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Adaptive Voltage Position Monitor


High efficiency, ultra-low standby, ultra-fast dynamic load response

The iW628 is a precision voltage reference used to quickly detect voltage drops on the output of an AC/DC power supply and provide instantaneous feedback to the controller in order to improve the dynamic loop response of the overall power supply.

The device consumes a minimum amount of current, allowing the overall power supply to maintain no-load power consumption levels below 20mW. As a complement to Dialog's family of PrimAccurate™ AC/DC controllers, the iW628 helps improve the already high performing AC/DC controllers while eliminating additional secondary-side components normally required to achieve similar levels of performance.

Companion product to iW1766C1, iW1767


Fast Response Time to Voltage Changes

Less than 100uA of "Normally-Off" cut-off current during normal operation

Wide Input Voltage Range of 2.5V to 15V (at DRV pin)

Built-in Opto-coupler LED Driver

  • Minimum 2mA Driver Current


AC/DC Power Adapters

AC/DC Networking and Embedded Applications

Precision Voltage Reference

Block Diagrams


Typical applications diagram


Functional block diagram

To order a sample of any of our products, please complete the following form. We will provide up to five parts free of charge. Our sales department will provide pricing for samples orders exceeding five parts.

Sample Request Form

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Product Briefs and Summaries
Name Date Version
iW628 Product Summary (314.61 KB) 12/08/2015 1.0