製品の説明
The NCP1395A/B offers everything needed to build a reliable and rugged resonant mode power supply. Its unique architecture includes a 1 MHz Voltage Controller Oscillator whose control mode brings flexibility when an ORing function is a necessity, e.g. in multiple feedback paths implementations. Protections featuring various reaction times, e.g. immediate shutdown or timer-based event, brown-out, broken opto-coupler detection etc., contribute to a safer converter design, without engendering additional circuitry complexity. An adjustable deadtime also helps lowering the shoot-through current contribution as the switching frequency increases.
Finally, an on-board operational transconductance amplifier allows for various configurations, including constant output current working mode or traditional voltage regulation.
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特長 |
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- High Frequency Operation from 50 kHz up to 1.0 MHz
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- Selectable Minimum Switching Frequency with ±3% Accuracy
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- Timer-Based Input with Auto-Recovery Operation for Delayed Event Reaction
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- Adjustable Deadtime from 150 ns to 1.0 µs
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- Startup Sequence via an Adjustable Soft--Start
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- Brown-Out Protection for a Simpler PFC Association
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- Latched Input for Severe Fault Conditions, e.g. Overtemperature or OVP
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- Enable Input for Immediate Event reaction or Simple ON/OFF Control
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- Operational Transconductance Amplifier (OTA) for Multiple Feedback Loops
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- Low Startup Current of 300 µA max
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- Common Collector Optocoupler Connection
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アプリケーション |
- LCD/Plasma TV Converters
- High Power Ac--Dc Adapters for Notebooks
- Industrial and Medical Power Sources
- Offline Battery Chargers
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