NCP5214EVB ON Semiconductor, NCP5214EVB Datasheet
NCP5214EVB
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NCP5214EVB Summary of contents
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NCP5214 2−in−1 Notebook DDR Power Controller The NCP5214 2−in−1 Notebook DDR Power Controller is specifically designed as a total power solution for notebook DDR memory system. This IC combines the efficiency of a PWM controller for the VDDQ supply with ...
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VDDQEN VDDQEN VTTEN VTTEN FPWM FPWM SS CSS 5VCC PWRGD PGOOD VTT 0.9 V, 1.5 A VTT VTT VTT VTT COUT2 Ceramic FBVTT VTTGND 5VCC VCCA VREF VTTREF 0 DDQREF AGND NCP5214 OCDDQ BOOST ...
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VREF VOLTAGE & CURRENT VDDQEN REFERENCE VTTEN FPWM VCCA VOCDDQGD VCCA + − VREF VOCDDQ + − VREF VCCA SS 5VCC PGOOD OSC PGND VOCDDQ Adaptive Ramp + − SC2PWR VTTI Deadband Control + − VTTREF SC2GND + VTTREF ...
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PIN FUNCTION DESCRIPTION Pin Symbol 1 VDDQEN VDDQ regulator enable input. High to enable. 2 VTTEN VTT regulator enable input. High to enable. 3 FPWM Forced PWM enable input. Low to enable forced PWM mode and disable power−saving mode. 4 ...
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MAXIMUM RATINGS Rating Power Supply Voltage (Pin 11, 20) to AGND (Pin 9) High−Side Gate Drive Supply: BOOST (Pin 17) to SWDDQ (Pin 19) High−Side FET Gate Drive Voltage: TGDDQ (Pin 18) to SWDDQ (Pin 19) Input/Output Pins to AGND ...
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ELECTRICAL CHARACTERISTICS = 150 RL1 = 5.6 kW 4.3 kW 3.3 kW, RZ1 = 10 kW, RZ2 = 130 W, CP1 = 100 pF, CZ1 = 2.2 ...
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ELECTRICAL CHARACTERISTICS L = 1.8 mH 150 RL1 = 5.6 kW 4.3 kW 3.3 kW, RZ1 = 10 kW, RZ2 = 130 W, CP1 = ...
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ELECTRICAL CHARACTERISTICS (continued 1.8 mH 150 RL1 = 5.6 kW 4.3 kW 3.3 kW, RZ1 = 10 kW, RZ2 = 130 W, ...
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TYPICAL OPERATING CHARACTERISTICS 4.0 3.8 3.6 3.4 3.2 3.0 −40 − AMBIENT TEMPERATURE (°C) A Figure 3. VCCA Quiescent Current in S0 vs. Ambient Temperature −40 − ...
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TYPICAL OPERATING CHARACTERISTICS 1.820 1.815 1.810 1.805 I = 100 mA VDDQ 1.800 1.795 VDDQ 1.790 1.785 1.780 INPUT VOLTAGE (V) IN Figure 9. VDDQ Output Voltage vs. Input Voltage ...
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TYPICAL OPERATING CHARACTERISTICS 100 90 80 with power−saving without power−saving DDQ Freq = 400 kHz max T = 25° 0.1 1 VDDQ OUTPUT CURRENT (A) VDDQ Figure 15. VDDQ Efficiency (DDR) vs. VDDQ ...
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TYPICAL OPERATING CHARACTERISTICS VTTEN VTT IVTTI VDDQEN = High; VTT Loaded with 4 GND Figure 21. VTT Start−Up Waveforms VDDQ VTT VTTR VTTEN IVDDQ = 50 mA, IVTT = 100 mA, IVTTR = 5 mA Figure 23. S0−S3−S0 ...
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TYPICAL OPERATING CHARACTERISTICS VDDQ VTT VTTR IVTT IVDDQ = 8 A, IVTT = IVTTR = 15 mA Figure 27. VTT Source Current Transient VDDQ VTT VTTR VIN IVDDQ = 0 A, IVTT ...
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TYPICAL OPERATING CHARACTERISTICS VDDQ VTT VTTR IVTT IVDDQ = 8 A, VTT shorts to ground, IVTTR = 15 mA Figure 33. VTT Short Circuit to Ground and Recovery VDDQ, 1V/div VSWDDQ, 10V/div VIN, 20V/div Figure 35. VDDQ OCP by Short ...
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General The NCP5214 2−in−1 Notebook DDR Power Controller combines the efficiency of a PWM controller for the VDDQ supply, with the simplicity of using a linear regulator for the VTT termination voltage power supply. The VDDQ output can be adjusted ...
