NCP3127AGEVB ON Semiconductor, NCP3127AGEVB Datasheet
NCP3127AGEVB
Specifications of NCP3127AGEVB
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NCP3127AGEVB Summary of contents
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NCP3127 2 A Synchronous PWM Switching Converter The NCP3127 is a flexible synchronous PWM Switching Buck Regulator. The NCP3127 is capable of producing output voltages as low as 0.8 V. The NCP3127 also incorporates voltage mode control. Switching frequency is ...
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VREF + 0.8 V − FB COMP Clock Ramp OSC OSC AGND Table 1. PIN DESCRIPTION Pin Pin Name 1 PGND The PGND pin is the high current ground pin for the low−side MOSFET and the ...
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Table 2. MAXIMUM RATINGS Rating Main Supply Voltage Input Bootstrap Supply Voltage vs GND Bootstrap Supply Voltage vs Ground (spikes ≤ 50 ns) Bootstrap Pin Voltage High Side Switch Max DC Current V Pin Voltage SW Switch ...
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Table 3. ELECTRICAL CHARACTERISTICS min/max values unless otherwise noted.) Characteristic Input Voltage Range Boost Voltage Range SUPPLY CURRENT Quiescent Supply Current Shutdown Supply Current Boost Quiescent Current UNDER VOLTAGE LOCKOUT V UVLO Threshold IN V UVLO Hysteresis IN SWITCHING REGULATOR ...
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3.5 3 2.5 2.0 −60 −40 − JUNCTION TEMPERATURE (°C) J Figure 4. I vs. Temperature ...
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Figure 10. Duty Cycle Maximum vs. Temperature 100 5.0 V Output 1 0.8 V ...
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General The NCP3127 is a PWM synchronous buck regulator intended to supply load for DC−DC conversion from 5 V and 12 V buses. The NCP3127 is a regulator that has integrated high−side and low−side NMOSFETs ...
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OTA. Figure typical soft−start sequence. The sequence begins once V their UVLO thresholds and OCP programming is complete. The current sourced out of the ...
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... ON Semiconductor has a Microsoft Excel® based design tool available online under the design tools section of the NCP3127 product page. The tool allows you to capture your design point and optimize the performance of your regulator based on your design criteria ...
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ESR of electrolytic capacitors. The ratio of ripple current to maximum output current is given in Equation Iout ...
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DCR ³ _DC RMS 2. 23. Inductor RMS current RMS DCR = Inductor DC resistance LP = Inductor DC power dissipation CU_DC The core losses and ...
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In a typical converter design, the ESR of the output capacitor bank dominates the transient response. Please note that DV and DV are out of phase with each OUT−DIS OUT−ESR other, and the larger of these two voltages will determine ...
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When calculating the rise time and fall time of the high side MOSFET it is important to know the charge characteristic shown in Figure 22. Vth Figure 22. MOSFET Switching Characteristics RISE I ...
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The formula for calculating the junction temperature with the package in free air is Power dissipation of the Thermal resistance junction to ...
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... The values can be adjusted in real time using the compensation tool comp calc, available for download at ON Semiconductor’s website. The value of the feed through resistor should always be at least 2X the value of R noise. Using the 2X assumption, R ...
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239 31 Feed through capacitor ...
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cross 2.119 kHz 57 Compensation capacitance Output capacitor ESR ESR C = Output capacitance OUT f = ...
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Assuming an output capacitance of 470 mF in parallel with 22 mF with a crossover frequency of 35 kHz, the compensation values for common output voltages can be calculated as shown in Table 6: Table 6. COMPENSATION VALUES V V ...
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ICinrush_RMS CIN ESR e 5 CIN ESR 0.316 t DELAY_TOTAL 102 0.1 W 13.64 ms 0.1W 330 0.1 W 330 mF 0.316 13.64 ...
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Output Voltage Output Current tss Figure 28. Resistive Load Current Alternatively, if the output has an under voltage lockout, turns defined voltage level, and draws a consistent current, then the RMS connected load current is ...
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VIN C1 10uF C2 NCP3127 C3 NI 470uF 4 AGND 16V 16V 16V 3 COMP PGND Vin RC 2.94k GND_IN COMP CP CC 820pF 68n 50V 50V Figure 31. Standard Application 2 ...
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Figure 33. Application Bottom Layout (TOP) Figure 34. Application Top Layout (TOP) http://onsemi.com 22 ...
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... *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. Microsoft Excel is a registered trademark of Microsoft Corporation. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein ...