NCP1606
Power factor correction controllers in SOIC and DIP packages
Manufacturer： ['rochester', 'onsemi', 'lrc']
series introduction
# NCP1606 Product Series Introduction
## 1. Overview
The NCP1606 product series is a cutting - edge line of integrated circuits (ICs) designed by onsemi, a leading semiconductor company. These ICs are specifically engineered for power factor correction (PFC) applications, which play a crucial role in modern electrical systems. Power factor correction is essential for improving the efficiency of electrical power usage, reducing energy waste, and meeting strict global energy efficiency standards.
## 2. Key Features
### 2.1 High - Performance PFC
- **Advanced Control Algorithm**: The NCP1606 utilizes a state - of - the - art control algorithm to achieve near - unity power factor. This means that it can effectively convert the input AC power into DC power with minimal reactive power, resulting in a highly efficient power conversion process. For example, in a typical industrial power supply application, it can improve the power factor from a low value (e.g., 0.6) to over 0.99, significantly reducing the overall power consumption.
- **Wide Input Voltage Range**: It can operate over a wide range of input voltages, typically from 85VAC to 265VAC. This makes it suitable for use in various regions around the world, where the mains voltage can vary. Whether it is a low - voltage input in some residential areas or a high - voltage input in industrial settings, the NCP1606 can adapt and provide stable PFC performance.
### 2.2 Flexible Operation Modes
- **Continuous Conduction Mode (CCM) and Discontinuous Conduction Mode (DCM)**: The NCP1606 supports both CCM and DCM operation modes. In CCM, the inductor current never reaches zero during the switching cycle, which is suitable for high - power applications where high efficiency and low harmonic distortion are required. On the other hand, DCM is more suitable for low - power applications as it simplifies the control circuit and reduces the cost. The ability to switch between these two modes allows the NCP1606 to be used in a wide variety of power supply designs.
- **Frequency Foldback**: This feature is particularly useful in light - load conditions. When the load on the power supply decreases, the switching frequency of the NCP1606 is automatically reduced. This helps to improve the efficiency at light loads by reducing the switching losses, which is an important consideration in applications where the load can vary significantly, such as in laptop chargers or LED drivers.
### 2.3 Comprehensive Protection Features
- **Over - Voltage Protection (OVP)**: The NCP1606 is equipped with OVP to protect the power supply and the connected load from excessive voltage. If the output voltage exceeds a predefined threshold, the IC will take appropriate action, such as reducing the power output or shutting down the circuit to prevent damage.
- **Over - Current Protection (OCP)**: OCP ensures that the current flowing through the power supply does not exceed a safe level. In case of a short - circuit or an over - load condition, the NCP1606 will limit the current to protect the components from overheating and potential failure.
- **Under - Voltage Lockout (UVLO)**: UVLO prevents the power supply from operating when the input voltage is too low. This helps to ensure stable and reliable operation of the power supply and protects the IC from damage due to insufficient power.
## 3. Applications
### 3.1 Consumer Electronics
- **LCD/LED TVs**: In modern flat - panel TVs, the NCP1606 can be used in the power supply unit to improve the power factor and reduce the energy consumption. This not only helps to meet the energy efficiency regulations but also reduces the operating
Images for reference
8-SOIC
8-DIP
NCP1606BOOSTGEVB