Overview
The NCP13992ACDR2G is a high-performance current mode controller designed for half-bridge resonant converters, manufactured by onsemi. This controller is distinguished by its integrated 600 V gate drivers, which simplify the layout and reduce the external component count. It features a suite of protection mechanisms and advanced control techniques to ensure safe and efficient operation in various applications.
Key Specifications
| Parameter | Unit | Typical | Minimum | Maximum |
|---|---|---|---|---|
| VCC Turn-on Threshold Level | V | 11.5 | 10.8 | 12.3 |
| VCC Minimum Operating Voltage | V | 9.5 | 9.0 | 10.0 |
| Controller Supply Current in Skip-Mode | μA | 700 | 500 | 1100 |
| Over-Temperature Protection (OTP) Threshold | °C | - | - | - |
| Over-Voltage Protection (OVP) Pin Clamping Voltage | V | 2.1 | 1.8 | 3.0 |
| Brown-Out Turn-Off Threshold | V | 1.000 | 0.965 | 1.035 |
| Operating Frequency Range | kHz | - | 20 | 750 |
Key Features
- High-Frequency Operation from 20 kHz up 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 NCP13992ACDR2G?
The NCP13992ACDR2G operates from 20 kHz up to 750 kHz.
- What are the key protection features of the NCP13992ACDR2G?
The controller includes overload protection, over-current protection, brown-out detection, open optocoupler detection, automatic dead-time adjust, over-voltage (OVP), and over-temperature (OTP) protections.
- How does the NCP13992ACDR2G handle light load conditions?
The controller features a light load operation mode and quiet skip operation mode to improve efficiency and minimize transformer acoustic noise under light load conditions.
- What is the purpose of the PFC MODE pin on the NCP13992ACDR2G?
The PFC MODE pin provides supply voltage for the PFC front stage controller and/or enables the Vbulk sensing network HV switch.
- What is the maximum operating voltage for the VCC pin?
The VCC pin accepts up to 20 V.
- How does the brown-out protection work on the NCP13992ACDR2G?
The brown-out protection is implemented through the VBULK/PFC_FB pin, with a turn-off threshold of approximately 1.000 V and a hysteresis current of around 5.0 μA.
- What is the significance of the dynamic self-supply (DSS) operation?
The DSS operation allows the controller to function in off-mode or fault modes, ensuring continuous operation under various conditions.
- What are the typical applications for the NCP13992ACDR2G?
Typical applications include adapters and offline battery chargers, flat panel display power converters, computing power supplies, and industrial and medical power sources.
- Is the NCP13992ACDR2G a Pb-Free device?
Yes, the NCP13992ACDR2G is a Pb-Free device.
- How does the controller handle out of resonance switching protection?
The controller includes out of resonance switching protection to ensure safe operation even when the resonant tank is not in resonance.
- What is the purpose of the SKIP pin on the NCP13992ACDR2G?
The SKIP pin sets the skip threshold via a resistor connected to ground, adjusting the skip mode operation.
