ncp1001 ON Semiconductor, ncp1001 Datasheet
ncp1001
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ncp1001 Summary of contents
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... NCP1000, NCP1001, NCP1002 Integrated Off−Line Switching Regulator The NCP1000 through NCP1002 series of integrated switching regulators, combine a fixed frequency PWM controller with an integrated high voltage power switch circuit. This chip allows for simple design and minimal parts count for very low cost applications which utilize an ac input ...
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... Pins 4 and 5 are the HV start−up and the drain of the LDMOS device, rated only to the max rating of the part , or 700 V. 2. This device contains Latch−up protection and exceeds $200 mA per JEDEC Standard JESD78. NCP1000, NCP1001, NCP1002 Functional Pin Description Description Positive input supply voltage. This pin is connected to an external capacitor for energy storage. The start− ...
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... − 125 Maximum package power dissipation limits must be observed. 4. Tested junction temperature range for this device series Guaranteed by design only. NCP1000, NCP1001, NCP1002 (V = 8.6 volts, pin 2 grounded for typical values. For min/max values Symbol f OSC = 1 ...
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... CURRENT LIMIT AND THERMAL PROTECTION Current Limit Threshold ( (Note 9) J NCP1000 NCP1001 NCP1002 Current Limit, Peak Switch Current NCP1000 (di/dt = 100 mA/ms) NCP1001 (di/dt = 200 mA/ms) NCP1002 (di/dt = 300 mA/ms) Opto Fail−safe Protection (Figure 12 125 C J Propagation Delay, Current Limit Threshold to Power Switch Circuit Output ...
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... Figure 2. Duty Cycle vs. FB Input Current 1000 100 Capacitance (mF) Figure 4. Charge Time vs 100 NCP1002 NCP1001 10 NCP1000 1.0 10 100 Switch Voltage (V) Figure 6. Power Switch Circuit Capacitance vs. Voltage NCP1000, NCP1001, NCP1002 2 1.5 1 0.5 0 1.6 1 4.00 3.50 3.00 2.50 2.00 1.50 1.00 0.50 0.00 100 1 Capacitance Figure 5. Startup Current vs. Startup Voltage 104 ...
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... NCP1002 0.0 −40 − Temperature ( C) Figure 10. Power Switch Circuit On Resistance vs. Temperature 24.0 22.0 20.0 18.0 16.0 14.0 12.0 10.0 8.0 −40 − Temperature ( C) Figure 12. Opto Fail−safe Trigger Current vs. Temperature NCP1000, NCP1001, NCP1002 1.80 1.60 1.40 1.20 1.00 0.80 0.60 0.40 0.20 0.00 75 100 125 −40 −25 Figure 9. Peak Current Limit Threshold 250 200 150 100 100 125 0 200 Figure 11 ...
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... Temperature ( C) Figure 14. Maximum Duty Cycle Feedback Current vs. Temperature 1600 1400 1200 1000 800 600 400 200 0 0 NCP1000, NCP1001, NCP1002 14.0 12.0 10.0 8.0 6.0 4.0 2.0 75 100 125 0 Figure 15. On Resistance vs. Current 50 100 150 200 250 DIpk (mA) Figure 16. Power Switch Circuit di/dt vs. DIpk http://onsemi ...
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... This feature is consistent with the Blue Angle requirements minimizes power NCP1000, NCP1001, NCP1002 OPERATING DESCRIPTION consumption while in the stand−by operation mode. For operation at no load, the output may skip cycles. This is a common occurrence for this type of control circuit ...
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... V is the rectified, filtered input voltage (volts the primary inductance of the flyback transformer (Henries) NCP1000, NCP1001, NCP1002 High Voltage Start−Up The NCP1000−1002 contain an internal start−up circuit that eliminates the need for external start−up components. In addition, this circuit increases the efficiency of the supply as it uses no power when in the normal mode of operation, but instead uses the power supplied by the auxiliary winding ...
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... The other extreme is the minimum value of R which will maximize the bias current S, into the chip and minimize the voltage overshoot in the event of an open optocoupler . NCP1000, NCP1001, NCP1002 For minimum bias current: Rs max + where: V AUXmin auxiliary winding. ...
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... Duty Cycle Ramp 7.0 kHz Filter 2.7 k NCP1000, NCP1001, NCP1002 offset by the board layout. The Power Switch Circuit pin can be offset if additional layout creepage distance is required. Due to the potentially high rate of change in switch current, a capacitor (if used), at pin 2, should have traces as short as possible, from pin 2 and ground. This will significantly reduce the level of switching noise that can be imposed upon the feedback control signal ...
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... Figure 18. Pulse Width Modulation Timing Diagram V Limiter CC (Pin 1) Power Switch Circuit Voltage (Pin 5) Switching Disabled Start−up Figure 19. Start−up and Normal Operation Timing Diagram NCP1000, NCP1001, NCP1002 Normal PWM Operating Range Regulation Threshold Switching Normal Operation http://onsemi.com 12 Current Limit Propagation Delay Current ...
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... Hysteretic Regulation Start−Up Circuit On Off I I start CC1 V Limiter CC (Pin 1) Power Switch Circuit Voltage (Pin 5) Switching Disabled Switching Start−up Figure 20. Auto Restart Operation Timing Diagram NCP1000, NCP1001, NCP1002 Off On Off On Off start CC2 ...
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... U2 NCP C5 1000 C4 For additional information on this application, please order application note AND8019/D from the Literature Distribution Center or download from our website at http://onsemi.com. NCP1000, NCP1001, NCP1002 APPLICATIONS INFORMATION Converter Test Data Parameter Line Regulation Load Regulation Combined Line/ Load Regulation ...
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... NCP1000, NCP1001, NCP1002 8 5 −B− −A− NOTE 2 C −T− N SEATING PLANE 0.13 (0.005) M PACKAGE DIMENSIONS DIP−8 P SUFFIX CASE 626−05 ISSUE http://onsemi.com 15 NOTES: 1. DIMENSION L TO CENTER OF LEAD WHEN FORMED PARALLEL. ...
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... Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada Email: ONlit@hibbertco.com N. American Technical Support: 800−282−9855 Toll Free USA/Canada NCP1000, NCP1001, NCP1002 JAPAN: ON Semiconductor, Japan Customer Focus Center 2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051 Phone: 81−3−5773−3850 ON Semiconductor Website: http://onsemi ...