NCP1606B is a device or circuitry used in power supply systems to improve the power factor. The power factor is a measure of how effectively electrical power is being used. A low power factor can result in inefficient power consumption and can cause issues such as increased energy costs, decreased system capacity, and harmonic distortion.
Part number : NCP1606
Functions : Cost Effective Power Factor Controller
Package : SOP 8 Pin Type
Manufacturer : ON Semiconductor
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Description
The NCP1606B is an active power factor controller specifically designed for use as a pre−converter in electronic ballasts, ac−dc adapters and other medium power off line converters (typically up to 300 W). It embeds a Critical Conduction Mode (CRM) scheme that substantially exhibits unity power factor across a wide range of input voltages and power levels. Housed in a DIP8 or SOIC−8 package, the NCP1606 minimizes the number of external components. Its integration of comprehensive safety protection features makes it an excellent driver for rugged PFC stages.
The primary function of a power factor controller is to optimize the power factor by adjusting the input current to closely follow the shape of the input voltage waveform. This is typically achieved by employing active or passive power factor correction techniques.
Active power factor correction (PFC) involves using electronic components such as power factor correction controllers, integrated circuits, and switching devices to actively control the input current and align it with the input voltage.
Features
• “Unity” Power Factor
• No Need for Input Voltage Sensing
• Latching PWM
• High Precision Voltage Reference (±1.6% over temperature ranges)
• Very Low Startup Current Consumption (≤40 A)
• Low Typical Operating Current (2.1 mA)
• −500 mA / +800 mA Totem Pole Gate Driver
• Undervoltage Lockout with Hysteresis
• Pin to Pin Compatible with Industry Standards
Application Circuits
Applications
• Electronic Light Ballast
• AC Adapters, TVs, Monitors
• All Off Line Appliances Requiring Power Factor Correction
NCP1606B Datasheet PDF
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