Overview
The NCP1076ABP100G is an enhanced offline switcher integrated circuit (IC) produced by onsemi. This IC integrates a fixed frequency current mode controller with a 700 V MOSFET, offering a high level of integration and efficiency. It is designed for robust and highly efficient power supplies, particularly suitable for applications requiring reliable and efficient power conversion.
The device features soft start, frequency jittering, short circuit protection, skip cycle operation, and dynamic self-supply (DSS), eliminating the need for an auxiliary winding. It operates at one of two available frequencies (65 kHz or 100 kHz) and enters frequency foldback mode and skip mode to reduce standby consumption at light loads.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | PDIP-7 (Less Pin 6 for some versions) |
| Switching Frequency | 65 kHz or 100 kHz (130 kHz for B version only) |
| Peak Current | 650 mA |
| MOSFET Voltage Rating | 700 V |
| MOSFET RDS(on) | 4.8 Ω |
| Operating Supply Current | 1.26 mA |
| Minimum Operating Temperature | -40°C |
| Maximum Operating Temperature | +150°C |
| No Load Power Consumption | 300 µA |
| Duty Cycle - Max | 72% |
Key Features
- Integrated 700 V MOSFET with RDS(on) of 4.8 Ω
- Current-Mode Fixed Frequency Operation (65 kHz or 100 kHz)
- Peak Current: 650 mA
- Skip-Cycle Operation at Low Peak Current
- Dynamic Self-Supply (DSS)
- Auto-Recovery Output Short Circuit Protection with Timer-Based Detection
- Frequency Foldback Operation
- Frequency Jittering (including during frequency foldback mode)
- Adjustable Brown-out Protection and Over Voltage Protection (OVP)
- Over Power Protection
- Soft Start and Maximum Peak Current Set Point
- Ramp Compensation
Applications
- Auxiliary & Standby Power Supply
- Major Home Appliances power supplies
- Low to medium Power Chargers & Adapters
- White Goods & Home Appliances
- E-Meters
- Industrial auxiliary Power Supply
- Consumer Equipment Power Supply
Q & A
- What is the NCP1076ABP100G used for?
The NCP1076ABP100G is used for enhanced offline switching in power supplies, particularly in applications requiring high efficiency and reliability.
- What are the switching frequencies available for the NCP1076ABP100G?
The switching frequencies available are 65 kHz and 100 kHz, with 130 kHz available for the B version only.
- What is the peak current rating of the NCP1076ABP100G?
The peak current rating is 650 mA.
- What type of protection features does the NCP1076ABP100G include?
The device includes short circuit protection, over voltage protection with auto recovery, brown-out protection, and over power protection.
- How does the NCP1076ABP100G manage power consumption at light loads?
The device enters frequency foldback mode and skip mode to reduce standby consumption at light loads.
- What is the typical operating supply current of the NCP1076ABP100G?
The typical operating supply current is 1.26 mA.
- What is the maximum duty cycle of the NCP1076ABP100G?
The maximum duty cycle is 72%.
- What are some common applications for the NCP1076ABP100G?
Common applications include auxiliary and standby power supplies, home appliances, low to medium power chargers and adapters, and industrial auxiliary power supplies.
- How does the dynamic self-supply (DSS) feature work?
The DSS feature eliminates the need for an auxiliary winding by self-supplying the IC, which can be stopped by connecting an auxiliary winding to reduce input power consumption.
- What is the no load power consumption of the NCP1076ABP100G?
The no load power consumption is 300 µA.
