Power推出PI的LinkSwitch-LP的升级版LinkZero-LP

LinkZero-LP, an upgrade to PI’s popular LinkSwitch-LP, incorporates new technology which enables the device to automatically enter into and wake up from no-load mode while dissipating less than 5 mW – substantially less than the IEC definition of zero no-load power consumption. The tightly specified FEEDBACK pin voltage reference enables universal input primary side regulated power supplies with accurate constant voltage from 5% to full load. Start-up and operating power are derived directly from the DRAIN pin which eliminates start-up circuitry. The internal oscillator frequency is jittered to significantly reduce both quasi-peak and average EMI, minimizing filter cost.

Product Highlights

Lowest System Cost with Zero No-Load

Automatically enters zero input power mode when load is disconnected Simple upgrade to existing LinkSwitch-LP designs Very tight IC parameter tolerances improve system manufacturing yield Suitable for low-cost clampless designs Frequency jittering greatly reduces EMI filter cost Extended package creepage improves system field reliability

Advanced Protection/Safety Features

Accurate hysteretic thermal shutdown protection – automatic recovery reduces field returns Universal input range allows worldwide operation Auto-restart reduces delivered power by >85% during short-circuit and open loop fault conditions Simple ON/OFF control, no loop compensation needed High bandwidth provides excellent transient load response with no overshoot

EcoSmart™ – Energy Efficient

No-load consumption as low as 4 mW at 230 VAC input* Easily meets all global energy efficiency regulations with no added components ON/OFF control provides constant efficiency to very light loads