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iW662 - AC/DC Secondary-Side Synchronous Rectification and Rapid Charge Interface Controller

Description

The iW662 is an AC/DC secondary-side combo controller for Qualcomm® Quick ChargeTM 3.0 (QC3.0) which includes USB interface, secondary-to-primary communication and synchronous rectification functions in a single IC.

Features

  • XM-Comm proprietary secondary-to-primary digital communication transmits all information for rapid charge without an optocoupler: output voltage requests, output current limits, output voltage undershoot, over-voltage protection, and other fault and reset signals.
  • Lossless MOSFET VDS sensing for SR timing control with digital adaptive turn-off control.
  • Optimized 5V MOSFET gate driver.
  • High-voltage drain sensing up to 100V with no additional external clamp.

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Full PDF Text Transcription

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iW662 AC/DC Secondary-Side Synchronous Rectification and Rapid ChargeTM Interface Controller for Qualcomm® Quick Charge™ 3.0 1 Description The iW662 is an AC/DC secondary-side combo controller for Qualcomm® Quick ChargeTM 3.0 (QC3.0) which includes USB interface, secondary-to-primary communication and synchronous rectification functions in a single IC. The iW662 resides on the secondary side of an AC/DC power supply and allows the adapter to be configured for multi-level output voltages from 3.6V to 12V in 200mV increments, depending on the voltage requested by the mobile device (MD). It can be used in Dialog’s primary-side controlled AC/ DC systems to achieve fast voltage transition, low noload power consumption, and fast dynamic load response.
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