Overview
The NCP1392BDR2G, produced by onsemi, is a high-voltage half-bridge driver IC designed primarily for applications using half-bridge topology. This self-oscillating driver is equipped with proprietary high-voltage technology, allowing it to operate with bulk voltages up to 600 V. It features an adjustable operating frequency range from 25 kHz to 480 kHz, which can be set using a single resistor. The device includes several protection mechanisms and control features, making it suitable for a variety of power conversion applications.
Key Specifications
| Characteristic | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Frequency Range | 25 kHz | - | 480 kHz | - |
| Bulk Voltage | -1 V | - | 600 V | V |
| Startup Voltage (VCC) | 10 V | 11 V | 12 V | V |
| Minimum Operating Voltage (VCC) | 8 V | 9 V | 10 V | V |
| Startup Current (VCC < VCCON, 0°C to 125°C) | - | - | 50 μA | μA |
| Peak Current Sink/Source Drive Capability | - | - | 1 A / 0.5 A | A |
| Fixed Dead Time (B Version) | 540 ns | 610 ns | 720 ns | ns |
| Fixed Dead Time (D Version) | 260 ns | 305 ns | 360 ns | ns |
| PFC Delay (B Version) | - | - | 100 ms | ms |
| PFC Delay (D Version) | - | - | 12.6 ms | ms |
| Temperature Shutdown | - | - | 140°C | °C |
| Package | - | - | SOIC-8 (Pb-Free) | - |
Key Features
- Wide Operating Frequency Range: Adjustable from 25 kHz to 480 kHz using a single resistor.
- Fixed Dead Time: Helps in reducing shoot-through current between the upper and lower power transistors.
- Adjustable Brown-Out Protection: Ensures the device operates within a specified bulk voltage range.
- PFC Delay Timer: Provides a delay to ensure the bulk voltage is stabilized before the driver starts.
- Non-Latched Enable Input: Allows immediate stop of output drivers when needed.
- Internal Temperature Shutdown: Protects the device from overheating.
- Low Startup Current: Startup current of 50 μA.
- High Voltage Capability: Operates up to 600 V bulk voltage.
- Internal 16 V VCC Clamp: Regulates the supply voltage for the driver section.
Applications
- Flat Panel Display Power Converters: Suitable for driving power stages in display power supplies.
- Low Cost Resonant SMPS: Ideal for resonant half-bridge applications.
- High Power AC/DC Adapters for Notebooks: Used in high-power adapter designs.
- Offline Battery Chargers: Applicable in battery charging systems.
- Lamp Ballasts: Can be used for dimming and control in lamp ballast applications.
Q & A
- What is the operating frequency range of the NCP1392BDR2G?
The operating frequency range is adjustable from 25 kHz to 480 kHz using a single resistor.
- What is the maximum bulk voltage the NCP1392BDR2G can handle?
The device can operate with bulk voltages up to 600 V.
- What is the purpose of the fixed dead time in the NCP1392BDR2G?
The fixed dead time helps in reducing shoot-through current between the upper and lower power transistors.
- How does the PFC delay timer function in the NCP1392BDR2G?
The PFC delay timer ensures that the bulk voltage is stabilized before the driver starts, with options for 100 ms or 12.6 ms delays.
- What is the role of the non-latched enable input in the NCP1392BDR2G?
The non-latched enable input allows immediate stop of output drivers when needed, useful for functions like dimming and skip mode.
- What is the startup current of the NCP1392BDR2G?
The startup current is 50 μA.
- What is the package type of the NCP1392BDR2G?
The device is packaged in an SOIC-8 (Pb-Free) package.
- What are some typical applications of the NCP1392BDR2G?
Typical applications include flat panel display power converters, low cost resonant SMPS, high power AC/DC adapters for notebooks, offline battery chargers, and lamp ballasts.
- How does the internal temperature shutdown protect the device?
The internal temperature shutdown protects the device from overheating by shutting down at 140°C.
- What is the function of the internal 16 V VCC clamp?
The internal 16 V VCC clamp regulates the supply voltage for the driver section.
