Overview
The NCP13992AADR2G, produced by onsemi, is a high-performance current mode controller designed for half-bridge resonant converters. 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 NCP13992AADR2G also includes a dedicated output to drive the PFC (Power Factor Correction) controller, enhancing light load efficiency when a PFC front stage is required. Additionally, it incorporates a suite of protection features to ensure safe operation, including overload protection, over-current protection, brown-out detection, open optocoupler detection, automatic dead-time adjustment, over-voltage (OVP), and over-temperature (OTP) protections.
Key Specifications
| Parameter | Unit | Typical | Minimum | Maximum |
|---|---|---|---|---|
| VCC Turn-on Threshold | V | 15.3 | 11.5 | 16.3 |
| VCC Minimum Operating Voltage | V | 9.5 | 9.0 | 10.0 |
| VCC Reset Level | V | 6.6 | 5.8 | 7.2 |
| Operating Frequency Range | kHz | 20 kHz to 750 kHz | - | - |
| Over-Temperature Shutdown | °C | - | - | 125°C |
| Brown-Out Turn-Off Threshold | V | 1.000 | 0.965 | 1.035 |
| Current Sense Input Offset Voltage | mV | 110 | 60 | 160 |
Key Features
- High-frequency operation from 20 kHz up to 750 kHz.
- 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 for enhanced light load efficiency.
- Quiet skip mode technique to improve light load efficiency.
- Comprehensive protection features including overload protection, over-current protection, brown-out detection, open optocoupler detection, automatic dead-time adjustment, over-voltage (OVP), and over-temperature (OTP) protections.
- Soft-start and auto-recovery mechanisms for stable operation.
- High-performance current sense input with low leakage current and offset voltage.
Applications
The NCP13992AADR2G is suitable for a variety of applications, including:
- Half-bridge resonant converters.
- Power supplies requiring high efficiency and reliability.
- Systems needing integrated PFC front stages.
- Industrial power supplies.
- Consumer electronics power supplies.
- Medical and telecommunications power supplies.
Q & A
- What is the operating frequency range of the NCP13992AADR2G?
The NCP13992AADR2G operates within a frequency range of 20 kHz to 750 kHz.
- What are the integrated protection features of the NCP13992AADR2G?
The controller includes 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 NCP13992AADR2G improve light load efficiency?
The controller improves light load efficiency through its quiet skip mode technique and the dedicated output to drive the PFC controller.
- What is the purpose of the Brown-Out input function?
The Brown-Out input function eases the implementation of the controller in all applications by providing a threshold for bulk voltage monitoring.
- What is the maximum operating temperature for the NCP13992AADR2G?
The maximum operating temperature is 125°C.
- What is the typical VCC turn-on threshold for the NCP13992AADR2G?
The typical VCC turn-on threshold is 15.3 V.
- How does the soft-start mechanism work in the NCP13992AADR2G?
The soft-start mechanism involves an on-time period increment during startup to ensure stable operation.
- What is the purpose of the current sense input in the NCP13992AADR2G?
The current sense input is used for on-time modulation, out of resonant switching protection, over-current protection, and secondary side short circuit protection.
- What are the typical applications for the NCP13992AADR2G?
Typical applications include half-bridge resonant converters, power supplies requiring high efficiency and reliability, and systems needing integrated PFC front stages.
- How does the auto-recovery mechanism work in the NCP13992AADR2G?
The auto-recovery mechanism involves a common timer for all fault conditions, ensuring the controller can recover from faults automatically.
