RDK-91: 12W, 12V @ 1A, 85 ~ 265VAC

Summary

This kit includes a universal input, 12 V, 1 A flyback power supply using a TNY278P device from the TinySwitch-III family of ICs. It contains the complete specification of the power supply, a detailed circuit diagram, the entire bill of materials required to build the supply, extensive documentation of the power transformer, along with test data and oscillographs of the most important electrical waveforms.

The board provides a number of user configurable options which are designed to demonstrate the features and flexibility of the TinySwitch-III family. These include easy adjustment of the device current limit for increased output power or higher efficiency operation, and a latched output overvoltage shutdown.

Specifications

Manufacturer	Power Integrations
Category	AC/DC and DC/DC Conversion
Sub-Category	AC/DC SMPS - Single Output
Eval Board Part Number	596-1194-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	12 V
Current Out	1 A
Output Power	12 W
Features	Frequency Jitter for EMI Short Circuit Protection Shutdown, Enable, Standby Thermal Protection Under Voltage Protection, Brown-Out
Efficiency @ Conditions	>78%, 230V in, 12V @ 0.5 ~ 1 A >78%, 115 VAC, 12V @ 0.5 ~ 1 A
No-load Input Power @ Voltage	28 mW @ 115 V (w/ Bias) 38 mW @ 230 V (w/ Bias) 65 mW @ 115 V (w/o Bias) 120 mW @ 230 V (w/o Bias)
Switching Frequency	132 kHz
Internal Switch	Yes
Component Count + Extras	27 + 5
Voltage In	85 ~ 265 VAC
Design Author	Power Integrations
Application / Target Market	Battery Chargers Power: AC Adapters
Main I.C. Base Part	TNY278
Date Created By Author
Date Added To Library	2020-05