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 NCP1397A/B is a high‑performance resonant‑mode controller that integrates 600 V high‑voltage floating drivers, enabling series, parallel, and LLC resonant converter topologies. It offers a wide frequency range from 50 kHz to 500 kHz and adjustable dead‑time, simplifying layout and reducing external component count.
The device includes extensive protection features such as auto‑recovery, brown‑out, open‑optocoupler detection, soft‑start, and short‑circuit protection. Detailed pin‑out information, ordering options, and mechanical dimensions are provided for design and manufacturing use.
| Maximum Switching Frequency | 500 kHz |
|---|---|
| High‑Voltage Driver Rating | 600 V |
| Adjustable Deadtime Range | 100 ns to 2 µs |
| VCC Operating Voltage | Up to 20 V |
| Startup Current | 300 µA |
| Peak Current Sink/Source | 1 A / 0.5 A |
| Thermal Resistance (PDIP) | 100 °C/W |
The controller can operate up to 500 kHz.
The startup current is 300 µA.