en5322 Enpirion, en5322 Datasheet
en5322
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en5322 Summary of contents
Page 1
... Created on 3/12/2008 2:55:00 PM General Description The EN5322 is a high efficiency synchronous buck converter with integrated inductor, PWM controller, MOSFETS, providing the smallest possible solution size. The 4 MHz operation allows for the use of tiny MLCC capacitors. It also enables a very wide control loop bandwidth ...
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... MIN MAX 6 2.7 V +85 °C +150 °C +260 °C MIN TYP MAX 155 MIN MAX 2.4 5.5 0 DROPOUT 0 2 -45 +125 MIN TYP MAX 2.4 5.5 2.2 0.15 -2.0 +2.0 -2.0 +2.0 -2.0 +2.0 -2.0 +2.0 -2.0 +2.0 -2.0 +2.0 -2.0 +2.0 0.588 0.600 0.612 www.enpirion.com EN5322QI UNITS °C °C °C/W °C/W UNITS °C UNITS ...
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... A OUT LOAD is greater than ( OUT DROPOUT 3 MIN TYP MAX +3.0 -3.0 +3.0 -3.0 +3.0 -3.0 +3.0 -3.0 +3.0 -3.0 +3.0 -3.0 +3.0 -3.5 0.582 0.600 0.618 0.975 1.5 2.025 0.975 1.5 2.025 +/-40 0.0 0.4 1 111 102 92 90 0.15 0.4 500 17 800 15 2.1 3.0 160 60 200 300 www.enpirion.com EN5322QI UNITS % V V/ms V/ µA µ mΩ mΩ mΩ MHz mV P-P mV P-P ...
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... GND. This pin must not be left floating. 19-20 PVIN Input Power Supply. Connect to input supply. Decouple with input capacitor(s) to PGND. ©Enpirion 2008 all rights reserved, E&OE FUNCTION or pulled down to GND; these pins must not be left floating EN5322QI www.enpirion.com ...
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... Generator AVIN Figure 3. Functional Block Diagram. ©Enpirion 2008 all rights reserved, E&OE POK POK P-Drive Logic N-Drive Compensation Network (-) Error Amp (+) DAC VREF BIAS AGND 5 EN5322QI PVIN NC (SW) VOUT PGND VSENSE Switch VFB Voltage Select Package Boundary VS0 VS1 VS2 www.enpirion.com ...
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... Load Current (A) Top to Bottom 3.3 V, 2.5 V, 1.8 V, 1.5 V, 1.2 V, OUT 0.8 V ©Enpirion 2008 all rights reserved, E&OE = 1.2 V and T = 25°C, unless otherwise noted. OUT A 1.00 1.25 1.50 1.75 2.00 Top to Bottom Efficiency vs. Load Current (Vin = 3.3V 0.00 0.25 0.50 0.75 1.00 1.25 Load Current (A) = 2.5 V, 1.8 V, 1.5 V, 1.2 V, 0.8 V OUT www.enpirion.com EN5322QI 1.50 1.75 2.00 ...
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... OUT 7 Quiescent Current (Switching) vs. Input Voltage Input Voltage (V) Load Regulation (Vin = 5 V) 3.304 3.300 3.296 3.292 3.288 3.284 0 0.4 0.8 1.2 Load Current (A) Output Ripple Load (CH2 µ 3 1 OUT OUT www.enpirion.com EN5322QI OUT ...
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... A Load Step, slew rate ≥ 10A/uS) CH1: V CH4: I OUT, LOAD V Scaling with VID Codes at V OUT (V = 1.2 V – 2 – OUT OUT CH1: VS2 CH2: V CH3: POK , OUT CH2: V CH3: POK , OUT, , www.enpirion.com EN5322QI = 3 1.2 V) OUT CH4: I INDUCTOR ...
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... Packaged 1.1 mm QFN, the EN5322 provides a high degree of flexibility in circuit design while maintaining a very small footprint. High switching frequency allows for the use of very small MLCC input and output filter capacitors. The converter uses voltage mode control to provide high noise immunity, low output © ...
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... To improve transient performance or reduce output voltage ripple with dynamic loads you have the supplementary capacitance to the output. The EN5322 is stable with µF of output capacitance without compensation adjustment. Additional output capacitance above 60 µF can be accommodated with adjustment depending on the application. The high switching frequency allows for a wide control loop bandwidth ...
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... Enable can be separated from PVIN if the application requires it) Application Information Setting the Output Voltage To provide the highest degree of flexibility in choosing output voltage, the EN5322QI uses a 3 pin VID (Voltage ID) output voltage select arrangement. This allows the designer to choose one of seven preset voltages use an external voltage divider ...
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... Proper layout and placement of external components is critical to optimal functioning of the converter and for minimizing radiated and conducted noise. Follow demonstrated on the EN5322 customer eval boards: 1. Input and output capacitors should be temperature row of vias connecting these capacitors’ 3. Avoid adding a test pin or test pad for ...
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... Add a 2.2 µF bypass capacitor to the GND plane at the star connection. Some applications may benefit from an SMT ferrite bead between the input capacitor of each converter and the star connection point. ©Enpirion 2008 all rights reserved, E&OE using a star 13 EN5322QI www.enpirion.com ...
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... PCB through a SMT soldering process. All other exposed metal is to remain free of any interconnection to the PCB. Figure 6 shows the recommended PCB metal layout for the EN5322 package. A GND pad with a solder mask "bridge" to separate into two pads and 24 signal pads are to be used to match the metal on the package ...
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... March 2008 Package and Mechanical ©Enpirion 2008 all rights reserved, E&OE 15 EN5322QI www.enpirion.com ...
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... A dc-dc with integrated inductor 7 1.85 mm QFN package External resistor divider V programming OUT 6 A dc-dc with integrated inductor 1.85 mm QFN package 3-Pin VID V programming; Parallel capable OUT 6 A dc-dc with integrated inductor 1.85 mm QFN package External resistor divider V programming; Parallel capable OUT 16 EN5322QI www.enpirion.com ...