Overview
The NCP1341B1D1R2G is a highly integrated quasi-resonant flyback controller produced by onsemi. This component is designed for high-performance off-line power converters and is particularly suited for applications requiring low parts count and cost effectiveness. The NCP1341B1D1R2G features advanced protective mechanisms and efficient power management, making it an ideal choice for various power supply designs, including AC-DC adapters and open-frame power supplies.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | SOIC N | |
| Pin Count | 9 | |
| Package Height | 1.75 (Max) | mm |
| Package Width | 4 (Max) | mm |
| Package Length | 5 (Max) | mm |
| Mounting Type | Surface Mount | |
| Operating Temperature Range | -40 to 125 | °C |
| VCC Range | 9 to 28 | V |
| Maximum Frequency Clamp | Up to 110 kHz | |
| Thermal Shutdown Temperature | 140 °C |
Key Features
- Quasi-Resonant Operation: The NCP1341B1D1R2G operates in quasi-resonant mode, transitioning to frequency foldback and quiet-skip modes to reduce switching losses and minimize acoustic noise.
- Power Excursion Mode (PEM): Allows brief operation in continuous conduction mode (CCM) at up to 2x the maximum output power, reducing the need for a larger transformer.
- High-Voltage Startup Circuit: Includes a high-voltage current source for low standby power consumption and fast startup time.
- Internal Protective Features: Includes internal brownout detection, non-dissipative Over Power Protection (OPP), latched overvoltage protection, NTC-ready overtemperature protection, and line removal detection.
- X2 Capacitor Discharge Circuitry: Automatically discharges X2 input capacitors to comply with IEC60950 standards and prevent electrical shock.
- Low Power Consumption Mode: Minimized current consumption for extremely low standby power requirements.
Applications
The NCP1341B1D1R2G is suitable for a variety of applications, including:
- AC-DC Adapters: Ideal for designing efficient and compact power adapters.
- Open-Frame Power Supplies: Used in open-frame power supplies where low parts count and cost effectiveness are crucial.
- General Power Conversion: Applicable in various power conversion scenarios requiring high performance and reliability.
Q & A
- What is the package type of the NCP1341B1D1R2G?
The package type is SOIC N with 9 pins.
- What is the operating temperature range of the NCP1341B1D1R2G?
The operating temperature range is -40°C to 125°C).
- What is the Power Excursion Mode (PEM) in the NCP1341B1D1R2G?
The PEM allows brief operation in CCM at up to 2x the maximum output power, reducing the need for a larger transformer).
- Does the NCP1341B1D1R2G have internal protective features?
Yes, it includes internal brownout detection, non-dissipative OPP, latched overvoltage protection, NTC-ready overtemperature protection, and line removal detection).
- How does the NCP1341B1D1R2G manage X2 capacitor discharge?
The component includes an automatic X2 capacitor discharge circuit to comply with IEC60950 standards and prevent electrical shock).
- What is the maximum frequency clamp in the NCP1341B1D1R2G?
The maximum frequency clamp can be set up to 110 kHz and can be adjusted via an external resistor).
- Is the NCP1341B1D1R2G suitable for automotive applications?
No, it is not specified for automotive applications).
- What is the thermal shutdown temperature of the NCP1341B1D1R2G?
The thermal shutdown temperature is 140°C).
- Does the NCP1341B1D1R2G support low standby power consumption?
Yes, it features a high-voltage startup circuit that minimizes standby power consumption).
- What are some common applications of the NCP1341B1D1R2G?
Common applications include AC-DC adapters, open-frame power supplies, and general power conversion scenarios).
