Overview
The NCP1606BDR2G is a cost-effective power factor controller designed by ON Semiconductor. It is specifically tailored for use as a pre-converter in electronic ballasts, AC-DC adapters, and other medium power offline converters, typically up to 300 W. The device employs a Critical Conduction Mode (CRM) scheme to achieve unity power factor across a wide range of input voltages and power levels. Housed in a SOIC-8 package, the NCP1606BDR2G minimizes the number of external components required and integrates comprehensive safety protection features, making it an excellent driver for rugged PFC stages.
Key Specifications
| Parameter | Unit | Min | Typ | Max |
|---|---|---|---|---|
| Operating Junction Temperature Range | °C | -40 | - | 125 |
| Maximum Junction Temperature | °C | - | - | 150 |
| Storage Temperature Range | °C | -65 | - | 150 |
| Lead Temperature (Soldering, 10 s) | °C | - | - | 300 |
| Power Dissipation @ TA = 70°C | mW | - | - | 450 |
| Thermal Resistance Junction-to-Air | °C/W | - | - | 178 |
| Startup Current Consumption | μA | - | ≤ 40 | - |
| Typical Operating Current | mA | - | 2.1 | - |
| Totem Pole Gate Driver Current | mA | -500 | - | +800 |
| High Precision Voltage Reference | V | 2.5 - 1.6% | 2.5 | 2.5 + 1.6% |
Key Features
- Unity Power Factor: Achieves high power factor ratios without the need for input voltage sensing.
- No Need for Input Voltage Sensing: Simplifies the design by eliminating the need for a line sensing network.
- Latching PWM for Cycle by Cycle On Time Control (Voltage Mode): Ensures precise control over the on time of the driver.
- High Precision Voltage Reference: The error amplifier reference voltage is guaranteed at 2.5 V ±1.6% over temperature ranges.
- Very Low Startup Current Consumption: Reduces circuit consumption to less than 40 μA during the startup phase.
- Powerful Output Driver: A -500 mA / +800 mA totem pole gate driver for rapid turn on and turn off times.
- Programmable Overvoltage Protection (OVP): Adjustable OVP feature protects the PFC stage against excessive output overshoots.
- Protection against Open Loop (Undervoltage Protection): Disables the PFC stage when the output voltage is excessively low.
- Accurate and Programmable On Time Limitation: Uses an accurate current source and an external capacitor to generate the on time.
Applications
- Electronic Light Ballasts: Ideal for lighting applications requiring power factor correction.
- AC Adapters, TVs, Monitors: Suitable for various consumer electronics needing efficient power conversion.
- All Offline Appliances Requiring Power Factor Correction: Applicable to any device that needs to correct power factor for efficient and compliant operation.
Q & A
- What is the primary function of the NCP1606BDR2G?
The NCP1606BDR2G is a power factor controller designed to achieve unity power factor in electronic ballasts, AC-DC adapters, and other medium power offline converters. - What is the operating junction temperature range of the NCP1606BDR2G?
The operating junction temperature range is -40°C to 125°C. - What is the maximum junction temperature of the NCP1606BDR2G?
The maximum junction temperature is 150°C. - What is the typical operating current of the NCP1606BDR2G?
The typical operating current is 2.1 mA. - What is the gate driver current capability of the NCP1606BDR2G?
The gate driver can handle -500 mA to +800 mA. - How does the NCP1606BDR2G achieve unity power factor?
It achieves unity power factor through a Critical Conduction Mode (CRM) scheme without the need for input voltage sensing. - What safety features does the NCP1606BDR2G include?
The device includes programmable overvoltage protection, undervoltage protection, and overcurrent limitation. - What is the purpose of the high precision voltage reference in the NCP1606BDR2G?
The high precision voltage reference ensures accurate output voltages with a guaranteed reference voltage of 2.5 V ±1.6% over temperature ranges. - How does the NCP1606BDR2G manage startup current consumption?
The device reduces circuit consumption to less than 40 μA during the startup phase. - What are some typical applications of the NCP1606BDR2G?
Typical applications include electronic light ballasts, AC adapters, TVs, monitors, and all offline appliances requiring power factor correction.
