Overview
The NCP1607BDR2G is a cost-effective power factor controller (PFC) designed by onsemi. It is specifically intended for use as a pre-converter in AC-DC adapters, electronic ballasts, and other medium power offline converters, typically up to 250 W. The controller operates in Critical Conduction Mode (CRM) to ensure unity power factor across a wide range of input voltages and power levels. It integrates comprehensive safety protection features, making it an excellent choice for robust PFC stage designs. The device is available in a SOIC-8 package and is Pb-free and halogen-free, enhancing its environmental compatibility.
Key Specifications
| Parameter | Typical Value | Min Value | Max Value |
|---|---|---|---|
| Maximum Junction Temperature (TJ) | - | - | 150 °C |
| Storage Temperature Range (TSTG) | - | -65 °C | 150 °C |
| Lead Temperature (Soldering, 10 s) | - | - | 300 °C |
| Startup Current Consumption | - | - | ≤ 40 μA |
| Typical Operating Current | 2.1 mA | - | - |
| Gate Driver Current Capability | - | 500 mA (Source), 800 mA (Sink) | - |
| Overcurrent Voltage Threshold (VCS(limit)) | 0.5 V | 0.45 V | 0.55 V |
| Zero Current Detection Threshold (VZCDH) | 2.1 V | 1.9 V | 2.3 V |
| Zero Current Detection Threshold (VZCDL) | 1.6 V | 1.45 V | 1.75 V |
Key Features
- Unity Power Factor: Ensures high power factor ratios without the need for input voltage sensing.
- Constant On Time (Voltage Mode): Operates in Critical Conduction Mode (CRM) for optimal performance.
- High Precision Voltage Reference: The error amplifier reference voltage is guaranteed at 2.5 V ±1.6% over process, temperature, and voltage supply levels.
- Very Low Startup Current Consumption: Reduced to a minimum (< 40 μA) during the startup phase.
- Powerful Output Driver: Source 500 mA / Sink 800 mA Totem Pole Gate Driver.
- Safety Features: Includes programmable overvoltage protection, open feedback loop protection, and accurate overcurrent detection.
- Environmental Compliance: Pb-free and halogen-free molding compound.
Applications
- AC-DC Adapters: Suitable for use in power supplies for various electronic devices.
- Electronic Light Ballasts: Used in lighting systems requiring power factor correction.
- Offline Appliances: Ideal for appliances that require power factor correction to meet regulatory standards.
- TVs and Monitors: Used in power supplies for consumer electronics.
Q & A
- What is the primary function of the NCP1607BDR2G?
The NCP1607BDR2G is a power factor controller designed to ensure unity power factor in AC-DC adapters, electronic ballasts, and other medium power offline converters.
- What is the operating mode of the NCP1607BDR2G?
The controller operates in Critical Conduction Mode (CRM).
- What is the maximum power handling capability of the NCP1607BDR2G?
Typically up to 250 W.
- What is the package type of the NCP1607BDR2G?
SOIC-8 package.
- What are the key safety features of the NCP1607BDR2G?
Programmable overvoltage protection, open feedback loop protection, and accurate overcurrent detection.
- What is the typical operating current of the NCP1607BDR2G?
2.1 mA.
- What is the startup current consumption of the NCP1607BDR2G?
Less than or equal to 40 μA.
- Is the NCP1607BDR2G environmentally friendly?
- What is the purpose of the error amplifier in the NCP1607BDR2G?
The error amplifier regulates the output voltage based on a high precision reference voltage.
- How does the NCP1607BDR2G ensure constant on time?
It uses an external capacitor and a current source to generate the on time, which is controlled by the Control pin voltage.
