NCP1560_06 ONSEMI [ON Semiconductor], NCP1560_06 Datasheet
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NCP1560_06
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NCP1560_06 Summary of contents
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NCP1560 Full Featured Voltage Mode PWM Controller The NCP1560 PWM controller contains all the features and flexibility needed to implement voltage−mode control in high performance single ended DC−DC converters. This device cost effectively reduces system part count with the inclusion ...
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High Voltage V Startup in Regulator UV UV/OV Fault Detection CS CSKIP R T Oscillator FF DC MAX Figure 1. Simplified Block Diagram 5.0 V Reference Delay Output Modulator Logic Drivers http://onsemi.com 2 V AUX V REF OUT1 OUT2 t ...
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Disable START 16 V AUX C AUX + 14 V AUX(on)/AUX(off) − GND Disable_V − 1.52 V − 2 UV/OV + − + 3.61 V − V REF 12.3 mA Disable − ...
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PIN DESCRIPTION Pin Name 1 V This pin is connected to the bulk DC input voltage supply. A constant current source supplies current from in this pin to the capacitor connected on the V range is 21 150 ...
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MAXIMUM RATINGS Symbol V Input Line Voltage in V Auxiliary Supply Voltage AUX I Auxiliary Supply Input Current AUX V OUT1 and OUT2 Voltage OUT I OUT1 and OUT2 Output Current OUT V 5.0 V Reference Voltage REF I 5.0 ...
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ELECTRICAL CHARACTERISTICS R = 60.4 kW 432 kW, for typical values Characteristic STARTUP CONTROL AND V REGULATOR AUX V Regulation AUX Startup Threshold/V Regulation Peak (V AUX Minimum Operating V Valley Voltage After Turn−On AUX ...
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ELECTRICAL CHARACTERISTICS R = 60.4 kW 432 kW, for typical values Characteristic OSCILLATOR Frequency (R = 101 kW 25° −40°C to 125°C J Frequency ...
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STARTUP THRESHOLD MINIMUM OPERATING 6 THRESHOLD 5 −50 − JUNCTION TEMPERATURE (°C) J Figure 3. Auxiliary Supply Voltage Thresholds versus Junction Temperature 17.5 17.0 16.5 16.0 15.5 15.0 ...
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OSC −50 − JUNCTION TEMPERATURE (°C) J Figure 9. Operating Auxiliary Supply Current versus Junction Temperature 160 150 OV HYSTERESIS 140 ...
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T , JUNCTION TEMPERATURE (°C) J Figure 15. Oscillator Frequency versus Junction Temperature −50 −25 0 ...
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T , JUNCTION TEMPERATURE (°C) J Figure 21. V Input Resistance versus EA Junction Temperature 5.03 5. REF 4. REF ...
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Measured from 10 AUX T = 25° 100 C , LOAD CAPACITANCE (pF) L Figure 27. Outputs Rise ...
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Line Under/Overvoltage Shutdown The NCP1560 incorporates a line under/overvoltage shutdown (UV/OV) circuit. The undervoltage (UV) threshold is 1.52 V and the overvoltage threshold (OV) is 3.61 V, for a ratio of 1:2.4. The UV/OV circuit can be biased using an ...
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Once the condition is removed and V reaches 11 V, the controller initiates a soft−start cycle. Figure 31 shows the relationship between the UV/OV voltage, the outputs and the soft−start voltage. V AUX(on) V AUX V AUX(off) ...
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Current Limit The NCP1560 has two over current protection modes, cycle−by−cycle and cycle skip. It allows the NCP1560 to handle momentary and hard shorts differently for the best tradeoff in performance and safety. The outputs are disabled typically 90 ns ...
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Maximum Duty Cycle A dedicated internal comparator limits the maximum ON time of OUT1 by comparing the FF Ramp Ramp voltage exceeds V , the output of the Max DC(inv) DC Comparator goes high. This will reset ...
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If the soft−start period is too long, V 7.0 V before the converter output is completely in regulation causing the outputs to be disabled. If the converter output is not completely discharged when the outputs are reenabled, the converter will ...
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Figure 36. Board Arrangement http://onsemi.com 18 2.70” ...
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R31 10 C20 330 C19 330 C25 0.1 C18 47 C17 47 R20 C16 47 C15 47 NTB75N03 L09 X4 X5 MMBT2907 R25 10 k MMBD914 R24 C22 1000 p R23 R27 6.2 0 (Short) 1T 6,7 ...
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G −T− SEATING PLANE 0.25 (0.010 The product described herein (NCP1560) may be covered by one or more U.S. patents. There may be other patents pending. ON Semiconductor and are registered trademarks ...