Power Integrations LinkZero-LP No-Load Consumption Off-Line Switcher
Power Integrations LinkZero-LP Zero No-Load Consumption Integrated Off-Line Switcher is an upgrade to the LinkSwitch-LP, the industry's lowest component count charger/adapter and standby power switcher IC. It incorporates new technology, which enables the device to automatically enter into and wake up from no-load mode while taking less than 5mW from the AC power. Power Integrations LinkZero-LP Zero No-Load Consumption Integrated Off-Line Switcher comprises a 700V power MOSFET switch with a power supply controller on the same die. Unlike conventional PWM (pulse width modulation) controllers, it uses a simple ON/OFF control to regulate the output voltage.
The controller consists of the following circuits: an oscillator, feedback (sense) 5.85V regulator, BYPASS pin under/overvoltage protection, over-temperature protection, frequency jittering, current limit, leading-edge blanking BYPASS pin clamp in power down, and bypass mode. The controller includes a proprietary power-down mode that automatically reduces standby consumption to levels that are immeasurable on most power meters.
Features
- Automatically enters zero input power mode when a load is disconnected
- Detects load reconnection and automatically restarts regulation
- 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
- 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
- No-load consumption as low as 4mW at 230VAC input
- Easily meets all global energy efficiency regulations with no added components
- ON/OFF control provides constant efficiency to very light loads
Applications
- Chargers for:
- Cell/cordless phones
- PDAs
- Power tools
- MP3/portable audio devices
- Shavers
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LinkZero-LP Pin Configuration
SMD-8C Pin Configuration
Additional Resources
Publicēts: 2011-06-28
| Atjaunināts: 2022-03-11