Overview
The NCP13992AEDR2G, produced by onsemi, is a high-performance current mode controller designed for half-bridge resonant converters. This controller integrates 600 V gate drivers, simplifying the layout and reducing the external component count. It features a suite of protection mechanisms, including overload protection, over-current protection, brown-out detection, open optocoupler detection, automatic dead-time adjustment, over-voltage (OVP), and over-temperature (OTP) protections. The NCP13992AEDR2G also includes advanced features such as quiet skip mode for minimizing transformer acoustic noise and light load operation mode for improved efficiency.
Key Specifications
| Parameter | Unit | Typical | Minimum | Maximum |
|---|---|---|---|---|
| Operating Frequency | kHz | 20 - 750 | 20 | 750 |
| VCC Turn-on Threshold | V | 11.5 - 15.8 | 11.5 | 15.8 |
| VCC Minimum Operating Voltage | V | 9.0 - 10.0 | 9.0 | 10.0 |
| VCC Reset Level | V | 5.8 - 7.2 | 5.8 | 7.2 |
| Controller Supply Current in Skip Mode | μA | 500 - 1250 | 500 | 1250 |
| Over-temperature Protection Threshold | °C | - | - | - |
| Over-voltage Protection Threshold | V | - | - | - |
| Brown-out Turn-off Threshold | V | 0.965 - 1.035 | 0.965 | 1.035 |
Key Features
- High-frequency operation from 20 kHz to 750 kHz
- Current mode control scheme
- Automatic dead-time with maximum dead-time clamp
- Dedicated startup sequence for fast resonant tank stabilization
- Light load operation mode for improved efficiency
- Quiet skip operation mode to minimize transformer acoustic noise
- Latched or auto-recovery overload protection
- Latched or auto-recovery output short circuit protection
- Latched input for severe fault conditions (e.g., OVP or OTP)
- Out of resonance switching protection
- Open feedback loop protection
- Precise brown-out protection
- PFC stage operation control according to load conditions
- Startup current source with extremely low leakage current
- Dynamic self-supply (DSS) operation in off-mode or fault modes
- Pin to adjacent pin / open pin fail-safe
- Pb-free devices
Applications
- Adapters and offline battery chargers
- Flat panel display power converters
- Computing power supplies
- Industrial and medical power sources
Q & A
- What is the operating frequency range of the NCP13992AEDR2G? The operating frequency range is from 20 kHz to 750 kHz.
- What is the VCC turn-on threshold for the NCP13992AEDR2G? The VCC turn-on threshold is between 11.5 V and 15.8 V.
- What are the key protection features of the NCP13992AEDR2G? The key protection features include overload protection, over-current protection, brown-out detection, open optocoupler detection, automatic dead-time adjustment, over-voltage (OVP), and over-temperature (OTP) protections.
- How does the quiet skip mode operate in the NCP13992AEDR2G? The quiet skip mode minimizes transformer acoustic noise by adjusting the skip threshold via a resistor connected to ground.
- What is the purpose of the PFC mode in the NCP13992AEDR2G? The PFC mode provides supply voltage for the PFC front stage controller and/or enables the Vbulk sensing network HV switch according to load conditions.
- What are the typical applications of the NCP13992AEDR2G? Typical applications include adapters and offline battery chargers, flat panel display power converters, computing power supplies, and industrial and medical power sources.
- How does the brown-out protection work in the NCP13992AEDR2G? The brown-out protection turns off the device when the bulk voltage falls below a specified threshold (0.965 V to 1.035 V) and includes hysteresis to prevent oscillations.
- What is the maximum operating temperature for the NCP13992AEDR2G? The maximum operating temperature is up to 125°C.
- Does the NCP13992AEDR2G support dynamic self-supply operation? Yes, it supports dynamic self-supply (DSS) operation in off-mode or fault modes.
- Is the NCP13992AEDR2G a Pb-free device? Yes, the NCP13992AEDR2G is a Pb-free device.
- How does the startup current source function in the NCP13992AEDR2G? The startup current source has an extremely low leakage current and is used for startup and dynamic self-supply functions.
