Overview
The NCP1014ST100T3G is a self-supplied monolithic switcher integrated circuit (IC) designed by ON Semiconductor for low standby-power offline Switch-Mode Power Supplies (SMPS). This IC combines a fixed-frequency current-mode controller with a high-voltage power MOSFET, making it a comprehensive solution for building rugged and cost-effective power supplies. The NCP1014ST100T3G features a Dynamic Self-Supply (DSS) mechanism, eliminating the need for an auxiliary winding and simplifying transformer design. It also includes various protection features such as short-circuit protection, overcurrent protection, and thermal shutdown protection.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | SOT-223 | |
| Operating Temperature Range | -40 to 125 | °C |
| Input Voltage Range | 8 to 20 | V |
| Switching Frequency | 65, 100, 130 | kHz |
| Maximum Peak Current | 450 | mA |
| Drain Voltage | 0 to 700 | V |
| On-state Resistance (RDSon) | 11 | Ω |
| Duty Cycle Factor | 0 to 72% | |
| Topology | Flyback |
Key Features
- Integrated High-Voltage Power MOSFET: The NCP1014ST100T3G includes a 700 V MOSFET, integrating the power switch and controller in a single package.
- Dynamic Self-Supply (DSS): This feature allows the IC to be powered directly from the high-voltage DC rail, eliminating the need for an auxiliary winding.
- Adjustable Switching Frequency: The IC operates at frequencies of 65 kHz, 100 kHz, or 130 kHz, providing flexibility in design.
- Protection Features: Includes overcurrent protection, short-circuit protection, and thermal shutdown protection to ensure reliable operation.
- Frequency Jittering and Skip-Cycle Operation: Reduces EMI and improves efficiency during light load conditions.
- Low Standby Power: Designed to minimize power consumption during standby mode.
- Soft-Start and Internal Pull-up Resistor: Ensures smooth startup and feedback loop stability.
Applications
- USB Chargers and Power Adapters: Ideal for high-power density applications requiring efficient power management.
- AC/DC Converters: Used in various AC/DC conversion applications where high efficiency and reliability are crucial.
- LED Lighting: Suitable for LED lighting systems that require stable and efficient power supply.
- Motor Control Systems: Applied in industrial motor control systems that demand high power density and efficient power management.
Q & A
- What is the NCP1014ST100T3G used for?
The NCP1014ST100T3G is used for building low standby-power offline Switch-Mode Power Supplies (SMPS).
- What is the Dynamic Self-Supply (DSS) feature?
The DSS feature allows the IC to be powered directly from the high-voltage DC rail, eliminating the need for an auxiliary winding.
- What are the available switching frequencies for the NCP1014ST100T3G?
The IC operates at frequencies of 65 kHz, 100 kHz, or 130 kHz.
- What protection features does the NCP1014ST100T3G include?
The IC includes overcurrent protection, short-circuit protection, and thermal shutdown protection.
- What is the maximum peak current of the NCP1014ST100T3G?
The maximum peak current is 450 mA.
- What is the typical on-state resistance (RDSon) of the NCP1014ST100T3G?
The typical on-state resistance (RDSon) is 11 Ω.
- What is the operating temperature range of the NCP1014ST100T3G?
The operating temperature range is -40°C to 125°C.
- What package type is the NCP1014ST100T3G available in?
The IC is available in a SOT-223 package.
- What are some common applications of the NCP1014ST100T3G?
Common applications include USB chargers, power adapters, AC/DC converters, LED lighting, and motor control systems.
- Does the NCP1014ST100T3G support frequency jittering?
Yes, the IC supports frequency jittering to reduce EMI.
