Overview
The NCP1399AMDR2G is a high-performance current mode controller designed for half-bridge resonant converters, manufactured by ON Semiconductor. This controller is optimized for high-frequency operation, ranging from 20 kHz to 750 kHz, and is particularly suited for applications requiring efficient and reliable power conversion.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| HV Startup Current Source HV Pin Voltage | -0.3 to 600 | V |
| VCC Pin Voltage | -0.3 to 20 | V |
| SKIP Pin Voltage | -0.3 to 5.5 | V |
| LLC FB Pin Voltage | -0.3 to 5.5 | V |
| LLC CS Pin Voltage | -5 to 5 | V |
| Operating Frequency | 20 kHz to 750 kHz | Hz |
| Operating Current | 5.4 mA | mA |
| VCC Lockout Voltage | 8.9 V | V |
| Package Type | SOIC-16 |
Key Features
The NCP1399AMDR2G features several key functionalities that enhance its performance and reliability:
- High-Frequency Operation: Supports frequencies from 20 kHz to 750 kHz.
- HV Startup Current Source: Enables fast startup times and extremely low standby power consumption.
- Over-Voltage and Over-Temperature Protection: Includes dedicated OVP and OTP protections with adjustable threshold levels.
- Off-Mode Operation: Implements ultra-low power consumption modes, including Active ON and Active OFF off-mode control.
- Current Mode Control Scheme: Ensures best transient response and inherent cycle-by-cycle over-current protection.
- Secondary Short Circuit Protection: Quickly shuts down the controller to limit stress on power stage components.
- Brown-Out Protection: Monitors bulk voltage to prevent operation under low input voltage conditions.
- Quiet Skip Mode: Improves light load efficiency by adjusting the skip mode threshold.
Applications
The NCP1399AMDR2G is suitable for a variety of applications, including:
- Adapter Applications: Such as power supplies for notebooks, TVs, and other consumer electronics.
- Resonant Converters: Half-bridge resonant converters requiring high efficiency and reliability.
- PFC Front Stage Controllers: Can be used in conjunction with PFC controllers to enhance overall system efficiency.
- High-Frequency Power Conversion: Applications demanding high-frequency operation and low standby power consumption.
Q & A
- What is the operating frequency range of the NCP1399AMDR2G?
The operating frequency range is from 20 kHz to 750 kHz.
- What is the maximum voltage rating for the VCC pin?
The maximum voltage rating for the VCC pin is 20 V.
- What protection features does the NCP1399AMDR2G include?
The controller includes over-voltage (OVP), over-temperature (OTP), brown-out, and secondary short circuit protections.
- How does the off-mode operation work in the NCP1399AMDR2G?
The controller implements ultra-low power consumption modes, including Active ON and Active OFF off-mode control, to reduce no-load input power consumption.
- What is the purpose of the HV startup current source?
The HV startup current source allows for fast startup times and extremely low standby power consumption.
- How does the current mode control scheme work?
The scheme uses an ON-time comparator to define upper switch on-time, ensuring best transient response and inherent cycle-by-cycle over-current protection.
- What is the significance of the quiet skip mode?
The quiet skip mode improves light load efficiency by adjusting the skip mode threshold.
- How does the secondary short circuit protection work?
The controller quickly shuts down to limit stress on power stage components in case of a secondary short circuit.
- What is the package type of the NCP1399AMDR2G?
The package type is SOIC-16.
- What is the typical operating current of the NCP1399AMDR2G?
The typical operating current is 5.4 mA.
