DESCRIPTION
HY1655E is an intelligent digital multi-mode Flyback controller with high voltage start up on chip. The newly developed architecture is inherent features to meet regulatory requirements of the industry. HY1655E integrates rich protections and features such as line compensation, slope compensation, transformer short protection, output over-voltage protection, VCC OVP, over load protection, overtemperature protection, brown in and brown-out. HY1655E is available with the SOP7L package.
FEATURES
• On Chip High Voltage Start Up
• Intelligent Digital Multi-Mode Control
• Peak Current Mode Control at Burst-Mode /PFM/DCM/CCM
• QR at High Line (HL), QR and CCM at Low Line (LL) to Balance the Switching Loss and the Conduction Loss
• Switching Frequency Dithering to Improve EMI
• Adaptive MOSFET Gate Drive to Balance Switching Loss and EMI • MOSFET Gate Voltage is Clamped at 12V
• Protection Features
Output OVP
VCC OVP
Transformer Saturation Protection
Over Load Protection
Brown Out/In Protection
On chip OTP
Current Sensing Open Protection
• Line Feed-forward Compensation
• Power Consumption < 20m
