voltage-protection, over-current-protection, Over current ON/OFF timer protection for boost Diode short and slave ZCD open detection are built in the R2A20112A, and can constitute a power supply system of high reliability with few external parts.

  • Absolute Maximum Ratings
    • Supply voltage Vcc: 24 V
    • Junction temperature Tj: –40 to +150°C
  • Electrical Characteristics
    • VREF output voltage Vref: 5.0 V ± 1.5%
    • UVLO operation start voltage Vuvlh: 10.5 V ± 0.7 V
    • UVLO operation shutdown voltage Vuvll: 9.3 V ± 0.5 V
    • UVLO hysteresis voltage Hysuvl: 1.2 V ± 0.5 V
  • Package
    • Pb-free SOP-16
  • Functions
    • Boost converter control with critical conduction mode
    • Interleaving control
    • Soft start function for the reference voltage of Error Amp
    • Two mode PFC output Over-voltage-protection
      • Mode1: Dynamic OVP corresponding to a voltage rise by dynamic load change.
      • Mode2: Static OVP corresponding to over-voltage in stable.
    • PFC output Dynamic-under-voltage-protection (DUVP)
    • Feedback loop open/short detection
    • Master and Slave independence over-current-protection
    • 280 μs restart timer
    • Slave ZCD signal open detection
    • Over current ON/OFF timer protection for boost Diode short

ドキュメント

設計・開発

ECADモデル

[製品選択]テーブル内の製品名をクリックするとSamacSysが提供する回路図シンボル、PCBフットプリント、3D CADモデルがご確認いただけます。 お探しのシンボルやモデルが見つからない場合、Webサイトから直接リクエストできます。

ECADモデルを調べる
Diagram of ECAD Models

製品選択

    Processing table
    Pkg. Type
    Carrier Type
    Price (USD) | 1ku
    ご購入 / サンプル
    型名
    R2A20112ASP#W0
    circleアクティブ
    memory
    view_in_ar
    サンプル入手可能
    今すぐ購入する
    		SOP サンプルを入手,
    Parametric Table tips

    Tips for Using This Parametric Table:

    • Hide Filters button in header: Collapse or expands filters
    • Column sort buttons in header: Sort Column alphabetically / numerically descending or ascending
    • Reset button in header: Reset all filters to the page default
    • Full Screen button in header: Expand the table to full screen view (user must close out of full screen before they can interact with rest of page)
    • Export button in header: Export the filtered results of the table to an Excel document
    • Filter parts search bar in header: Type to filter table results by part number
    • Hide column button in column headers: Select to hide columns in table
    • AND / OR toggle switches in header: Toggles the logic of this particular filter to be “AND” or “OR” logic for filtering results
    • Multiselect checkboxes at beginning of each row in table: Select these checkboxes to compare products against each other
    • Document icon next to product name in row: View the featured document for this product
    • Chip icon next to the right of the document icon in row: View the block diagram for this product
    • Cart icon to the right of the chip icon: Indicates that samples are available for this product