Overview
The NCP1399AADR2G is a high-performance current mode controller designed for half bridge resonant converters, manufactured by onsemi. This controller integrates 600 V gate drivers, which simplifies the layout and reduces the external component count. It features a built-in Brown-Out input function, making it easier to implement in various applications. The NCP1399AADR2G also includes a dedicated output to drive the PFC controller, enhancing light load efficiency when a PFC front stage is required. The controller provides a comprehensive suite of protection features, including overload protection, over-current protection, brown-out detection, open optocoupler detection, automatic dead-time adjustment, overvoltage (OVP), and overtemperature (OTP) protections.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Topology | LLC | - |
| Control Mode | Current Mode | - |
| Switching Frequency | Up to 500 kHz | kHz |
| Stand-by Mode | Yes | - |
| UVLO (Under Voltage Lock Out) | 8.9 V | V |
| Short Circuit Protection | Yes | - |
| Latch | Yes | - |
| Soft Start | Yes | - |
| VCC Max | 20 V | V |
| Drive Capacity | 500 / 1000 mA | mA |
| Package Type | SOIC-16 NB | - |
| Operating Temperature | -40°C to +125°C | °C |
Key Features
- High-frequency operation from 20 kHz up to 750 kHz
- Current mode control scheme with automatic dead-time adjustment and maximum dead-time clamp
- Integrated 600 V gate drivers for simplified layout and reduced external component count
- Built-in Brown-Out input function for easy implementation
- Dedicated output to drive the PFC controller, enhancing light load efficiency
- Ultra-low power consumption mode (off-mode) with active ON and active OFF control techniques
- Comprehensive protection features including overload protection, over-current protection, brown-out detection, open optocoupler detection, OVP, and OTP protections
Applications
- High power AC/DC adapters for notebooks
- Offline battery chargers
- Industrial and medical power sources
- Computing power supplies
- Notebook adapters
- LCD-TV / LED-TV power supplies
Q & A
- What is the NCP1399AADR2G used for?
The NCP1399AADR2G is used as a high-performance current mode controller for half bridge resonant converters.
- What are the key protection features of the NCP1399AADR2G?
The key protection features include overload protection, over-current protection, brown-out detection, open optocoupler detection, automatic dead-time adjustment, overvoltage (OVP), and overtemperature (OTP) protections.
- What is the switching frequency range of the NCP1399AADR2G?
The switching frequency range is from 20 kHz up to 750 kHz.
- What is the purpose of the built-in Brown-Out input function?
The built-in Brown-Out input function eases the implementation of the controller in all applications.
- How does the NCP1399AADR2G enhance light load efficiency?
The NCP1399AADR2G enhances light load efficiency through a dedicated output to drive the PFC controller and the use of quiet skip mode technique.
- What are the different off-mode control techniques used by the NCP1399AADR2G?
The controller uses active ON and active OFF off-mode control techniques, which differ in how the off-mode operation is started on the primary side controller.
- What is the maximum operating voltage for the VCC pin?
The maximum operating voltage for the VCC pin is 20 V.
- What is the package type of the NCP1399AADR2G?
The package type is SOIC-16 NB.
- What are some typical applications of the NCP1399AADR2G?
Typical applications include high power AC/DC adapters for notebooks, offline battery chargers, industrial and medical power sources, computing power supplies, and LCD-TV / LED-TV power supplies.
- How does the NCP1399AADR2G reduce standby power consumption?
The controller features a HV startup current source that allows for fast startup time and extremely low standby power consumption.
