EG1397

EG1397 is a high-performance controller for half-bridge topologies, including series resonant, parallel resonant, and LLC resonant controllers. It integrates a 650V half-bridge driver with minimal external components, simplifying PCB layout. EG1397 adopts a unique architecture featuring a up to 500kHz voltage-controlled oscillator with flexible control modes, enabling reliable and stable resonant-mode power supplies. EG1397 offers comprehensive protection features with configurable settings to accommodate a wide range of applications. These include: auto-recovery overcurrent protection, undervoltage protection, soft-start, and optocoupler open/short-circuit protection. Configurable dead time prevents simultaneous conduction of the high-side and low-side MOSFETs, making it suitable for various power levels.

Applications

• Monitor power supplies
• AC-DC adapters
• Battery chargers
• Computer and communication power supplies
• Industrial and medical power equipment

Key features

• Integrated 650V half-bridge driver
• High-precision oscillator, operating frequency up to 500kHz
• Configurable minimum switching frequency
• Configurable dead time from 100nS to 2uS
• Configurable soft start
• VCC supply voltage up to 20V
• Low startup current 300uA
• Built-in temperature protection
• Overcurrent auto-recovery
• Half-bridge driver output current capability I0+/- 0.8/1.3A
• Lead-free, halogen-free, RoHS-compliant package: SOP16L