Overview
The onsemi NCP1271D65R2GH is a Soft-Skip Mode Standby PWM (Pulse Width Modulation) Controller designed for high-efficiency power conversion applications. This controller is part of the NCP1271 series, which is known for its excellent standby power consumption and robust design. It is particularly suited for AC-DC adapters, offline battery chargers, and various consumer electronic appliances. The NCP1271D65R2GH features advanced technologies such as adjustable skip level, internal high-voltage startup current source, and timer-based fault protection, making it an ideal choice for applications where component cost and ruggedness are critical.
Key Specifications
| Attribute | Value |
|---|---|
| Manufacturer | onsemi |
| Maximum Switching Frequency | 69 kHz |
| Output Voltage | 20 V |
| Output Current | 500 mA / -800 mA |
| Number of Outputs | 1 |
| Control Method | Current Mode |
| Topology | Flyback |
| Maximum Duty Cycle | 85% |
| Minimum Operating Supply Voltage | -0.3 V |
| Maximum Operating Supply Voltage | 20 V |
| Minimum Operating Temperature | -40 °C |
| Maximum Operating Temperature | +150 °C |
| Package Type | SOIC-7 |
| Mounting Type | Surface Mount |
| Dimensions | 5 x 4 x 1.5 mm |
| Rise Time | 30 ns |
| Fall Time | 20 ns |
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 such as STB, DVD, DVDR
Q & A
- What is the maximum switching frequency of the NCP1271D65R2GH?
The maximum switching frequency is 69 kHz.
- What is the output voltage range of the NCP1271D65R2GH?
The output voltage is up to 20 V.
- What is the topology of the NCP1271D65R2GH?
The topology is flyback.
- What is the operating temperature range of the NCP1271D65R2GH?
The operating temperature range is from -40 °C to +150 °C.
- What package type does the NCP1271D65R2GH use?
The package type is SOIC-7.
- What is the mounting type of the NCP1271D65R2GH?
The mounting type is surface mount.
- Does the NCP1271D65R2GH support adjustable skip level?
Yes, it supports an adjustable skip level.
- What is the peak current drive capability of the NCP1271D65R2GH?
The peak current drive capability is +500 mA / -800 mA.
- Is the NCP1271D65R2GH Pb-free?
Yes, it is a Pb-free device.
- What are some common applications of the NCP1271D65R2GH?
Common applications include AC-DC adapters, offline battery chargers, and consumer electronic appliances.
