概要

The iW1782 is a high-performance AC/DC power supply controller for rapid charge that uses digital control technology to build peak current mode PWM flyback power supplies. The iW1782 is optimized to work with Renesas' iW636 secondary-side controller for Qualcomm® Quick Charge™ 3.0 technology to achieve fast and smooth voltage transition upon request by mobile devices (MD). When paired with the iW636, the iW1782 eliminates the discrete decoders on the primary side, minimizes the external component count and simplifies system designs. The iW636 can communicate with the iW1782 through one optocoupler for all the necessary rapid charge information including output voltage requests, output current limits, output voltage undershoot, and output overvoltage.

The iW1782 also incorporates Renesas' SmartDefender™ smart hiccup technology to address soft short circuits in charger cables and connectors helping to prevent excessive heat build-up and damage.

Qualcomm® Quick Charge™ is a product of Qualcomm Technologies, Inc.

iW1782 Typical Applications Diagram
iW1782 Typical Applications Diagram
  • Supports rapid charge technologies such as Qualcomm® Quick Charge™ 3.0 (QC3.0) technology to provide 3.6V to 12V in 200mV increments with user selected various output current limit combinations
  • Proprietary secondary-to-primary digital communication and built-in decoder eliminate discrete decoder and significantly simplify system design
  • Single optocoupler for all the rapid charge information: Output voltage request, output current limit, output voltage undershoot, and overvoltage protection
  • Tight multi-level constant-voltage and multi-level constant-current regulation with primary-side feedback and control
  • Ultra-low no-load power consumption with lowest system cost (<10mW at 230VAC with typical 5V 2A setting using Schottky diode rectifier; <20mW at 230VAC with typical 5V 2A setting using synchronous rectifier)
  • Fast dynamic load response (DLR) with secondary-side load transient detection
  • Proprietary optimized load adaptive maximum constant frequency PWM switching with quasi-resonant operation achieves best size, efficiency and common mode noise
  • Multi-mode PWM/PFM control improves efficiency at various load conditions
  • User-configurable 4-level cable drop compensation independent of output voltage
  • EZ-EMI® design enhances manufacturability
  • Built-in single-point fault protections against output short-circuit including soft short and half short, output overvoltage, and output overcurrent
  • SmartDefender™ smart hiccup technology helps address issues of soft shorts in cables and connectors by effectively reducing the average output power at fault conditions without latch
  • User-configurable external shutdown control
  • No audible noise over the entire operating range

アプリケーション

  • Rapid-charging AC/DC adapters for smart phones, tablets and other portable devices (3.6V - 12V, 1A - 3A).

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
    Moisture Sensitivity Level (MSL)
    ご購入 / サンプル
    型名
    IW1782-00
    circleアクティブ
    memory
    view_in_ar
    サンプル入手可能
    		 SOIC-8 Tape & Reel 1 サンプルを入手,
    IW1782-01
    circleアクティブ
    memory
    view_in_ar
    サンプル入手可能
    		 SOIC-8 Tape & Reel 1 サンプルを入手,
    IW1782-03
    circleアクティブ
    memory
    view_in_ar
    サンプル入手可能
    		 SOIC-8 Tape & Reel 1 サンプルを入手,
    iW1782-05
    circleアクティブ
    memory
    view_in_ar
    サンプル入手可能
    		 SOIC-8 Tape & Reel 1 サンプルを入手,
    iW1782-07
    circleアクティブ
    memory
    view_in_ar
    サンプル入手可能
    		 SOIC-8 1 サンプルを入手,
    iW1782-19
    circleアクティブ
    memory
    view_in_ar
    サンプル入手可能
    		 SOIC-8 Tape & Reel 1 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