Overview
The NCP13992AHDR2G, 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 built-in Brown-Out input function, which eases implementation in various applications. The NCP13992AHDR2G also includes a dedicated output to drive the PFC controller, enhancing light load efficiency and quiet skip mode operation to minimize transformer acoustic noise.
Key Specifications
| Parameter | Unit | Min | Max | |
|---|---|---|---|---|
| VCC_ON | V | 11.5 | 15.3 | 16.3 |
| VCC_OFF | V | 9.0 | 9.5 | 10.0 |
| VCC_RESET | V | 5.8 | 6.6 | 7.2 |
| ICC_SKIP-MODE | μA | 500 | 550 | 600 |
| Operating Frequency | kHz | 20 | - | 750 |
| Brown-Out Turn-Off Threshold (VBO) | V | 0.965 | 1.000 | 1.035 |
| Over-Temperature Protection (OTP) | - | - | - | - |
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 NCP13992AHDR2G?
The NCP13992AHDR2G operates from 20 kHz up to 750 kHz.
- What is the purpose of the Brown-Out protection feature?
The Brown-Out protection feature ensures the controller turns off when the bulk voltage falls below a certain threshold, preventing operation under low voltage conditions.
- How does the Quiet Skip mode improve efficiency?
The Quiet Skip mode improves efficiency by minimizing transformer acoustic noise during light load conditions, thus enhancing overall system performance.
- What types of protection does the NCP13992AHDR2G offer?
The NCP13992AHDR2G offers several protection features including overload protection, over-current protection, over-voltage protection (OVP), over-temperature protection (OTP), open optocoupler detection, and out of resonance switching protection.
- What is the function of the PFC MODE pin?
The PFC MODE pin provides supply voltage for the PFC front stage controller and/or enables the Vbulk sensing network HV switch.
- How does the Dynamic Self-Supply (DSS) operation work?
The Dynamic Self-Supply (DSS) operation allows the controller to maintain functionality in off-mode or fault modes by using an internal current source.
- What is the significance of the automatic dead-time adjustment?
The automatic dead-time adjustment ensures optimal switching times between the high and low side MOSFETs, preventing hard switching cycles and improving overall efficiency.
- What are the typical applications for the NCP13992AHDR2G?
The NCP13992AHDR2G is typically used in adapters and offline battery chargers, flat panel display power converters, computing power supplies, and industrial and medical power sources.
- How does the startup current source function?
The startup current source has an extremely low leakage current and is used to perform the functions of the startup current source and dynamic self-supply.
- What is the purpose of the LLC feedback input (LLC FB) pin?
The LLC feedback input (LLC FB) pin defines the operating frequency based on given load conditions and activates skip mode operation under light load conditions.
