ep3001 evaluation board manual rev.01 1/4 description this manual aims to illustrate how to use the ep300 1 evaluation board (?ep3001 evb?). the ep3001 evb is a constant-frequency buck regulat or, using the ep3001, 1.5mhz, 600ma synchronous step-down converter. the ep3001 evb is available for input voltage range from 2.5v to 5.5v. the ep3001 evb is capable of delivering up to 600ma of output current at minimum input voltage of 3v, or even up to 800ma under certain specific c ondition. this manual includes quick start for using the ep30 01 evb, demonstration circuit, pcb layout and bill of material for the ep3001 evb. quick start the ep3001 evb is easy to set up to evaluate the pe rformance of the ep3001. for proper measurement equipment setup, please follow the explanation belo w: fixed voltage type 1. connect the power supply to the vin and gnd term inals, respectively, on the right side of the evb. (do not hot-plug vin or increase vin over the rated maximu m supply voltage of 6v, or the part may be damaged.) 2. connect the load between the vout and gnd termin als, respectively. 3. connect the required measurement equipments, ref er to figure 1. 4. turn on the power supply. 5. measure vin, vout, iin and iout. adjustable type 1. select the shunt at jp4 for different output vol tage. if the vout required is not listed in the evb, plea se see output programming section. 2. connect the power supply to the vin and gnd term inals, respectively, on the right side of the evb. (do not hot-plug vin or increase vin over the rated maximu m supply voltage of 6v, or the part may be damaged.) 3. connect the load between the vout and gnd termin als, respectively. 4. connect the required measurement equipments, ref er to figure 1. 5. turn on the power supply. 6. measure vin, vout, iin and iout.
ep3001 evaluation board manual rev.01 2/4 jump setting 1. default setting of jp1 is run, so as to enable t he ep3001. if shutdown condition is required, pleas e turn off the power supply and switch jp1 to shdn. t hen power on to test the shutdown condition. do not keep jp1 floating at any time. 2. jp3 is for voltage option only. fixed is for fix ed voltage option with the marking of ?a2yw?, ?a3yw ?, ?a4yw? and ?c4yw?. adj is for adjustable voltage op tion with the marking of ?a1yw?. do not change jp3 at any time. 3. jp4 is for output voltage selection for adjustab le type. when aux is selected, please see the follo wing section. output programming the output programming resistors for adjustable typ e are listed in table 1. if aux with jp4 is selected, please put on r2f according to the follow ing equation: ?? ? ?? ? + = 1 2 1 6.0 r r v v out table 1 output programming resistor vout (v) r1 (k ) r2 (k ) 1.2 60 r2a = 60 1.5 60 r2b =90 1.8 60 r2c = 120 2.5 60 r2d =190 3.1 60 r2=250 3.3 60 r2e = 270 aux 60 r2f = function figure 1 ep3001 evaluation board diagram
ep3001 evaluation board manual rev.01 3/4 demonstration circuit pcb layout
ep3001 evaluation board manual rev.01 4/4 bill of material item qty ref. part description manufacture/part no. note 1 1 c1 cap.,x5r ceramic, 4.7uf,6.3v,20%,0805 murata,grm31cr71a475ka01l 2 1 c2 cap.,x5r, 10uf,6.3v,20%,1206 murata,grm31cr70j106ka01l 3 1 c3 cap.,npo, 22pf,25v,20%,0603 garrett,0603cg220j9b20 4 1 l1 inductor,2.2uh,20% murata,lqh43cn2r2m03l 5 1 r1 res.,chip,60k,1/16w, 1%,0603 aac 6 1 r2a res.,chip,60k,1/16w, 1%,0603 aac 7 1 r2b res.,chip,90k,1/16w, 5%,0603 aac 8 1 r2c res.,chip,120k,1/16w, 5%,0603 aac 9 1 r2d res.,chip,250k,1/16w, 5%,0603 aac 10 1 r2e res.,chip,270k,1/16w, 5%,0603 aac 11 1 u1 ic,ep3001,sot23-5 a1yw, a2yw, a3yw, a4yw, c4yw
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