onsemi | NCP1396BDR2G

The NCP1396 is a High Performance Resonant Mode Controller featuring High-Voltage Drivers.

The NCP1396 A/B offers everything needed to build a reliable and rugged resonant mode power supply. Its unique architecture includes a 500 kHz Voltage Controlled Oscillator whose control mode brings flexibility when an ORing function is a necessity, e.g. in multiple feedback paths implementations. Thanks to its proprietary high-voltage technology, the controller welcomes a bootstrapped MOSFET driver for half-bridge applications accepting bulk voltages up to 600 V. 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.

Key Features:

• High-frequency Operation from 50 kHz up to 500 kHz
• 600 V High-Voltage Floating Driver
• Selectable Minimum Switching Frequency with ±3% Accuracy
• Adjustable Deadtime from 100 ns to 2 µs.
• Startup Sequence via an Adjustable Soft-start
• Brown-out Protection for a Simpler PFC Association
• Latched Input for Severe Fault Conditions, e.g. Over Temperature or OVP
• Timer-based Input with Auto-recovery Operation for Delayed Event Reaction
• Enable Input for Immediate Event Reaction or Simple ON/OFF Control
• VCC Operation up to 20 V
• Low Startup Current of 300 µA
• 1 A / 0.5 A Peak Current Sink / Source Drive Capability
• Common Collector Optocoupler Connection for Easier ORing
• Internal Temperature Shutdown
• B Version features 10 V VCC Startup Threshold
• These are Pb-Free Devices

Benefits:

• Improved fault handling and robustness
• Prevents shoot-through currents and allows for optimization based on MOSFET characteristics
• Prevents damage from current spikes and startup and reduces EMI
• Protects against input voltage drops and simplifies PFC association

Applications:

• Flat Panel Display Power Converters
• High Power AC/DC Adapters for Notebooks
• Industrial and Medical Power Sources
• Offline Battery Chargers

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