NCP5318FTR2G ON Semiconductor, NCP5318FTR2G Datasheet
NCP5318FTR2G
Specifications of NCP5318FTR2G
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NCP5318FTR2G Summary of contents
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... PWRLS V FFB SS PWRGD DRVON ORDERING INFORMATION Device Package NCP5318FTR2 LQFP−32 NCP5318FTR2G LQFP−32 (Pb−Free) †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specification Brochure, BRD8011/D. 1 MARKING DIAGRAM NCP5318 AWLYYWWG ...
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RVCC 10 1. VID5 VID5 VCC 31 VID0 VID0 32 VID1 VID1 1 VID2 VID2 2 VID3 VID3 3 VID4 VID4 29 ENABLE ENABLE 7 VCC_PWRGD PWRGD 9 SGND RS 15K 4 PWRLS NCP5318FTR2 RP ...
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... Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability second maximum above 183°C. Rating NCP5318FTR2 NCP5318FTR2G NCP5318FTR2 NCP5318FTR2G http://onsemi.com 3 Value Unit 150 °C 230 peak ° ...
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MAXIMUM RATINGS Pin Number Pin Symbol 1−3, 30−32 V −V ID0 ID5 4 PWRLS 5 V FFB PWRGD 8 DRVON 9 SGND 10 V DRP COMP 13 CS4N 14 CS4P 15 CS3N 16 ...
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ELECTRICAL CHARACTERISTICS C = 0.1 mF 0.1 mF 95.3 kW, V(I SS VCC ROSC VOLTAGE IDENTIFICATION (VID) Voltage Identification Bits (Connect V to COMP, measure COMP ID4 ID3 ID2 0 1 ...
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ELECTRICAL CHARACTERISTICS C = 0.1 mF 0.1 mF 95.3 kW, V(I SS VCC ROSC VOLTAGE IDENTIFICATION (VID) (continued) Voltage Identification Bits (Connect V to COMP, measure COMP ID4 ID3 ID2 1 ...
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ELECTRICAL CHARACTERISTICS (continued 0.1 mF 0.1 mF 95.3 kW, V(I SS VCC ROSC Characteristic VID Inputs SGND Bias Current SGND Voltage Compliance Range Power Good Upper Threshold Offset Lower Threshold Ratio Time to Assert ...
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ELECTRICAL CHARACTERISTICS (continued 0.1 mF 0.1 mF 95.3 kW, V(I SS VCC ROSC Characteristic MOSFET Driver Enable (DRVON) Source Current GATES High Voltage Low Voltage Rise Time GATE Fall Time GATE Oscillator Switching Frequency ...
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PIN DESCRIPTION Pin No. Pin Symbol Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á 1−3, V −V DAC VID Inputs ID0 ID5 30−32 Á Á Á Á Á Á Á Á ...
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VFB SS 6−BIT DAC VID4 VID4 VID3 VID3 DAC VID2 VID2 VID1 VID1 VID0 VID0 VID5 VID5 111111 REF SGND PWRLS RAMP4 ROSC ROSC RAMP3 RAMP2 RAMP1 CLK1 CLK2 CS4P CLK3 CLK4 OSCILLATOR − VFFB 0.62 V CURRENT SENSE CS1P ...
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TYPICAL PERFORMANCE CHARACTERISTICS 0.50 0.40 0.30 VID = 101101 0.20 VID = 111101 0.10 0.00 −0.10 −0.20 VID = 010101 −0.30 −0.40 −0. TEMPERATURE (°C) Figure 3. DAC Variation versus Temperature 245 240 235 230 225 ...
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TEMPERATURE (°C) Figure 9. V versus Temperature ROSC TEMPERATURE (°C) ...
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TYPICAL PERFORMANCE CHARACTERISTICS 3.41 3.40 3.39 3.38 3.37 3.36 3.35 3.34 3. TEMPERATURE (°C) Figure 13. CS Amp to I LIM Temperature 31.0 30.5 30.0 29.5 29.0 28.5 28.0 27.5 27.0 26.5 26.0 25.5 0 ...
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V CC Enable V Fault REF UVLO Fault Fault Reset Fault Latch Fault DRVON SS COMP V OUT I OUT PWRGD Figure 16. Operating Waveforms http://onsemi.com 14 ...
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Overview The NCP5318 is a multiphase, synchronous buck 2 controller using the Enhanced V topology which combines the fast transient response of the original V the load current sharing characteristic of peak current−mode control. The NCP5318 can be operated as ...
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The NCP5318 provides a differential input (CSxN and CSxP) that accepts inductor current information for each phase as shown in Figure 17. The triangular inductor current is measured across R and amplified before being summed S with the channel startup ...
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For the converter described above with 4 phases and 85% efficiency at 100 A full load, the Error Amplifier output changes by: 3.0 V 100 A DV COMP + 14.8 ...
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Inductive Current Sensing For lossless sensing, current can be measured across the inductor as shown in Figure 19. In the diagram the output inductance and R is the inherent inductor resistance compensate the current sense signal, ...
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Transient Response and Adaptive Voltage Positioning For applications with fast transient currents, the output filter is frequently sized larger than ripple currents require in order to reduce voltage excursions during load transients. In addition, adaptive voltage positioning can reduce peak−peak ...
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An internal timer in the NCP5318 prevents the PWRGD signal from being asserted for 2 ms (typically) from the time that VOUT goes into range. If VOUT goes out of range, PWRGD will be deasserted immediately (typically less than 2 ...
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Adjusting the Number of Phases The NCP5318 is designed with a selectable−phase architecture. Designers may choose any number of phases up to four. The phase delay is automatically adjusted to match the number of phases that will be used. This ...
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Output Inductor Selection The output inductor is a very critical component in the converter because it directly affects the choice of other components and affects both the steady−state and transient performance of the converter. When selecting an inductor, the ...
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The following equations will determine the maximum and minimum currents delivered by the input capacitors: I Lo,MAX I C,MAX + * I IN,AVG h I Lo,MIN I C,MIN + * I IN,AVG the maximum output inductor current: ...
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MAX dI/dt occurs in first few PWM cycles Vi 470 nH NB × − ESR /NB IN Current changes slowly in the input inductor so the ...
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I is the RMS value of the current in the control RMS,CNTL MOSFET: I RMS,CNTL + (D (I Lo,MAX Lo,MAX I Lo,MIN ) I is the maximum output inductor current: Lo,MAX I O,MAX ) ...
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As with any power design, proper laboratory testing should be performed to insure the design will dissipate the required power under worst case operating conditions. Variables considered during testing should include maximum ambient temperature, minimum airflow, maximum input voltage, maximum ...
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Adaptive Voltage Positioning Two resistors program the Adaptive Voltage Positioning (AVP): R and R . These components form a resistor FB DRP R CS1 L1 C CS1 CSx Lx C CSx CS1 L1 ...
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Resistor R is connected between the controller load, this resistor will conduct the very small internal bias current of the V R should be kept below avoid output voltage FB error due ...
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Current Sensing Current sensing is used to balance current between different phases, to limit the maximum phase current and to limit the maximum system current. Since the current information is a part of the control loop, better stability is ...
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Current Limit Setting When the output of the current sense amplifier (COx in the block diagram) exceeds the voltage on the I will latch off. For inductive sensing, the I should be set based on the inductor’s maximum resistance ...
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−T− DETAIL −Z− −AB− SEATING −AC− PLANE 0.10 (0.004) AC NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DATUM PLANE ...
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... Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada Fax: 303− ...