TOP270VG

AC DC Converters, Offline Switchers Overview

The TOP270VG is an integrated off-line switcher from the TopSwitch-JX family, manufactured by Power Integrations. It incorporates a 725 V power MOSFET, high voltage switched current source, multi-mode PWM controller, oscillator, and thermal shutdown circuitry into a single monolithic device. The component utilizes silicon technology and operates at switching frequencies of 66 kHz or 132 kHz. It supports through-hole installation in a DIP-12 package. Electrical specifications include a maximum operating temperature of +150 °C and a minimum of -40 °C. The device features a typical operating supply current of 3.8 mA.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a 725 V rated power MOSFET with control circuitry to simplify design and meet derating requirements.
• Employs multi-mode PWM control to maximize efficiency across all load conditions.
• Includes comprehensive protection features such as auto-restart, output short-circuit, overcurrent, overload, and overvoltage protection.
• Features frequency jittering to reduce EMI filter costs and optimized line feed-forward for ripple rejection.

AC DC Converters, Offline Switchers Applications

• General purpose AC/DC converters
• Battery chargers
• Adapters

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix against official datasheets to confirm pinout and electrical characteristics. Confirm RoHS compliance status via manufacturer documentation. Ensure the DIP-12 through-hole package matches the target PCB footprint. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and avoid counterfeit components.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring high integration and low standby power consumption. The TopSwitch-JX series offers flexibility with selectable switching frequencies to optimize transformer size versus efficiency. Consider the thermal performance of the DIP-12 package relative to the required power output. Evaluate the need for primary-side regulation versus secondary sensing based on system accuracy requirements.

AC DC Converters, Offline Switchers Part Context

The TOP270VG belongs to the TopSwitch-JX family, which combines power switching and control functions into a single chip. This family is designed for cost-effective, high-efficiency power supplies. The device replaces discrete solutions by integrating the MOSFET, driver, and controller, reducing component count and assembly complexity in offline converter applications.

AC DC Converters, Offline Switchers Replacement Considerations

Consult official substitution guides for compatible parts within the TopSwitch-JX series. Verify pin compatibility and electrical ratings before replacing existing inventory. No direct substitute part numbers are confirmed in the provided data.