Enpirion Power Evaluation Board EN6310QI 5.5Vin 1A Buck PowerSoC Evaluation Board User Guide Description This is the EN6310QI User Guide. The parts count over competing solutions. The EN6310QI features an integrated inductor, evaluation board is optimized for engineering power MOSFETS, a controller, a bulk of the ease of testing through programming options, compensation network, and protection circuitry clip leads, test points and other supporting against system faults. This level of integration external components. delivers a substantial reduction in footprint and Evaluation Board Over View Figure 1. EN6310QI Evaluation Board Illustration www.altera.com/enpirion 10621 January 12, 2015 Rev AEN6310QI Evaluation Board User Guide Instructions The numbers in the instructions below correspond 6) POK (TP10) This is the open drain POK to the numbers in Figure 1. By following the number flag, which is pulled up to VIN by R1 when sequence below, the device can be turned on by VOUT is over 90% of regulation. step 5. 7) SS (TP11) The soft start capacitor is by defaulted 10nF and can be between 0.47nF 1) ENABLE (J1) Connecting a jumper to the to 10nF. See Datasheet for details. upper two pins of J1 enables the device. 8) External Compensation (R4 = Ra), C10 = Connecting a jumper on the lower two pins Ca, R5= Rca) The on board values are of J1 disables the device. Leave J1 open designed to work with a variety of input and and use an external signal on TP8 to toggle output voltage ranges. For optimization, the enable on (>1.8V) and off (<0.4V). follow the table below: 2) Output Voltage Settings (J4) With a jumper placed as shown, output voltage is CIN = 4.7F/0603 + 100pF set to 1.2V. The jumper may be switched to CAVIN = 20 + 0.47F change the output voltage from left to right COUT = 47F/0805 or 2x22F/0603 (3.3V, 1.8V, 1.2V and 1.0V). The output R = 200k, R = 1k, R = 0.6R /(V 0.6) voltage may also be adjusted by changing A CA B A OUT R (R4) as shown in Figure 2. B V V Ca V V Ca IN OUT IN OUT (V) (V) (pF) (V) (V) (pF) V OUT 5.5 15 5.5 27 VOUT 5 3.3 15 5 27 4.5 15 4.5 33 1.2 C OUT R A C A 5.5 15 3.3 33 5 15 2.7 39 R CA 2.5 4.5 15 5.5 39 VFB 3.3 15 5 39 V = 0.6V FB 5.5 15 4.5 1 39 PGND V x FB R A 5 15 3.3 47 R = B V - OUT V FB EN6310QI 4.5 15 2.7 47 1.8 3.3 22 5.5 39 Figure 2. External Compensation 2.7 22 5 39 5.5 22 4.5 0.6 47 3) VIN (TP18) Connect the positive terminal of a 2.7V to 5.5V power supply to TP18. Do 5 22 3.3 56 not turn the power supply on until everything 4.5 1.5 22 2.7 56 is connected correctly. 3.3 27 4) Ground (TP20 and TP21) Connect the 2.7 33 power supplys negative terminal ground to TP20 and the load ground to TP21. 5) VOUT (TP19) Connect the load to TP19. 9) Input Protection The EN6310QI If the instructions were followed up to this evaluation board comes with some input point, the power supply may be turned on. If polarity protection. Be sure to follow input output voltage is not present after turning on voltage specifications based on the the power supply, check the position of the Datasheet. jumper on J1. www.altera.com/enpirion, Page 2 10621 January 12, 2015 Rev A