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VDDQ Regulator in Standby Mode (S3) During state S3, a power−saving mode is activated when the FPWM pin is pulled to VCCA. In power−saving mode, the switching frequency is reduced with the VDDQ output current and the low−side FET is ...
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Supply Voltage Undervoltage Monitor The IC continuously monitors VCCA and VIN through VCCA pin and OCDDQ pin respectively. VCCAGD is set HIGH if VCCA is higher than its preset threshold (derived from VREF with hysteresis). The IC will enter S5 ...
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VCCA VIN (VOCDDQ) VDDQEN VTTEN VDDQ Soft−start VDDQ VTT VTT Soft−start VTTREF PGOOD t hold Operating Mode S5 S0 PGOOD VCCA goes goes HIGH. above 4 enable the IC. INREGDDQ goes HIGH, VTT goes into VDDQEN goes HIGH, ...
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Input Capacitor Selection for VDDQ Buck Regulator The input capacitor is important for proper regulation operation of the buck regulator. It minimizes the input voltage ripple and current ripple from the power source by providing a local loop for switching ...
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Then the required output capacitor capacitance can be estimated by STEP(peak OUT w (V overshoot ) V OUT ) 2 −V 2 OUT (V IN −V OUT ) I STEP(peak LOAD ) 2L where ...
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The maximum drain−to−source voltage rating of the MOSFETs used in buck converter should be at least 1.2 times of the maximum input voltage. Generally, V should be sufficient for both high−side MOSFET and low−side MOSFET of the buck converter for ...
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OSC VIN ADAPTIVE RAMP MODULATOR Figure 39. Voltage Mode Buck Converter with Modulator, LC filter and Type III Compensation Modulator DC Gain can be calculated by: G MOD(DC log V RAMP LC filter double pole and ESR zero ...
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Close loop system bandwidth can be calculated by RAMP 2p Since the ramp amplitude of the PWM modulator has a voltage feedforward function, the ramp amplitude is a function of V ...
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VDDQ is finished. The C will continue to charge up until ss it reaches about 2 3.0 V. The soft−start time t can be programmed by the ss soft−start capacitor according to the following equation: 0 ...
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Thus, inductor with 1.8 mH inductance maximum rated DC current and 3.5 mW DCR is chosen. c. Calculate ESR and capacitance of output filter capacitor: First, the ESR required to achieve the desired output ripple voltage is considered. ...
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Thus, standard value of 7 selected for R If the first zero break frequency is placed at half the LC filter’s double pole, the value of C can be calculated by: 2 1.8 mH 440 ...
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PCB Layout Guidelines Cautious PCB layout design is very critical to ensure high performance and stable operation of the DDR power controller. The following items must be considered when preparing PCB layout: 1. All high−current traces must be kept as ...
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... VCCA 100 k 100 k 100 k 100 k VDDQEN 2 VTTEN JP1 JP2 JP3 3 FPWM 1 Semiconductor TP1 15 PGOOD PGOOD TP4 14 VREF VTTREF 0.9 V/15 mA C18 TP10 1 mF 1.25 V/ AGND VTT TP2 VTT 8 0.9 V/±1.5 A FBVTT C2 C17 1.25 V/±1 TP3 5 VTTGND VTTGND VCCA DDQREF (option AGND Figure 41 ...
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PCB Layout of Evaluation Board Figure 42. Silkscreen of Evaluation Board PCB Figure 44. Middle Layer1 of Evaluation Board PCB Layout Figure 46. Bottom Layer of Evaluation Board NCP5214 Figure 43. Top Layer of Evaluation Board PCB Layout Figure 45. ...
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... Resistor, 130 W 1% 0603 Panasonic ERJ3EKF1300V Resistor, 4 0603 Panasonic ERJ3EKF4301V Resistor, 3. 0603 Panasonic ERJ3EKF3441V Resistor, 3 0603 Panasonic ERJ3GEYJ3R3V Header, single pin ON Semiconductor NCP5214 Shunt, 100 mil jumper http://onsemi.com 30 Mfg. & P/N Remark C3 & C20 are optional C5 is optional Panasonic EEVFK1V330P ...
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... SOLDERING FOOTPRINT* 5.770 0.227 A B 3.130 NOTE 3 0.123 0.500 20X 0.020 *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. http://onsemi.com 31 MILLIMETERS MIN MAX 0.80 1.00 0.00 0.05 0.20 REF ...
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... Fax: 480−829−7709 or 800−344−3867 Toll Free USA/Canada Email: orderlit@onsemi.com NCP5214 N. American Technical Support: 800−282−9855 Toll Free USA/Canada Japan: ON Semiconductor, Japan Customer Focus Center 2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051 Phone: 81−3−5773−3850 http://onsemi.com 32 ON Semiconductor Website: http://onsemi ...