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HV9120/HV9123
High-Voltage, Current-Mode, PWM Controller
Features
• 10 to 450V input voltage range • <1.3 mA supply current • >1 MHz clock • 49% maximum duty version
Applications
• Off-line high frequency power supplies • Universal input power supplies • High density power supplies • Very high efficiency power supplies • Extra wide load range power supplies
Package Types
1
16
Description
HV9120 and HV9123 are Switch-Mode Power Supply (SMPS) controllers suitable for the control of a variety of converter topologies, including flyback and forward converter.
Using an internal, high-voltage regulator, HV9120 and HV9123 can derive a bias supply for starting-up and powering a converter from a variety of power sources, such as a 12V battery or the rectified AC (230 VAC) line.