TNY256Y

AC DC Converters, Offline Switchers Overview

The TNY256Y is an AC-DC converter from the TinySwitch-Plus family, integrating a 725 V power MOSFET with high-voltage switching current source, oscillator, PWM control, and thermal shutdown. It supports flyback topology with a switching frequency of 130 kHz and a maximum duty cycle of 66%. The device delivers up to 11 W at universal input (85–265 VAC) and 19 W at 230 VAC input. It operates within a temperature range of -40°C to +150°C.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a 725 V power MOSFET with advanced frequency jittering and internal oscillator control for enhanced performance.
• Features unique value proposition in power conversion by combining multiple control circuits into a single chip.
• Supports low dropout voltage regulation for efficient power delivery.

AC DC Converters, Offline Switchers Applications

• Universal input AC/DC converters
• Low power offline switchers
• Adapters requiring high efficiency

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific package type and pinout configuration against the official datasheet before procurement. Ensure that the selected variant meets the required thermal management specifications for the intended application environment. Confirm compliance with relevant safety standards if used in isolated power supplies.

AC DC Converters, Offline Switchers Selection Notes

Select the TNY256Y for applications requiring compact design and high efficiency in low-power offline switcher scenarios. Consider its integrated protection features such as thermal shutdown and current limiting when designing systems where reliability is critical. Evaluate the 725 V breakdown voltage suitability for the specific line voltage conditions.

AC DC Converters, Offline Switchers Part Context

The TNY256Y belongs to the TinySwitch-Plus family, which expands the power range of previous generations. This family is known for integrating power MOSFETs with control logic to reduce component count and system cost. The device is designed for high-efficiency power conversion in space-constrained applications.

AC DC Converters, Offline Switchers Replacement Considerations

Check for direct substitutes within the TinySwitch family or other Power Integrations series offering similar power ratings and voltage specifications. Verify compatibility with existing PCB layouts and thermal designs when considering alternative components.

AC DC Converters, Offline Switchers FAQ

What is the maximum output power of the TNY256Y?

The TNY256Y delivers up to 11 watts from a universal input and up to 19 watts from a 230 VAC input.

Does the TNY256Y include built-in protection features?

Yes, it includes thermal shutdown, current limiting, and other fault protections integrated into the single chip.