NCP3101 ON Semiconductor, NCP3101 Datasheet
NCP3101
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NCP3101 Summary of contents
Page 1
... PWM buck converter designed to operate from a 4 13.2 V supply. The device is capable of producing an output voltage as low as 0.8 V. The NCP3101 can continuously output 6 A through MOSFET switches driven by an internally set 275 kHz oscillator. The 40-pin device provides an optimal level of integration to reduce size and cost of the power supply ...
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... Pin No Symbol 1-4 , 36-40 PWRPHS 5-12 PWRGND 13 14,15,19,20,23 AGND 16 17 COMP/DIS 18 21 TGOUT 22 CPHS 24 25 26-34 PWRVCC 35 NCP3101 - PWM OUT S CLOCK RAMP OSC FAULT OSC LATCH - Figure 2. Detailed Block Diagram Power phase node. Drain of the low side power MOSFET and source of the high side MOSFET. ...
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... Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. NOTE: These devices have limited built-in ESD protection. The devices should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the device. 1. 60-180 seconds minimum above 237°C NCP3101 Symbol V CC PWRVCC BST ...
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... Guaranteed by Design V = 100 100 0 Undershot V OUT Recovery Time Sourced from BG Pin before Soft-Start http://onsemi.com 4 < 125°C for NCP3101B, 4.5 V < Min Typ Max 4.5 13.2 4.5 30 2.3 1.8 10.3 5.6 600 3.6 4.0 0.4 0.792 0.8 0.808 0.788 0.8 0.812 250 ...
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... T , JUNCTION TEMPERATURE (°C) J Figure 5. Reference Voltage (V 15 14.5 14 13.5 13 12.5 12 11.5 11 10.5 10 -40 - JUNCTION TEMPERATURE (°C) J Figure 7. Soft-Start Sourcing Current vs. Temperature NCP3101 TYPICAL OPERATING CHARACTERISTICS 4 13 100 120 ) vs. SW 4.1 3.9 3.8 3.7 3.6 3 100 120 ) vs. Temperature ref 40 35 ...
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... In steady state DC operation, the duty cycle will stabilize at an operating point defined by the ratio of the input to the output voltage. The NCP3101 can achieve an 80% duty cycle. There is a built in off-time which ensures that the bootstrap supply is charged every cycle. The NCP3101, which is capable of a 100 nsec pulse width (minimum), can allow ...
Page 7
... UVLO Undervoltage Lockout (UVLO) is provided to ensure that unexpected behavior does not occur when V support the internal rails and power the converter. For the NCP3101, the UVLO is set to ensure that the IC will startup when V reaches 4.0 V and shutdown when V CC below 3.6 V. This permits smooth operation from a varying 5 ...
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... Otherwise, capacitor failure could occur. Calculating Input Startup current To calculate the input startup current, the following equation can be used: C OUT + I inrush NCP3101 where I BST total output capacitance, V and t TG current during maximum load, then the input fuse should be PHASE rated accordingly, if one is used. ...
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... COUT resistance of the output capacitors. Table 1 shows values of voltage drop and recovery time of the NCP3101 demo board with the configuration shown in Figure 19. The transient response was measured for the load current step from (50% to 100% load). Input capacitors are 2x47 mF ceramic and 1x270 mF OS-CON, output capacitors are 2x100 mF ceramic and OS-CON as mentioned in Table 1 ...
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... They should be placed close to the 1.280 NCP3101. The feedback trace is recommended to be kept as 0.753 far from the inductor and noisy power traces as possible. The 0.512 resistor divider and feedback acceleration circuit (R2, R3, 0.514 R6, C13) is recommended to be placed near to input FB (Pin 16, NCP3101) ...
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... NCP3101 RLO8 PWRVCC BG PWRPHS Figure 19. Schematic Diagram of NCP3101 Evaluation Board http://onsemi.com 11 NC COMP FB AGND AGND VCC PWRGND PWRGND PWRGND ...
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... Schematic diagram of the NCP3101 demoboard is shown in Figure 19 and the actual PCB layout is shown in Figure 20. The corresponding bill of material is summarized in Table 2. Parameters of the board were tested with Input voltage V to 13.2 V and with various output loads between 0 A and 6 A. The board includes a few components used for transient measurements ...
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... Capac. Ceram 2238 581 15641 Capac. Ceram 12067A471JAT1A Capac. Ceram 12067A471JAT1A Capac. Ceram 12067C222KAT2A Capac. Ceram 12065C472KAT2A Diode BAT51T1G Diode MBRS140T3G Coil 74457068 MOSFET NTD4810NH I.C. NCP3101MNTXG http://onsemi.com 13 Footprint Quantity Manufacturer 1206 1 MULTICOMP 1206 1 MULTICOMP 1206 1 MULTICOMP 1206 1 WELWYN 1206 1 ...
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... NCP3101 Figure 20. PCB Layout Evaluation Board (55mm x 90mm) http://onsemi.com 14 ...
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... Measured Performance of NCP3101 Demoboard is Shown in Figures 21 Through 24. 10.5 9.5 8 0°C 7.5 J www.datasheet4u.com 6.5 5.5 T 4.5 3.5 2 RESISTANCE (kW) ocp Figure 21. Overcurrent Protection Figure 23. Transient Response ( 3 Step) Output out out Capacitors: 2x MLCC 100 mF and 820 mF OS-CON NCP3101 100 70° 25° ...
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... Figure 25. Temperature Conditions (V ORDERING INFORMATION Device NCP3101MNTXG NCP3101BMNTXG †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. NCP3101 = 13 3 Steady State, No Additional Cooling, in out out Ambient Temperature 255C ...
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... SIDE VIEW NOTE 4 L 40X e/2 BOTTOM VIEW NCP3101 PACKAGE DIMENSIONS QFN40 6x6, 0.5P CASE 485AK-01 ISSUE NOTES: 1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994. 2. CONTROLLING DIMENSIONS: MILLIMETERS. 3. DIMENSION b APPLIES TO PLATED TERMINAL AND IS MEASURED BETWEEN 0.15 AND 0.30mm FROM TERMINAL 4 ...
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... N. American Technical Support: 800-282-9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center Phone: 81-3-5773-3850 http://onsemi.com 18 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative NCP3101/D ...