INN2023K

The INN2023K is an offline CV/CC fly-back Switcher IC with integrated 650V MOSFET, synchronous rectification and feedback. The IC dramatically simplifies the development and manufacturing of low-voltage, high current power supplies, particularly those in compact enclosures or with high efficiency requirements. The InnoSwitch-CH architecture is revolutionary in that the devices incorporate both primary and secondary controllers with sense elements and a safety-rated feed-back mechanism into a single IC. Close component proximity and innovative use of the integrated communication link permit accurate control of a secondary-side synchronous rectification MOSFET and optimization of primary-side switching to maintain high efficiency across the entire load range. Additionally, the minimal DC bias requirements of the link enable the system to achieve less than 10mW no-load in challenging applications such as smart-mobile device chargers.

• Easily meets all global energy efficiency regulations
• Low heat dissipation
• Primary sensed output OVP
• Secondary sensed output overshoot clamp
• Secondary sensed output OCP to zero output voltage
• Hysteretic thermal shutdown
• Reinforced insulation
• Connection to external SR FET gate terminal
• Ground connection for the secondary IC
• Primary bypass pin regulator
• Primary bypass pin undervoltage threshold
• Primary bypass pin output overvoltage latching function
• Over temperature protection
• Current limit operation
• Auto-restart
• Safe-operating-area protection
• Primary-secondary handshake protocol
• Secondary controller
• Feedback pin auto-restart threshold
• Cable drop compensation
• Output overvoltage protection
• Output constant current regulation
• SR Disable protection
• ON/OFF Operation with current limit state machine