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Enpirion

®

 Power Evaluation Board User Guide 

EP53A8xQI PowerSoC 

 

Figure 1. Evaluation Board Layout 

 
 

Output Voltage Select 

 

The  EP53A8xQI utilizes a 3 pin output voltage select scheme.  The output 
voltage is programmed by setting the VSx jumpers to either logic “1” or logic “0” 
as described in the Quick Start section.  Tables 1 and 2 show the truth table for 
V

OUT

  selection.  There are seven preset output voltage levels for the EP53A8LQI, 

and eight preset levels for the EP53A8HQI. 
 

Table 1. EP53A8LQI  Output Voltage  Select Table 

 

VS2 

VS1 

VS0 

VOUT 

1.50 

1.45 

1.20 

1.15 

1.10 

1.05 

0.8 

EXT 

 

 

Page 3 of 7 

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Summary of Contents for EP53A8LQI

Page 1: ...ering evaluation capabilities This includes the base configuration of a 0603 input capacitor and a 0805 output capacitor Pads are available to add up to one additional input capacitor and one addition...

Page 2: ...ged If the input voltage polarity is wrong diode D1 will conduct and draw excessive input current STEP 3 Set the output voltage select pins for the desired output voltage Refer to Tables 1 and 2 to de...

Page 3: ...VSx jumpers to either logic 1 or logic 0 as described in the Quick Start section Tables 1 and 2 show the truth table for VOUT selection There are seven preset output voltage levels for the EP53A8LQI a...

Page 4: ...ters or accurate shunt resistors This is especially important when measuring efficiency 3 Use a low loop inductance probe tip as shown in Figure 2 and through hole test point pair TP2 to measure the o...

Page 5: ...an output voltage other than one of the pre set voltages available on the VID See Figure 3 for the basic circuit VIN VSense VS0 VS2 EP53A8L 10 F 0805 4 7uF 0603 VOUT VOUT AGND ENABLE Ra Rb VFB VS1 PG...

Page 6: ...matic R3 100 0402 C10 10u FB1 742792012 TP2 1 2 TP1 1 2 Schematic 03400 PCB 03401 J1 ASP12192002 1 2 3 5 6 7 9 10 11 13 14 15 17 18 19 Vin Vout Vin U1 EP53A8xQI NC SW 1 1 PGND 2 PGND 3 Vf b 4 Vsense 5...

Page 7: ...re the property of their respective holders as described at www altera com common legal html Altera warrantsperformance of itssemiconductor products to current specifications in accordance with Altera...

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