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发布者:来自网络 发布时间:2014-4-18 阅读:1932次    关键字: AC-DC
AX6228-Current Mode PWM Power Switch


AX6228-Current Mode PWM Power Switch DataSheet

GENERAL DEGENERAL 

    AX6228 combines a dedicated current mode PWM controller with a high voltage power MOSFET. It is optimized for high performance, low standby power, and cost effective off-line flyback converter applications in under 16W range.
    AX6228 offers complete protection coverage with automatic self-recovery feature including Cycle-by-Cycle current limiting (OCP), over load protection (OLP), VDD over voltage clamp and under voltage lockout (UVLO). Excellent EMI performance is achieved with proprietary frequency shuffling technique together with soft switching control at the totem pole gate drive output.
    The tone energy at below 20KHZ is minimized in the design and audio noise is eliminated during operation. AX6228 is offered in PDIP-8L package.

FEATURES
- Power on Soft Start Reducing MOSFET VDS Stress
- Frequency Shuffling for EMI
- Extended Burst Mode Control For Improved Efficiency and Minimum Standby Power Design
- Audio Noise Free Operation
- Fixed 50KH Switching Frequency
- Internal Synchronized Slope Compensation
- Low VDD Startup Current and Operating Current
- Leading Edge Blanking on Current Sense Input
- Good Protection Coverage With Auto Self-Recovery
 VDD Over Voltage Clamp and Under Voltage Lockout with Hysteresis (UVLO)
 Line Input Compensatede Cycle -by -Cycle Over-current Threshold Setting for Constant Output Power Limiting Over Universal Input Voltage Range
 Overload Protection (OLP)
 Over Voltage Protection (OVP)
- Pb -Free SOP-8L

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