RDK-669: 5W, 5V @ 1A, 85~265 VAC in

Summary

The RDK-669 Evaluation board using the LNK625DG IC that provides constant voltage (CV) performance. The circuit is designed to operate from 85 VAC to 265 VAC input, with an output voltage of 5 V providing a maximum load current of 1 A. It consumes very little standby power and uses no Y capacitor but still meet stringent EMI requirements.

The LNK625DG IC monolithically integrates the 700 V power MOSFET switch and controller, which consists of an oscillator, feedback (sense and logic) circuit, 6 V regulator, BYPASS (BP) pin programming functions, over-temperature protection, frequency jittering, current limit circuit and leading-edge blanking.

The LinkSwitch-CV family of devices has been developed to cost effectively replace all existing solutions in low power adapter applications. It is optimized for constant voltage (CV) adapter applications while using minimal external parts including the complete elimination of the optocoupler and shunt regulator.

Specifications

Manufacturer	Power Integrations
Category	AC/DC and DC/DC Conversion
Sub-Category	AC/DC SMPS - Single Output
Eval Board Part Number	596-RDK-669-ND
Eval Board Supplier	Power Integrations
Eval Board	Normally In Stock
AC Voltage	Universal (115 / 230V)
Outputs and Type	1 Isolated
Voltage Out	5 V
Current Out	1 A
Output Power	5 W
Features	Current Limit (Adj. or Fixed) Frequency Jitter for EMI LDO Regulator(s), On-Chip Open Circuit Protection Reset Function Short Circuit Protection Shutdown, Enable, Standby Temperature Compensation Thermal Protection
Efficiency @ Conditions	>76%, 230V in, 5V @ 700 ~ 1000 mA >75%, 115V in, 5V @ 500 ~ 1000 mA
No-load Input Power @ Voltage	<57 mW @ 115 V <70 mW @ 230 V
Switching Frequency	100 kHz
Internal Switch	Yes
Component Count + Extras	27 + 4
Voltage In	85 ~ 265 VAC
Design Author	Power Integrations
Application / Target Market	DVD/Blu-ray Players HMI Interfaces Power: AC Adapters Power: Auxiliary Power Supply Set-Top Boxes White Goods
Main I.C. Base Part	LNK625
Date Created By Author	2020-06
Date Added To Library	2020-12