Accelerate Flyback Designs with New TinySwitch-5 Guide and Design Example

The latest TinySwitch-5 family of switcher ICs sets a new standard for basic flyback power supply design using diode rectification and optocoupler feedback. This increases maximum output power to 175 W offline and 190 W with power factor correction, while achieving efficiencies up to 92% at full load. To help get your design started, Power Integrations has released a comprehensive design guide (AN-112) and several new design examples.

■ DER-1027 – 120W Industrial Isolated Flyback
・No-load power consumption < 80mW
・Maximum load efficiency > 91%

■ DER-1017 – 12W Appliance Isolated Flyback
・No-load power consumption < 50mW
・Maximum load efficiency > 88%

■ RDR-1016 – 26.5W Dual Output Isolated Flyback
・No-load power consumption < 50mW
・Maximum load efficiency > 87%
・ Evaluation Kit

■ DER-1040 - 36W Appliance Isolated Flyback
・No-load power consumption < 60mW
・Maximum load efficiency > 88%

Equipped with an advanced control engine, TinySwitch-5 devices optimize efficiency even at light loads, achieving a peak efficiency of 87% at 1% load. This enables the power supply to deliver 220mW of output power while remaining compliant with the EU ErP input standby power limit of 300mW. TinySwitch-5 ICs are available in both through-hole packages for maximum output power and surface-mount package options for heatsink-less designs that utilize board cooling. The latter includes a thermally enhanced eSOP™-12 package capable of delivering up to 75W without a heatsink.

Product documentation related

The datasheet and reference design for this product can be downloaded immediately from the manufacturer's website below.

• TinySwitch-5 Family Product Page
• TinySwitch-5 Datasheet
• White Paper: Modeling Frequency Response for a Novel Pulse-Width Modulated Flyback Control Scheme
• White Paper: Advanced PWM control circuit technology optimized for high conversion efficiency across the entire input voltage/load range

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