LNK564PN IC AC-DC Offline Switcher IC

LNK564PN IC Energy efficient off line switcher IC

LNK564PN is specifically designed to replace all linear and capacitor-fed (cap dropper) non-isolated power supplies at equal system cost while offering much higher performance and energy efficiency. 

LNK564PN IC comprisesa 700 V power MOSFET, oscillator, simple On/Off control scheme, a high-voltage switched current source, frequency jittering, cycle-by-cycle current limit and thermal shutdown circuitry onto a monolithic IC. The start-up and operating power are derived directly from the voltage on the DRAIN pin, eliminating the need for a bias supply and associated circuitry in buck or flyback converters. The fully integrated auto-restart circuit in the LNK564 IC safely limits output power during fault conditions such as short-circuit or open loop,reducing component count and system-level load protection cost. A local supply provided by the IC allows use of a nonsafety graded optocoupler acting as a level shifter to further enhance line and load regulation performance in buck and buck-boost converters, if required.

LNK564PN AD-DC offline switcher IC combines a high-voltage power MOSFET switch with a power supply controller in one device. Unlike conventional PWM (pulse width modulator) controllers a simple ON/OFF control to regulate the output voltage. The controller consists of an oscillator, feedback (sense and logic) circuit, 5.8 V regulator, BYPASS pin undervoltage circuit, over-temperature protection, frequency jittering, current limit circuit, leading edge blanking and a 700 V power MOSFET. The LNK564PN AC-DC Off Line Switcher IC incorporates additional circuitry for auto-restart. 

DNA Solutions deals in retail and bulk quantity. We have various values of AC/DC Switching converter IC's. Check our complete collection of AC DC converter and offline Switcher IC's.

Features of LNK564PN offline switcher IC

• Proprietary IC trimming and transformer construction techniques enable Clampless™ designs with LNK364 for lower system cost, component count and higher efficiency

• Fully integrated auto-restart for short circuit and open loop protection

• Self-biased supply – saves transformer auxiliary winding and associated bias supply components

• Frequency jittering greatly reduces EMI

• Meets HV creepage requirements between DRAIN and all other pins both on the PCB and at the package

• Lowest component count switcher solution

• Accurate hysteretic thermal shutdown protection – automatic recovery improves field reliability

• Universal input range allows worldwide operation

• Simple ON/OFF control, no loop compensation needed

• Eliminates bias winding – simpler, lower cost transformer

• Very low component count – higher reliability and single side printed circuit board

• Auto-restart reduces delivered power by 95% during short circuit and open loop fault conditions

• High bandwidth provides fast turn-on with no overshoot and excellent transient load response

Package Includes

1 x LNK564PN IC AC-DC Offline Switcher IC