MP6004 Primary-Side Regulated Flyback/Buck 80V DCDC Converter QFN-14

MP6004 Primary-Side Regulated Flyback/Buck 80V DCDC Converter QFN-14

The MP6004 is a monolithic flyback dc-dc converter with a 180 V power switch that targets isolated or non-isolated 13 W PoE applications.

Key Specifications

Features

• Supports Primary-Side Regulated Flyback without Opto-Coupler Feedback
• Supports Buck from Up to 80 V Input
• Integrated 180 V Switching Power MOSFET
• Internal 80 V Start-Up Circuit
• Up to 3 A Programmable Current Limit
• Discontinuous Conduction Mode
• OLP, OVP, Open-Circuit, and Thermal Protection
• Flexible Self-Power or External VCC Power
• Minimal External Component Count
• Available in a QFN-14 3mm x 3mm Package

Typical Application Circuit

Applications

• Security Cameras
• VoIP Phones
• WLAN Access Points

Design Notes

• Size the inductor for the ripple current at the actual switching frequency, typically 30% of the DC load — not for the DC rating alone.
• The hot loop from input capacitor through the switch to ground sets conducted EMI. Keep that copper area as small as the layout allows.
• Output ripple is set by the capacitor ESR and its DC-bias derating; a 10 µF ceramic often behaves like 4 µF at the rated output voltage.
• Route the feedback divider from the output capacitor terminals, away from the switch node.

Common Questions