NCP1000_06 ONSEMI [ON Semiconductor], NCP1000_06 Datasheet
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NCP1000_06
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NCP1000_06 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 ...
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FUNCTIONAL PIN DESCRIPTION Pin Function Feedback Input Ground 4 Startup 5 Power Switch Circuit MAXIMUM RATINGS (Notes 1 and 2) Rating Power Switch Circuit (Pin 5) Drain Voltage Range Drain Current Peak ...
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ELECTRICAL CHARACTERISTICS operating junction temperature that applies.) Characteristics OSCILLATOR Frequency (l = 1.1 mA) (Note 4) (Figure 25° 0°C to 125° −40°C to 125°C J PWM COMPARATOR Feedback Input PWM ...
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ELECTRICAL CHARACTERISTICS Characteristics POWER SWITCH CIRCUIT Power Switch Circuit On−State Resistance NCP1000 ( mA 25° 125°C (Note 8) J NCP1001 (I = 100 mA 25° 125°C ...
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Figure 2. Duty Cycle vs. FB Input Current 1000 100 Capacitance (mF) Figure 4. Charge Time vs 100 ...
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V Turn On CC 8.20 8.00 7.80 7.60 V Turn Off CC 7.40 7.20 −40 − Temperature (°C) Figure 8. V /UVLO Threshold vs. CC Temperature 25.0 20.0 NCP1000 15.0 NCP1001 10.0 5.0 NCP1002 0.0 ...
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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 ...
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Introduction The NCP1000 thru NCP1002 represent a new higher level of integration by providing on a single monolithic chip all of the active power, control, logic, and protection circuitry required to implement a high voltage flyback or forward converter. This ...
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Current Limit Comparator and Power Switch Circuit The NCP1000 series uses cycle−by−cycle current limiting as a means of protecting the output switch transistor from overstress. Current limiting is implemented by monitoring the instantaneous output switch current during conduction, and upon ...
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Figure 20 shows the timing waveforms in auto restart mode. The V pin receives its startup power from the high CC voltage startup circuit. Once the undervoltage lockout trip point is exceeded, the high voltage startup ...
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Applications Do not attempt to construct a converter circuit on a wire−wrap or plug−in prototype board. In order to ensure proper device operation and stability important to minimize the lead length and the associated inductance of the ground ...
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Feedback Input (R Voltage) fb Oscillator Ramp Oscillator Duty Cycle Oscillator Clock PWM Comparator Output PWM Latch Q Output Power Switch Circuit Gate Drive Leading Edge Blanking Input (Power Switch Circuit Current) Zero Duty Cycle Figure 18. Pulse Width Modulation ...
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Hysteretic Regulation Startup Circuit On Off I I start CC1 V Limiter CC (Pin 1) Power Switch Circuit Voltage (Pin 5) Switching Disabled Switching Startup Figure 20. Auto Restart Operation Timing Diagram APPLICATION #1: Offline Converter Provides 5.0 V, ...
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F −A− NOTE 2 −T− N SEATING PLANE 0.13 (0.005) The products described herein (NCP1000, 1001, 1002), may be covered by one or more of the following U.S. patents: 4,553,084; 5,418,410; 5,477,175; 5,760,639; ...