NCP1397A/B

The NCP1397 is a high performance controller that can be utilized in half bridge resonant topologies such as series resonant, parallel resonant and LLC resonant converters. It integrates 600 V gate drivers, simplifying layout and reducing external component count. With its unique architecture, including a 500 kHz Voltage Controlled Oscillator whose control mode permits flexibility when an ORing function is required, the NCP1397 delivers everything needed to build a reliable and rugged resonant mode power supply. The NCP1397 provides a suite of protection features with configurable settings to optimize any application. These include: auto−recovery or fault latch−off, brown−out, open optocoupler, soft−start and short−circuit protection. Deadtime is also adjustable to overcome shoot through current.

Features
 • High−Frequency Operation from 50 kHz up to 500 kHz
 • 600 V High−Voltage Floating Driver
 • Adjustable Minimum Switching Frequency with ±3% Accuracy
 • Adjustable Deadtime from 100 ns to 2 s
. • Startup Sequence Via an Externally 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
 • Latched Overcurrent Protection
 • Disable Input for Immediate Event Reaction or Simple ON/OFF Control
 • VCC Operation up to 20 V
 • Low Startup Current of 300 A
 • 1 A/0.5 A Peak Current Sink/Source Drive Capability
 • Common Collector Optocoupler Connection for Easier ORing
 • Optional Common Emitter Optocoupler Connection
 • Internal Temperature Shutdown
 • NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change          Requirements; AEC−Q100 Qualified and PPAP Capable
 • These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant Typical                        Applications
 • Flat Panel Display Power Converters
 • High Power ac−dc Adapters for Notebooks • Computing Power Supplies