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PDF AX6224 Data sheet ( Hoja de datos )
| Número de pieza | AX6224 | |
| Descripción | Current Mode PWM Power Switch | |
| Fabricantes | AXElite | |
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AX6224
Current Mode PWM Power Switch
GENERAL DESCRIPTION
AX6224 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 8W range.
AX6224 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. AX6224 is offered in SOP-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 50KHZ Switching Frequency
- Internal Synchronized Slope Compensation
- Low VDD Startup Current and Low 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 Compensated Cycle-by-Cycle Over-current Threshold Setting for
Constant Output Power Limiting Over Universal Input Voltage Range
Overload Protection (OLP)
Over Voltage Protection (OVP)
- Compatible with OB2353/OB2354/CR6224
- Pb-Free SOP-8L
1/9
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.0 Apr. 05, 2012
1 page  
AX6224
ELECTRICAL CHARACTERISTICS (CONTINUOUS)
(TA=25°C, VDD=VDDG=16V, unless otherwise specified)
Characteristics
Symbol
Conditions
Oscillator
Normal Oscillation
Frequency
Frequency Temperature
Stability
Frequency Voltage Stability
FOSC
Δf_Temp
Δf_VDD
Maximum Duty Cycle
D_max FB=3.3V, CS=0V
Burst Mode Base Frequency F_Burst
Power MOSFET Section
MOSFET Drain Source
Breakdown Voltage
Static Drain to Source On
Resistance
Frequency
Frequency Modulation
Range/Base Frequency
BVdss
RDS(ON)
Δ_VDD
APPLICATION CIRCUIT
Min Typ Max Units
43 48 53 KHz
-5- %
-5- %
70 80 90 %
- 22 - KHz
600 - - V
7 9 11 Ω
-4 - 4 %
AX6224
5/9
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.0 Apr. 05, 2012
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet AX6224.PDF ] | |
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