概要

The iW1690 is a high-performance AC/DC controller designed to drive an external power bipolar junction transistor (BJT) for peak current mode PWM flyback power supplies. Ideal for power adapters for applications such as mobile computing and communications and standby power supplies in consumer electronics, the iW1690 offers no load power consumption of less than 150mW. As a PrimAccurate™ controller, which uses primary-side control algorithms, the iW1690 does not need any direct secondary-side feedback components, eliminating the need for optocouplers, and reducing component count and solution cost. Additional features include Renesas' proprietary EZ-EMI™ technology, quasi-resonant control for optimal efficiency at heavy loads, cable and connector voltage drop compensation options, and full protection from fault conditions. The iW1690 comes in seven different combinations of switching frequency (45kHz, 65kHz, or 75kHz) and cable compensation voltage (0mV to 412mV).

iW1690 Typical Applications Diagram
iW1690 Typical Applications Diagram
  • Primary-side feedback eliminates opto-isolators and simplifies design
  • Direct drive of BJT switching device
  • Multi-mode operation for the highest overall efficiency
  • Built-in cable drop compensation
  • Very tight output voltage regulation
  • No external compensation components required
  • Complies with CEC/EPA no load power consumption and average efficiency regulations
  • Built-in output constant-current control with primary-side feedback
  • Low start-up current (10μA typical)
  • Built-in soft start
  • Built-in short circuit protection and output overvoltage protection
  • Optional AC line under/overvoltage protection
  • Fixed switching frequency: 45kHz, 65kHz, or 75kHz
  • Dynamic base current control
  • PFM operation at light load
  • Built-in current sense resistor short protection

ドキュメント

= ピックアップ
分類 タイトル 日時
データシート
iW1690 Datasheet
PDF 837 KB
1件

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
    ご購入 / サンプル
    型名
    iW1690-00
    circleアクティブ
    memory
    view_in_ar
    		SOIC-8
    iW1690-02
    circleアクティブ
    memory
    view_in_ar
    		SOIC-8
    iW1690-03
    circleアクティブ
    memory
    view_in_ar
    		SOIC-8
    iW1690-05
    circleアクティブ
    memory
    view_in_ar
    		SOIC-8
    iW1690-07
    circleアクティブ
    memory
    view_in_ar
    		SOIC-8
    iW1690-08
    circleアクティブ
    memory
    view_in_ar
    		SOIC-8
    iW1690-09
    circleアクティブ
    memory
    view_in_ar
    		SOIC-8
    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