PDF NCP1230A Data sheet ( Hoja de datos )

Número de pieza	NCP1230A
Descripción	Low-Standby Power Soft Skip Mode Controller
Fabricantes	ON Semiconductor
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No Preview Available ! NCP1230A Low- Standby Power Soft Skip Mode Controller The NCP1230A represents a major leap towards achieving low standby power in medium--to--high power Switched--Mode Power Supplies such as notebook adapters, off--line battery chargers and consumer electronics equipment. Housed in a compact 8--pin package (SO--8 or PDIP--7), the NCP1230A contains all needed control functionality to build a rugged and efficient power supply. The NCP1230A is a current mode controller with internal ramp compensation. Among the unique features offered by the NCP1230A is an event management scheme that can disable the front--end PFC circuit during standby, thus reducing the no load power consumption. The NCP1230A itself goes into soft skipping at light loads while limiting peak current (to 25% of nominal peak) so that no acoustic noise is generated. The NCP1230A has a high--voltage startup circuit that eliminates external components and reduces power consumption. The NCP1230A also features an internal latching function that can be used for OVP protection. This latch is triggered by pulling the CS pin above 3.0 V and can only be reset by pulling VCC to ground. True overload protection, internal 2.5 ms soft--start, internal leading edge blanking, internal frequency dithering for low EMI are some of the other important features offered by the NCP1230A. 8 1 http://onsemi.com MARKING DIAGRAMS SO--8 VHVIC D SUFFIX CASE 751 8 230Ay ALYWy G 1 8 1 PDIP--7 VHVIC P SUFFIX CASE 626B 1 1230Axx AWL YYWWG Features  Current--Mode Operation with Internal Ramp Compensation  Internal High--Voltage Startup Current Source for Loss Less Startup  Extremely Low No--Load Standby Power  Soft Skip Mode at Low Peak Currents (Skip--Cycle)  Direct Connection to PFC Controller for Improved No--Load Standby Power  Internal 2.5 ms Soft--Start  Internal Leading Edge Blanking  Short--Circuit Protection Independent of Auxiliary Level  Internal Frequency Dithering for Improved EMI Signature  +500 mA/--800 mA Peak Current Drive Capability  Available in Three Frequency Options: 65 kHz, 100 kHz, and 133 kHz  Direct Optocoupler Connection  SPICE Models Available for TRANsient and AC Analysis  Pb--Free Packages are Available Typical Applications  High Power AC--DC Adapters for Notebooks, etc.  Offline Battery Chargers  Set--Top Boxes Power Supplies, TV, Monitors, etc. xx = Device Code: 65, 100, 133 yy = Device Code: 65, 100, 133 A = Assembly Location W, WW = Work Week L = Wafer Lot Y, YY = Year G = Pb--Free Package G = Pb--Free Package PIN CONNECTIONS 1 PFC Vcc FB CS GND 8 HV VCC DRV ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 4 of this data sheet.  Semiconductor Components Industries, LLC, 2010 December, 2010 -- Rev. 7 1 Publication Order Number: NCP1230A/D 1 page NCP1230A ELECTRICAL CHARACTERISTICS (For typical values TJ = 25C, for min/max values TJ = --40C to +125C, Max TJ = 150C, VCC = 13 V, VPIN8 = 30 V unless otherwise noted.) Characteristic Symbol Pin Min Typ Max Unit Supply Section (All frequency versions, otherwise noted) Turn--On Threshold Level, VCC Going Up (Vfb = 2.0 V) VCCOFF 6 11.6 12.6 13.6 V Minimum Operating Voltage after Turn--On VCC(min) 6 7.0 7.7 8.4 V VCC Decreasing Level at which the Latch--Off Phase Ends (Vfb = 3.5 V) VCClatch 6 5.0 5.6 6.2 V VCC Level at which the Internal Logic gets Reset VCCreset 6 -- 4.0 -- V Internal IC Consumption, No Output Load on Pin 6 (Vfb = 2.5 V) ICC1 6 0.6 1.1 1.8 mA Internal IC Consumption, 1.0 nF Output Load on Pin 6, FSW = 65 kHz ICC2 6 1.3 1.8 2.5 mA (Vfb = 2.5 V) Internal IC Consumption, 1.0 nF Output Load on Pin 6, FSW = 100 kHz ICC2 6 1.3 2.2 3.0 mA Internal IC Consumption, 1.0 nF Output Load on Pin 6, FSW = 133 kHz ICC2 6 1.3 2.8 3.3 mA Internal IC Consumption, Latch--Off Phase ICC3 6 400 680 1000 mA Internal Startup Current Source High--Voltage Current Source, 1.0 nF Load (VCCOFF --0.2 V, Vfb = 2.5 V, VPIN8 = 30 V) High--Voltage Current Source (VCC = 0 V) Minimum Startup Voltage (Ic = 0.5 mA, VCCOFF --0.2 V, Vfb = 2.5 V) Startup Leakage Drive Output IC1 IC2 VHVmin IHVLeak 8 1.8 3.2 4.2 mA 8 1.8 4.4 5.6 mA 8 -- 20 23 V 8 10 30 80 mA Output Voltage Rise--Time @ CL = 1.0 nF, 10--90% of Output Signal Output Voltage Fall--Time @ CL = 1.0 nF, 10--90% of Output Signal Source Resistance, RLoad 300 Ω (Vfb = 2.5 V) Sink Resistance, at 1.0 V on Pin 5 (Vfb = 3.5 V) Pin 1 Output Impedance (or Rdson between Pin 1 and Pin 6 when SW1 is closed) Rload on Pin 1 = 680 Ω Current Comparator and Thermal Shutdown Tr Tf ROH ROL RPFC 5 -- 40 -- ns 5 -- 15 -- ns 5 6.0 12.3 25 Ω 5 3.0 7.5 18 Ω 1 6.0 11.7 23 Ω Input Bias Current @ 1.0 V Input Level on Pin 3 Maximum Internal Current Setpoint Tj = 25C Tj = --40C to +125C IIB ILimit 3 -- 0.02 -- mA 3 1.010 1.063 1.116 V 0.979 -- 1.127 Default Internal Setpoint for Skip Cycle Operation and Standby Detection Vskip 3 600 750 900 mV Default Internal Setpoint to Leave Standby Vstby--out -- 1.0 1.25 1.5 V Propagation Delay from CS Detected to Gate Turned Off (VGate = 10 V) (Pin 5 Loaded by 1.0 nF) TDEL CS 3 -- 90 180 ns Leading Edge Blanking Duration Soft--Start Period / Soft Skip Period (Note 3) TLEB SS 3 100 200 350 ns -- -- 2.5 -- ms Temperature Shutdown, Maximum Value (Note 3) Hysteresis while in Temperature Shutdown (Note 3) 3. Verified by Design. TSD TSD hyste -- -- 150 165 -- 25 -- -- C C http://onsemi.com 5 5 Page NCP1230A TYPICAL PERFORMANCE CHARACTERISTICS 150 3.50 140 3.25 130 3.00 120 110 2.75 100 --50 --25 0 25 50 75 100 125 TJ, JUNCTION TEMPERATURE (C) 150 Figure 27. Fault Time Delay vs. Temperature 2.50 --50 --25 0 25 50 75 100 125 TJ, JUNCTION TEMPERATURE (C) 150 Figure 28. VLatch vs. Temperature http://onsemi.com 11 11 Page

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