NCP1280 |
RFQ for NCP1280 Required Field |
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| Technical/Catalog Information | NCP1280DR2 |
| Vendor | ON Semiconductor |
| Category | Integrated Circuits (ICs) |
| Packaging | Tape & Reel (TR) |
| Package / Case | 16-SOIC (3.9mm Width) |
| Power (Watts) | - |
| Voltage - Input | 11.5 ~ 25 V |
| Voltage - Output | 700V |
| Frequency Range | 160 ~ 320khz |
| Operating Temperature | -40°C ~ 150°C |
| Output Isolation | Isolated |
| Lead Free Status | Contains Lead |
| RoHS Status | RoHS Non-Compliant |
| Other Names | NCP1280DR2 NCP1280DR2 |
| Product | Manufacturers | Pack | D/C |
| NCP1280 | - | 04+ | SOP3.9 |
The NCP1280 provides a highly integrated solution for off−line power supplies requiring high−efficiency and low parts count. This voltage mode controller provides control outputs for driving a forward converter primary MOSFET and an auxiliary MOSFET for active clamp circuit.
The second output with its programmable delay can also be used for driving a synchronous rectifier on the secondary or for asymmetric half bridge circuits. Incorporation of high voltage start−up circuitry (with 700 V capability) reduces parts count and system power dissipation. Additional features such as line UV/OV protection, soft start, single resistor programmable (high) frequency oscillator, line voltage feedforward, dual mode overcurrent protection and maximum duty cycle control, allow converter optimization at minimal cost. Compared to a traditional forward converter, an NCP1280 based converter can offer significant efficiency improvements and system cost savings.
Typical Application |
Features |
| • Off−Line Power Converters in 100−500 W Range• Desktop Power Supplies (High−End)• Industrial Power Supplies• Plasma/LCD TV Front−End | • Internal High Voltage Start−Up Regulator (25 V to 700 V)• Dual Control Outputs with Adjustable Overlap Delay• Programmable Maximum Duty Cycle Control• Single Resistor Oscillator Frequency Setting• Fast Line Feedforward• Line Under/Overvoltage Lockout• Dual Mode Overcurrent Protection• Programmable Soft Start• Precision 5.0 V Reference |
