TOP232P

TOP232P - TOPSwitch-FX High-Performance Offline Switcher IC

The TOP232P from Power Integrations delivers exceptional performance and reliability for cost-effective flyback power supply designs. This advanced offline switcher integrates a robust 700V power MOSFET, enabling compact, efficient AC-DC conversion up to 15W with minimal external components.

Key Features & Technical Advantages

• Integrated 700V Power MOSFET - Eliminates external switching transistor, reducing BOM cost and board space by up to 40%
• 15W Maximum Output Power - Optimized for low to medium power applications including adapters, chargers, and auxiliary supplies
• Proven Flyback Topology - Industry-standard isolated design ensures reliable galvanic isolation and multiple output capability
• Wide Switching Frequency Range (66kHz to 132kHz) - Automatic frequency modulation reduces EMI and enables flexible transformer design
• Comprehensive Integrated Protection - Built-in current limiting, thermal shutdown, and over-voltage protection safeguard against fault conditions
• 78% Maximum Duty Cycle - Maximizes transformer utilization and enables efficient power transfer across wide input voltage ranges
• Extended Operating Temperature Range - Rated for -40°C to 150°C junction temperature, suitable for industrial and automotive applications
• Standard 8-DIP Through-Hole Package - Simplifies prototyping, manufacturing, and field service with proven mechanical reliability
• Frequency Jittering - Reduces conducted and radiated EMI, simplifying compliance with international standards
• Auto-Restart Mode - Automatic recovery from fault conditions ensures robust operation in demanding environments

Target Applications & Use Cases

• AC-DC Power Adapters & Wall Chargers - Consumer electronics, mobile devices, IoT equipment
• Auxiliary & Standby Power Supplies - Home appliances, industrial controls, HVAC systems
• LED Driver Circuits - Architectural lighting, signage, display backlighting
• Industrial Control Systems - PLCs, sensors, actuators, motor drives
• Smart Home Devices - Thermostats, security systems, connected appliances
• Medical Equipment - Diagnostic instruments, patient monitoring, portable devices

Design Benefits & Value Proposition

The TOPSwitch-FX family represents Power Integrations' commitment to simplifying power supply design while maximizing reliability and efficiency. The TOP232P requires minimal external components—typically just a transformer, rectifier, and a few passive components—dramatically reducing design complexity and time-to-market.

With built-in soft-start, cycle-by-cycle current limiting, and thermal shutdown, the TOP232P provides robust protection against overload, short-circuit, and over-temperature conditions. The integrated frequency jittering spreads the switching spectrum, reducing peak EMI emissions and easing compliance with EN55022, FCC Part 15, and CISPR 22 standards.

Engineers benefit from extensive application support including reference designs, design tools, and comprehensive documentation. The through-hole package enables rapid prototyping and simplified manufacturing, while the wide operating temperature range ensures reliable operation across diverse environmental conditions.

Quality Assurance & Support

Authorized Distributor Commitment: We supply 100% genuine Power Integrations components with full factory traceability, manufacturer warranty support, and compliance documentation. Every TOP232P ships with certificate of conformance and is backed by our quality guarantee.

Technical Resources Available: Application notes, reference designs, SPICE models, design calculators, and expert engineering support to accelerate your development cycle.

Trust our expertise in power semiconductor distribution to deliver the components and support you need for mission-critical applications.

• TOP232P.pdf