TOP222Y Converter Offline Boost, Buck, Flyback, Forward Topology 5.7V 1.2mA TO-220-3
The TOP222Y is part of the TOPSwitch family of integrated power conversion ICs, designed for offline switch-mode power supplies. It combines a high-voltage power MOSFET, PWM controller, oscillator, and protection circuitry into a single compact device. This integration significantly reduces external component count and simplifies circuit design, making it a popular choice for cost-effective and reliable power supply solutions.
This IC supports multiple topologies including boost, buck, flyback, and forward converters, giving designers flexibility in various applications. It operates directly from rectified AC mains and features intelligent control mechanisms such as auto-restart, thermal shutdown, and line protection. Its TO-220-3 package allows efficient heat dissipation, making it suitable for medium power applications like adapters, chargers, and consumer electronics power supplies.
Features:
- Integrated high-voltage power MOSFET.
- Built-in PWM controller and oscillator.
- Supports multiple topologies (boost, buck, flyback, forward).
- Auto-restart protection for fault conditions.
- Thermal shutdown protection.
- Reduced external component requirement.
- High efficiency power conversion.
- Direct operation from AC mains.
- Compact and reliable design.
- Internal current limiting.
Specifications:
| Parameter | Value |
|---|---|
| Supply Voltage | ~5.7V (control circuitry) |
| Input Type | Offline (AC-DC) |
| Control Current | ~1.2 mA |
| Package Type | TO-220-3 |
| Topologies Supported | Boost, Buck, Flyback, Forward |
| Operating Frequency | ~100 kHz |
| Output Power | Up to ~20W |
Pinout:
| Pin No. | Pin Name | Description |
|---|---|---|
| 1 | Control (C) | Feedback and control input |
| 2 | Source (S) | Ground reference |
| 3 | Drain (D) | High-voltage input |
Applications:
- AC-DC power supplies.
- Battery chargers.
- Adapters.
- Standby power supplies.
- Consumer electronics.
- Industrial SMPS.
- LED drivers.
Package Included:
- 1x TOP222Y Converter Offline Boost, Buck, Flyback, Forward Topology 5.7V 1.2mA TO-220-3.
