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NCP1650 Datasheet(PDF) 4 Page - ON Semiconductor |
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NCP1650 Datasheet(HTML) 4 Page - ON Semiconductor |
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4 / 31 page  NCP1650 http://onsemi.com 4 ELECTRICAL CHARACTERISTICS (continued) (Unless otherwise noted: VCC =14 volts, CT = 470 pF, C2 =0.1 mF, TJ =25Cfor typical values. For min/max values TJ is the applicable junction temperature.) Characteristic Symbol Min Typ Max Unit POWERERRORAMPLIFIER (Vcomp =2.0 V, Vref =2.5 V) Input Offset Voltage (Note 3) VIO -- 20 -- mV Transconductance gm 60 100 150 umho Output Source (Vref +0.2 V) IOsource 10 20 -- mA Output Sink (Vref -- 0.2 V) IOsink --10 --20 -- mA Boost Current (Vref = 2.5 V nominal) Source Boost Current Threshold Vfb(boost+) -- 1.175 -- V/V Sink Boost Current Threshold Vfb(boost--) -- 0.825 -- V/V Source Boost Current (1.3 X Vref) I(boost+) 150 250 -- mA Sink Boost Current I(boost--) --150 --285 -- mA AC ERROR AMPLIFIER Input Offset Voltage (Note 3) VIO -- 20 -- mV Transconductance gm 60 100 150 umho Output Source (Pin4= 4V,Pin5= 0V) IOsource 25 70 -- mA Output Sink (Pin4= 0V,Pin5= 4V) IOsink --25 --70 -- mA AC Inverting Input Clamp Voltage (250 mA) (TJ =25C) Vclamp 4.30 4.45 4.60 V AC Inverting Input Clamp Voltage (250 mA) (TJ =--40C to +125C) Vclamp 3.70 -- 4.60 V Gain from ACcomp to PWM+ (Av = VPWM+ /(VACcomp –Voffset)) (Note 3) AV -- 2.0 -- V/V CURRENT SENSE AMPLIFIER Input Bias Current (Pin 11) Ibias --40 --50 --80 mA Differential Input Voltage Range (Note 3) VIdiff -- --0.20 -- V Input Offset Voltage VIO 0 2.5 5.0 mV Output Gain (150 mA/0.150 V) (Voltage Loop Outputs) (Note 3) Av -- 1000 -- umho Output Gain (150 mA/0.150 V) (Max Pwr Output) (R10 =15 kΩ)(Note 3) Av -- 1000 -- umho Bandwidth (Note 3) funity -- 1.5 -- MHz PWM Output Voltage Gain (k = VPWM+/ Vsense--) (Pin 13 = Open) (TJ =--40C to + 125C) Av 12.9 15 17 V/V Current Limit Voltage Gain (k = Vace/a /Vsense--) (Vpin5 =0, R10 =15 k) Av 13 15 17 V/V Power Output Voltage Gain (k = Vpin10 /Vsense--) (TJ =--40C to + 125C) k 13.4 15 17 V/V Current Limit Threshold (Vpin5 = 0, Pin 13 = Open) ILIMthr 225 270 315 mV Current Limit Delay (0 to –450 mV Step) (Note 3) ILIMdelay -- 300 -- nS REFERENCE MULTIPLIER Dynamic Input Voltage Range Ac Input (p--input) (Note 3) Compensation Input (a--input) (Note 3) Offset Voltage (a--input) Vmax -- -- -- 3.75 -- 1.0 -- -- -- V Multiplier Gain (Note 3) k = Vmult out (VAC∕Vramp pk) × (VLOOPcomp − Voffset) k -- 8.0 -- 1.0/V 3. Verified by design. |
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