Overview
The NCP1616A2DR2G, produced by onsemi, is a high voltage, high efficiency Power Factor Correction (PFC) controller. This device is designed to optimize the efficiency of PFC stages across a wide load range, incorporating innovative features such as Current Controlled Frequency Foldback (CCFF) and integrated high voltage start-up circuitry. The NCP1616A2DR2G is housed in a SOIC-10 NB package and is lead-free, making it suitable for various applications requiring robust and compact PFC solutions.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Start-Up Threshold | VCC(on) | 16 | 17 | 18 | V |
| Minimum Operating Voltage | VCC(off) | 8.5 | 9.0 | 9.5 | V |
| VCC Hysteresis | VCC(HYS) | 7.0 | 8.0 | - | V |
| High Voltage Start-Up Circuit Input Voltage | VHV | -0.3 | - | 700 | V |
| Driver Maximum Voltage | VDRV | -0.3 | - | VDRV | V |
| Driver Maximum Current | IDRV(SRC)/IDRV(SNK) | 500/800 | - | - | mA |
| Maximum Operating Junction Temperature | TJ | -40 | - | 150 | °C |
| Storage Temperature Range | TSTG | -40 | - | 150 | °C |
Key Features
- High Voltage Start-Up Circuit with Integrated Brownout Detection
- Input to Force Controller into Standby Mode
- Skip Mode Near the Line Zero Crossing
- Fast Line / Load Transient Compensation (Dynamic Response Enhancer)
- Valley Switching for Improved Efficiency
- High Drive Capability: -500 mA/+800 mA
- Wide VCC Range: from 9.5 V to 30 V
- Input Voltage Range Detection
- Line Removal Detection Circuitry
- Safety Features: Soft Overvoltage Protection, Overcurrent Protection, Internal Thermal Shutdown, etc.
- Pb and Halogen Free Device
Applications
- PC Power Supplies
- Off Line Appliances Requiring Power Factor Correction
- LED Drivers
- Flat TVs
Q & A
- What is the primary function of the NCP1616A2DR2G?
The NCP1616A2DR2G is a high voltage, high efficiency Power Factor Correction (PFC) controller designed to drive PFC boost stages. - What is the Current Controlled Frequency Foldback (CCFF) method?
The CCFF method operates the circuit in critical conduction mode (CrM) when the inductor current exceeds a programmable value and linearly reduces the frequency at lower currents to maximize efficiency. - What is the purpose of the integrated high voltage start-up circuit?
The integrated high voltage start-up circuit eliminates the need for external start-up components and consumes negligible power during normal operation. - How does the Skip Mode optimize efficiency?
The Skip Mode skips cycles near the line zero crossing when the current is very low to avoid inefficient power transfer and input current distortion. - What safety features are included in the NCP1616A2DR2G?
The device includes Soft Overvoltage Protection, Overcurrent Protection, Internal Thermal Shutdown, Open Pin Protection, and more. - What is the operating voltage range of the VCC pin?
The VCC pin operates within a range of 9.5 V to 30 V. - What is the maximum operating junction temperature?
The maximum operating junction temperature is 150°C. - Is the NCP1616A2DR2G lead-free?
Yes, the NCP1616A2DR2G is a Pb and Halogen Free Device. - What are some typical applications of the NCP1616A2DR2G?
Typical applications include PC Power Supplies, Off Line Appliances requiring PFC, LED Drivers, and Flat TVs. - How does the Dynamic Response Enhancer function?
The Dynamic Response Enhancer speeds up the regulation loop when the output voltage falls below 95.5% of its regulation level to prevent excessive over or undervoltage conditions.
