DAP011 – PWM Current-Mode Controller

Part Number : DAP011

Function : PWM Current-Mode Controller

Manufactures : ON Semiconductor

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DAP011 image

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Description :

Customer Specific Device from ON Semiconductor DAP011/DAP011C PWM Current−Mode Controller for High−Power Universal Off−Line Supplies 5.0 V – 5.0 mA Reference Voltage Internal Temperature Shutdown Direct Optocoupler Connection Extremely Low No−Load Standby Power Adjustable Soft−Start This is a Pb−Free Device- Housed in an SO−14 package, the DAP011/DAP011C represents an enhanced version of the Maximus, DAP008, controller. Due to its high drive capability, SpeedKing drives large gate−charge MOSFETs which, together with internal ramp compensation and a user selectable frequency jittering, ease the design of modern AC/DC adapters. With an internal structure operating at a fixed 65/100 kHz frequency, the controller directly connects to the high−voltage rail for a loss less and clean startup sequence. Current−mode control also provides an excellent input audio−susceptibility and inherent pulse−by−pulse control. Internal ramp compensation easily prevents subharmonic oscillations from taking place in continuous conduction mode designs. When the current setpoint falls below a given value, e.g. the output power demand diminishes, the IC automatically enters the so−called skip cycle mode and provides excellent efficiency at light loads. Because this occurs at a user adjustable low peak current, no acoustic noise takes place. Due to a proprietary SoftSkip technique, the absence of sharp transitions during skip mode significantly reduces acoustical noise. The DAP011/DAP011C features an efficient protective circuitry which, in presence of an overcurrent condition, disables the output pulses while the device enters a safe burst mode, trying to restart. Once the default has gone, the device auto−recovers. By implementing a timer to acknowledge a fault condition, independently from the auxiliary supply, the designer’s task is eased when stringent fault mode conditions need to be met. A dedicated input helps triggering a latch−off circuitry which permanently disables output pulses. Features Typical Applications • High Power AC/DC Converters for TVs, Set−Top Boxes, etc. • Offline Adapters for Notebooks • All Power Supplies MARKING DIAGRAM 14 14 1 A WL Y WW G SOIC−14 D SUFFIX CASE 751A DAP011/DAP011C AWLYWWG 1 = Assembly Location = Wafer Lot = Year = Work Week = Pb−Free Package PIN CONNECTIONS 1 NC LATCH CTIMER JITTER SKIP FB CS 2 3 4 5 6 7 14 13 12 11 10 9 8 HV NC NC REF VCC DRV GND • Current−Mode Control with Adjustable Skip−Cycle Capability Internal Ramp Compensation Adjustable Frequency Jittering for Better EMI Signature Auto−Recovery Internal Output Short−Circuit Protection Adjustable Timer for Improved Short−Circuit Protection Dedicated Latch Input +500 mA/−800 mA Peak Current Capability Fixed Frequency Versions at 65/100 kHz 1 (Top View) ORDERING INFORMATION Device DAP011 DAP011C fosc (65 kHz) (100 kHz) Package SO−14 (Pb−Free) Shipp […]

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DAP011 Datasheet

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