ncp1611 ON Semiconductor, ncp1611 Datasheet
ncp1611
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ncp1611 Summary of contents
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... NCP1611 Enhanced, High-Efficiency Power Factor Controller The NCP1611 is designed to drive PFC boost stages based on an innovative Current Controlled Frequency Fold−back (CCFF) method. In this mode, the circuit classically operates in Critical conduction Mode (CrM) when the inductor current exceeds a programmable value. When the current is below this preset level, the NCP1611 linearly decays the frequency down to about 20 kHz when the current is null ...
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line bo1 EMI Filter bo2 MAXIMUM RATINGS TABLE Symbol Pin CONTROL DRV 6 Power Dissipation and ...
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TYPICAL ELECTRICAL CHARACTERISTICS TABLE specified) Symbol START−UP AND SUPPLY CIRCUIT V Start−Up Threshold, V CC(on) V Minimum Operating Voltage, V CC(off) V CC(HYST) I CC(start) I Operating Consumption, no switching (V CC(op)1 I Operating Consumption, 50 kHz switching, no load ...
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TYPICAL ELECTRICAL CHARACTERISTICS TABLE specified) Symbol CURRENT SENSE AND ZERO CURRENT DETECTION BLOCKS T Over−Current Protection Leading Edge Blanking Time (guaranteed by design) LEB,OCP T “Overstress” Leading Edge Blanking Time (guaranteed by design) LEB,OVS Over−Current Protection Delay from V T ...
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TYPICAL ELECTRICAL CHARACTERISTICS TABLE specified) Symbol BROWN−OUT PROTECTION AND FEED−FORWARD I V CONTROL(BO) control V Comparator Threshold for Line Range Detection Comparator Threshold for Line Range Detection Comparator Hysteresis for Line Range Detection HL(hyst) ...
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DETAILED PIN DESCRIPTION Pin Number Name The error amplifier output is available on this pin. The network connected between this pin and ground adjusts the regulation loop bandwidth that is typically set below achieve high 1 V ...
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Figure 2. Block Diagram http://onsemi.com 7 ...
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T , JUNCTION TEMPERATURE (°C) J Figure 3. Start−Up Threshold vs. Temperature (A Version) CC(on) 10.00 9.75 9.50 9.25 9.00 8.75 8.50 8.25 8.00 ...
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T , JUNCTION TEMPERATURE (°C) J Figure 9. FFcontrol Pin Current, V 1.4 V and V Maximum vs. Temperature CONTROL 22.5 20.5 18.5 16.5 14.5 ...
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T , JUNCTION TEMPERATURE (°C) J Figure 15. DRV Source Resistance vs. Temperature −50 −30 − ...
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T , JUNCTION TEMPERATURE (°C) J Figure 21. Error Amplifier Transconductance Gain vs. Temperature 0.5 0.4 0.3 0.2 0.1 0 −50 −30 − JUNCTION ...
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T , JUNCTION TEMPERATURE (°C) J Figure 27. “Overstress” Protection Leading Edge Blanking vs. Temperature 850 800 750 700 650 −50 −30 − ...
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T , JUNCTION TEMPERATURE (°C) J Figure 33. CS/ZCD Pin Bias Current @ V = 0.75 V vs. Temperature 960 920 880 840 ...
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T , JUNCTION TEMPERATURE (°C) J Figure 39. Maximum On Time @ V 1.4 V vs. Temperature 100 −50 ...
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T , JUNCTION TEMPERATURE (°C) J Figure 45. Ratio (Fast OVP Threshold, V Rising) over V vs. Temperature REF 290 270 250 230 210 190 ...
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T , JUNCTION TEMPERATURE (°C) J Figure 51. Brown−Out Threshold, V Falling vs. Temperature −50 −30 − JUNCTION TEMPERATURE ...
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... This circuit limits possible deviations from the regulation level as follows: − The NCP1611 linearly decays the power delivery to zero when the output voltage exceeds 105% of its desired level (soft OVP). If this soft OVP is too ...
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... The circuit resumes operation once the temperature drops below approximately 100°C (50°C hysteresis). • Output Stage Totem Pole: the NCP1611 incorporates a −0 +0.8 A gate driver to efficiently drive most TO220 or TO247 power MOSFETs. NCP1611 Operation Modes As mentioned, the NCP1611 PFC controller implements a Current Controlled Frequency Fold− ...
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Top: CrM operation when the current information exceeds the preset level during the demagnetization phase Middle: the circuit re−starts at the next valley if the sum (ramp + current information) exceeds the preset level during the dead−time, while the drain−source ...
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V pin BO pin SENSE V pin Vcontrol pin CONTROL FFcontrol pin FFcontrol pin R FF Figure 61. Generation of the Current Information Skip Mode As illustrated in Figure 61, the circuit also skips cycles near the line zero crossing ...
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... Also, this method avoids that the system stalls between valleys. Instead, the circuit acts so that the PFC Figure 63. Clean Transition Without Hesitation Between Valleys NCP1611 On−time Modulation Let’s analyze the ac line current absorbed by the PFC boost stage. The initial inductor current at the beginning of each switching cycle is always zero ...
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... 2TL Figure 64. PFC Boost Converter (left) and Inductor Current in DCM (right) The NCP1611 operates in voltage mode. As portrayed by Figure 8, the MOSFET on−time t is controlled by the signal 1 V generated by the regulation block and an internal ramp ton as follows ramp ...
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Hence, the maximum power that can be delivered by the PFC stage is in,rms P + in,avg max low line 2 V in,rms P + in,avg max high line Figure ...
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... CC The circuit also detects overshoot and immediately reduces the power delivery when the output voltage exceeds 105% of its desired level. The NCP1611 does not abruptly interrupt the switching. Instead, the signal V controls the on−time is gradually decreased by grounding − clamped not to exceed 4 the same V voltage drop ...
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... The CS/ZCD external components must be selected to avoid false fault detection. 3 the recommended minimum impedance to be applied to the CS/ZCD pin when considering the NCP1611 parameters tolerance over the −40°C to 125°C temperature range. Practically, R application of Figure 68. ...
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V avoids a line current CONTROL discontinuity and limits the risk of false triggering. Pin2 is also used to sense the line for feed−forward. A similar method is used: − The V pin voltage is compared to ...
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... NCP1611BDR2G †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. smoke nor big noise. The NCP1611 integrates functions that ease meet this requirement. Among them, we can list: • ...
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... C 1.35 1.75 0.053 0.069 D 0.33 0.51 0.013 0.020 G 1.27 BSC 0.050 BSC H 0.10 0.25 0.004 0.010 J 0.19 0.25 0.007 0.010 J K 0.40 1.27 0.016 0.050 0.25 0.50 0.010 0.020 S 5.80 6.20 0.228 0.244 mm inches ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative NCP1611/D _ ...