Overview

The iW657P USB power delivery (USB PD) 3.0 interface controller resides on the secondary side of the AC/DC power supply and manages the communication between the power adapter and mobile device.

The iW657P works with Renesas' (iW1791, iW1797, and iW1799) RapidCharge™ primary-side controller and supports fast charging protocols, including USB PD 3.0, Qualcomm® Quick Charge™ 4+, and direct charging. It transmits all necessary information via an optocoupler to the primary side, including voltage requests, output current limits, output voltage undershoot, output overvoltage, and fault and reset signals. It also offers an optional secondary-side current sensing circuit to provide additional overload fault protection.

The iW657P also works with Renesas' iW676 synchronous rectifier, which eliminates the need for a parallel Schottky diode for higher efficiency and lower BOM cost.

iW1799/iW657P Typical Applications Diagram
iW1797/iW657P Typical Applications Diagram
iW1791/iW657P Typical Applications Diagram
iW657P Functional Block Diagram
iW1799/iW657P Typical Applications Diagram
iW1797/iW657P Typical Applications Diagram
iW1791/iW657P Typical Applications Diagram
iW657P Functional Block Diagram
  • Supports Multiple RapidCharge Protocols:
    • USB PD 3.0 PPS (Programmable Power Supply)
    • Qualcomm® Quick Charge™ 4+
    • Direct Charge
    • Other RapidCharge Protocols
  • USB-IF PD 3.0 certified (USB PD 3.0 + PPS)
  • Compatible with USB Type-C™ Rev. 1.2
  • Supports wide output voltage range from 3.3 to 21V
  • NMOS VBUS Switch Lowers System Cost
  • VCONN Support for Smart Cables
  • Integrated Current Sense
  • Single Optocoupler for All Rapid Charge Information
  • Low No-Load Power Consumption <20mW
  • High Efficiency up to 90%
  • Double-Layer Cable Protection:
    • Secondary side (iW657P): D+/D-/CC1/CC2 Overvoltage Protection; Optional Secondary-Side Current Sensing Circuit for Over-Load Fault Protection
    • Primary side (iW1791, iW1797, iW1799): Advanced Cable Fault Protection Reduces Average Output Power at Fault
  • Automatic AC Un-Plug Detection
    • Protects Phone Battery from Damage Due to High Voltage Exposure if Charger is Unplugged then Re-Plugged into Mains with Charging Cable Still Connected

Applications

  • USB PD 3.0 AC/DC Power Adapters for Smartphones, Tablets, Laptops and Other Mobile Devices
  • USB PD 3.0 Power Supplies for Set Top Boxes, Displays, Speakers
  • USB PD 3.0 in-the-wall receptacles
  • Lamps and lighting fixtures with USB PD 3.0 ports

Documentation

Design & Development

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

Explore ECAD Models
Diagram of ECAD Models

Product Options

    Processing table
    Pkg. Type
    Carrier Type
    Buy / Sample
    Part Number
    iW657P
    circleActive
    memory
    view_in_ar
    		Contact Us Contact Us
    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