Reference Design Library > AC/DC and DC/DC Conversion > AC/DC SMPS - Single Output > DAK-85: 2W, 6V @ 330mA, 90 ~ 265 VAC

DAK-85: 2W, 6V @ 330mA, 90 ~ 265 VAC

Summary

This document describes a universal input charger power supply designed to replace linear transformer based chargers/adapters in low power applications. The power supply utilizes a LinkSwitch-LP IC, LNK564P. The document contains the power supply specification, schematic, bill of materials, transformer documentation, printed circuit layout, and performance data.

The LinkSwitch-LP IC has been developed to replace linear transformers in low power charger applications. The integrated 700 V switching MOSFET and ON/OFF control function achieve very high efficiency operation under all load conditions with simple bias winding voltage feedback. No-load and operating efficiency performance exceeds all international energy efficiency standards either present or proposed in the future.

Thermal shutdown is included as a minimum requirement to match the safety thermal cut out (thermal fuse) in linear transformers. The IC’s intelligent thermal shutdown feature is specified with a very tight tolerance (142 °C +/-5%) and includes a hysteretic auto recovery feature to automatically restart the power supply while maintaining the average pcb temperature at safe levels under all conditions. This auto-recovery is designed to eliminate the potential for field returns since the power supply automatically recovers when ambient temperatures return to the normal operating range.

Specifications

Manufacturer Power Integrations
Category AC/DC and DC/DC Conversion
Sub-Category AC/DC SMPS - Single Output
Eval Board Part Number 596-1104-ND
Eval Board Supplier Power Integrations
Eval Board Board not Stocked
AC Voltage 115 V
230 V
Universal (115 / 230V)
Outputs and Type 1 Isolated
Voltage Out 6 V
Current Out 330 mA
Output Power 2 W
Features Frequency Jitter for EMI
Open Circuit Protection
Short Circuit Protection
Thermal Protection
Efficiency @ Conditions >66%, 115V in, 6V @ 0.75 ~ 2 A
>65%, 230V in, 6V @ 1 ~ 2 A
No-load Input Power @ Voltage 110 mW @ 115 V
140 mW @ 230 VAC
Switching Frequency 100 kHz
Internal Switch Yes
Component Count + Extras 14 + 3
Voltage In 90 ~ 265 VAC
Design Author Power Integrations
Application / Target Market Cell Phones
Power: AC Adapters
Main I.C. Base Part LNK564P
Date Created By Author 2005-10
Date Added To Library 2018-06

Support Documents & Media

LNK562 - 564 - Datasheet DAK-85 - User Guide

Media

DAK_85_Schematic_Full.png DAK_85_EPR_85_Populated_Board.JPG DAK_85_Thermals_Full.jpg DAK_85_Chart_2_Full.png DAK_85_Chart_1_Full.png