Overview
The NCP1271D100R2G, produced by onsemi, is a Soft-Skip Mode Standby PWM Controller designed for high-efficiency and reliability in power conversion applications. This controller is part of the NCP1271 series, which is pin-to-pin compatible with the existing NCP120X series. It features an adjustable Soft-Skip mode, internal high-voltage startup FET, and various protective mechanisms, making it an excellent choice for converters where ruggedness and component cost are critical.
The NCP1271D100R2G is particularly suited for applications requiring low standby power consumption, efficient protective circuitry, and reduced acoustic noise. Its design incorporates advanced features such as frequency jittering for softened EMI signature and timer-based fault detection, enhancing its overall performance and reliability.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Current - Max | 3.5 mA |
| Supply Voltage | 20 V |
| Frequency - Max | 100 kHz |
| Topology | Flyback |
| Duty Cycle - Min | 75% |
| Duty Cycle - Max | 85% |
| Operating Temperature Range | -40°C to +150°C |
| Storage Temperature Range | -60°C to +150°C |
| Thermal Resistance | 177°C/W |
| Package Style | SOIC-7 |
| Mounting Method | Surface Mount |
Key Features
- Fixed-Frequency Current-Mode Operation with Ramp Compensation and Skip Cycle in Standby Condition
- Timer-Based Fault Protection for Improved Overload Detection
- Soft-Skip Mode Technique for Optimal Noise Control in Standby
- Internal High-Voltage Startup Current Source for Lossless Startup
- ±5% Current Limit Accuracy over the Full Temperature Range
- Adjustable Skip Level
- Internal Latch for Easy Implementation of Overvoltage and Overtemperature Protection
- Frequency Jittering for Softened EMI Signature
- +500 mA/−800 mA Peak Current Drive Capability
- Sub-100 mW Standby Power can be Achieved
- Pin-to-Pin Compatible with the Existing NCP120X Series
- Pb-Free Device
Applications
- AC-DC Adapters for Notebooks, LCD Monitors
- Offline Battery Chargers
- Consumer Electronic Appliances (STB, DVD, DVDR)
Q & A
- What is the primary function of the NCP1271D100R2G?
The NCP1271D100R2G is a Soft-Skip Mode Standby PWM Controller designed for high-efficiency power conversion applications.
- What is the maximum supply voltage for the NCP1271D100R2G?
The maximum supply voltage is 20 V.
- What is the operating temperature range of the NCP1271D100R2G?
The operating temperature range is -40°C to +150°C.
- What is the topology of the NCP1271D100R2G?
The topology is Flyback.
- Does the NCP1271D100R2G support frequency jittering?
- What is the maximum standby power consumption of the NCP1271D100R2G?
Sub-100 mW standby power can be achieved.
- Is the NCP1271D100R2G Pb-free?
- What are some common applications of the NCP1271D100R2G?
Common applications include AC-DC adapters for notebooks and LCD monitors, offline battery chargers, and consumer electronic appliances.
- Does the NCP1271D100R2G have internal high-voltage startup current source?
- What is the peak current drive capability of the NCP1271D100R2G?
The peak current drive capability is +500 mA/−800 mA.
