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Enpirion EN5339QI, User Manual

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Enpirion EN5339QI User Manual Download Page 3

 

February 2012   R1.0 

 

Page 3 of 8 

 

Enpirion 2012 all rights reserved, E&OE 

 

www.enpirion.com 

 
 
 
 

 

 

Figure 1. Evaluation Board top view. 

 

Output Voltage Select 

 
The EN5339QI is programmed via an external resistor divider.  Figure 2 shows the device application 
circuit.  

EN5339

VOUT

PVIN

AGND

V

IN

POK

ENABLE

AVIN

PGND

C

IN

C

OUT

1 uF

V

OUT

PGND

R

POK

Ra

Rb

VFB

POK

Ca

 

Figure 2. EN5339QI application Circuit. 

 

J2 VOUT Jumpers 

C9 = Ca 

ENABLE 

Output Capacitors  

VIN (+)  

GND (-)  

GND (-)  

VOUT (+)  

Input Capacitor  

Summary of Contents for EN5339QI

Page 1: ...erSoC with integrated inductor Pre tinned pads are available for a wide range of input and output capacitor configurations There are four positions available for the output capacitors The first position closest to the IC can accommodate a 1206 or 0805 case size while the other three positions can accommodate either 0805 or 0603 capacitor case sizes The base output capacitor configuration is 3 x 22...

Page 2: ...s the VOUT jumper options CAUTION the VOUT jumper settings can only be changed when the device is disabled Failure to follow this guideline may result in damage to the part STEP 3 Connect the Power Supply to the input power connectors VIN and GND DO NOT turn the power supply on yet CAUTION be mindful of the polarity Reversing polarity will result in damage to the part STEP 4 Connect an electronic ...

Page 3: ...Voltage Select The EN5339QI is programmed via an external resistor divider Figure 2 shows the device application circuit EN5339 VOUT PVIN AGND VIN POK ENABLE AVIN PGND CIN COUT 1 uF VOUT PGND RPOK Ra Rb VFB POK Ca Figure 2 EN5339QI application Circuit J2 VOUT Jumpers C9 Ca ENABLE Output Capacitors VIN GND GND VOUT Input Capacitor ...

Page 4: ...tage settings other than those configured on this Evaluation Board replace one or more of the resistors R6 R5 R3 or R2 per the formula below and set the jumper J2 accordingly If the desired VOUT is greater than 1 8V Capacitor Ca C9 will need to be replaced with the value shown in Table 1 for the VOUT desired REF OUT REF V V V Ra Rb Since Ra 348kΩ and VREF 0 600V the equation becomes Ω k V Rb OUT 6...

Page 5: ...te shunt resistors This is especially important when measuring efficiency Use a balanced impedance probe tip across COUT to measure VOUT Ripple to avoid noise coupling into the probe ground lead The recommended probe configuration is shown in Figure 3 Figure 3 Recommended probe configuration Typical Performance Characteristics 0 10 20 30 40 50 60 70 80 90 100 0 0 5 1 1 5 2 2 5 3 EFFICIENCY OUTPUT ...

Page 6: ...F 0805 COUT 3 x 22µF 0805 LOAD VOUT AC Coupled Load Transient from 0 to 3A CONDITIONS VIN 3 3V VOUT 1 8V CIN 1 X 22µF 0805 COUT 3 x 22µF 0805 LOAD VOUT AC Coupled Load Transient from 0 to 1A CONDITIONS VIN 5V VOUT 2 5V CIN 1 X 22µF 0805 COUT 3 x 22µF 0805 LOAD VOUT AC Coupled Load Transient from 0 to 3A CONDITIONS VIN 5V VOUT 2 5V CIN 1 X 22µF 0805 COUT 3 x 22µF 0805 LOAD Output Ripple at 20MHz ...

Page 7: ...February 2012 R1 0 Page 7 of 8 Enpirion 2012 all rights reserved E OE www enpirion com Evaluation Board Schematic Figure 4 Engineering Evaluation board schematic ...

Page 8: ...sign and or specifications at any time without notice Information furnished by Enpirion is believed to be accurate and reliable Enpirion assumes no responsibility for its use or for infringement of patents or other third party rights which may result from its use Enpirion products are not authorized for use in nuclear control systems as critical components in life support systems or equipment used...

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