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RDK-378: 82mA @ 85V Max, 190 ~ 265VAC in

Summary

This document describes a cost-effective power supply utilizing the LYTSwitchTM-0 family (LYT0006D) in a highly compact buck topology.

This power supply operates over an input voltage range of 190 VAC to 265 VAC. The DC bus voltage is high enough to support an 85 V output when using a buck topology - in a buck converter the output voltage must always be lower than the input voltage. The output voltage is also limited by the maximum duty cycle of the LYTSwitch-0 (which also requires the input voltage to be larger than the output voltage).

The reference design is not limited for retrofit lamp application; the design layout can be easily modified to fit in LED tube or ballast applications.

Specifications

Manufacturer	Power Integrations
Category	Lighting
Sub-Category	LED Drivers - AC / Offline
Eval Board Part Number	596-1590-ND
Eval Board Supplier	Power Integrations
Eval Board	Normally In Stock
AC Voltage	230 V
Outputs and Type	1 Non-Isolated
Current Out	82 mA
Voltage Out (Max)	85 V
Efficiency @ Conditions	>91%, 190 ~ 252 VACin, @85 Vout >91%, 190 ~ 244 VACin, @ 82 Vout >91%, 190 ~ 239 VACin, @ 88 Vout
Features	Current Limit (Adj. or Fixed) Frequency Jitter for EMI Open Circuit Protection PFC Short Circuit Protection Thermal Protection Under Voltage Protection, Brown-Out
Switching Frequency	66 kHz
Component Count + Extras	16 + 5
Design Author	Power Integrations
Application / Target Market	LED Commercial Lighting LED Home Lighting
Main I.C. Base Part	LYT0006
Voltage In	190 ~ 265 VAC
Power Factor
Standard(s)
Date Created By Author	2013-10
Date Added To Library	2014-06