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PI3
33XX‐00‐EV
VAL1
XX=12,01,02
2,03,05 Cool‐Pow
wer®
8V to
o 36Vin Cool‐Po
ower® ZV
VS Buck Regulattor
Board Usser Guid
de
Evaluation B
Descrip
ption The PI33XX
X‐XX‐EVAL1 evvaluation board
d demonstrate
es the featurres and benefiits of the Pico
or Cool‐Powerr® ZVS Buck R
Regulator PI33X
XX family. The board feature
es the ZVS Bu
uck Regulator SIP (U1), alongg with inducto
or (L1), ceram
mic input (C1
1‐C8), and outtput capacitorrs (C10‐C16). The evaluation board provides p
several options fo
or making inp
put power (VIN
N and GND) and output load (VOUT and
d GND) connecctions. The user can solder tab style banaana jacks or wire, use thrreaded bindin
ng posts secured by a retain
ning nut, or to simply use a #
#6 nut and bo
olt connection. All the I/O
O pins are labe
eled and route
ed to the boarrd edge for easy e
access. Each E
I/O pin is accompanied with an ad
djacent 50mil through‐hole fo
or adding a tesst point or to
o facilitate wirin
ng to external circuitry. XX‐XX‐EVAL1 B
Board Fiigure 1 – PI33X
ope tip jack fo
or measuring o
output The bboard has a sco
voltagge (VOUT), an
nd has locations for two op
ptional jacks ffor measuring VIN and the sw
witching node of the regulaator (See Figure 4). Theree are two heeaders installled: an ENABLLE jumper wh
hich can be ussed to enabl e or disable th
he converter an
nd the remote sense jumpeer (H1) that will connect the buck’s reemote sense pin to the outtput at the VOU
UT terminal. Theree is a location for an option
nal 4‐pin I2C h
header that aallows users tto set certain device param
meters and too read the fault registers of tthe regulator ((select regulaator versions).. Each regulator can be asssigned an ad dress from 0 to 7 using the ttwo tri‐state ad
ddress pins (A
ADR0 and ADR
R1). Conneections requireed for parallel regulator opeeration are ggrouped together (labeled C
Current Sharin
ng) to allow for easy cconnection b
between evaluation boardds. There is a connection w
wire from SYN
NCI to SGND
D that ensures SYNCI is groun
nded when not used in parrallel with ano
other PI33XX regulator. This wire shouldd be removed for parallel op
peration. Theree are two unpo
opulated resistor footprints (RADJ1 and R
RADJ2) used in
n trimming thee output voltagge and a cappacitor footp
print (CTRK) to add additional capaccitance to the o
output trackingg pin. Please reefer to the prroduct datasheeet for more d
detailed inform
mation on theese topics. The eevaluation board is constructted using 4 layyers of 2oz coopper and is rrouted to optiimize the regu
ulation path between inp
put and outp
put voltage, which reducces the parassitic losses an
nd yields thee best efficieency. Picor Corporation • picorpo
ower.com PI33XX‐00‐EVA
AL1 Rev 1.0 Juuly 17, 2012 
Pagee 1 of 8 

Evaluattion Board Supply an
nd Load Co
onnectionss Figure 2
2 ‐ Evaluation b
board measureement connecttion displays the reccommended co
onnections forr input supply and output loading, and thee best test poin
nts for Figure 2 d
measuringg input and outtput voltages. All the I/O pin
ns are brought out to the edgge to allow forr easy measureement and/or con
nnection to the
e user’s external circuitry. Picor Corporation • picorpo
ower.com PI33XX‐00‐EVA
AL1 Rev 1.0 Juuly 17, 2012 Pagee 2 of 8 

Evaluattion Board Schematicc J
JJVOUT
P
PI33XX
C1
VIN
C2
C3
C4
4
C5
C6
C7
C8
GND
L1
VIN
SYNCO
SYNCI
1 2 3 4
SDA
SCL
EN
C13
C1
15
C16
C14
VOUT
GND
REM
ADJ
RADJ1
TRK
PGD
H1
SGND
Rem
mote Sense Jumper
RADJ2
SYNCO SYN
NCI DAT CLK EN
C12
EAO
ND
GN
SGND
C11
VOUT
ADR0
ADR1
ENABLE
C10
VS1
AD R0 ADR1
CTRK
N/C TR
RK EAO ADJ REM
Figure 3 – PI33
F
3XX‐XX‐EVAL1 SSchematic PI33XX‐‐xx‐EVAL1 BOM Device PI3312 PI3301 PI3302 PI3303 Qty Designators Value Description Manufactu rer P
Part Number 1 U1 2.5V ZZVS Regulaator ZVSS Regulator PICOR
PII3312‐00‐LGIZ 4 C10, C1
11, C12, C13 100uF, 6V Ceraamic Output Capacitor C
Murata
GRM331CR60J107ME339L 1 L1 200nH Buck Inductor Cooper
FFPT705‐200‐R 1 U1 3.3V ZZVS Regulaator ZVSS Regulator PICOR
PII3301‐00‐LGIZ 4 11, C10, C1
C12, C13 100uF, 6V Ceraamic Output Capacitor C
Murata
GRM331CR60J107ME339L 1 L1 200nH Buck Inductor Cooper
FFPT705‐200‐R 1 U1 5V ZV
VS Regulaator ZVSS Regulator PICOR
PII3302‐00‐LGIZ 4 C10, C1
11, C12, C13 16V 47uF, 1
Ceraamic Output Capacitor C
Murata
GRM331CR61A476ME115 1 L1 200nH Buck Inductor Cooper
FFPT705‐200‐R 1 U1 12V ZV
VS Regulaator ZVSS Regulator PICOR
PII3303‐00‐LGIZ 4 C10, C1
11, C12, C13 25V 22uF, 2
Ceraamic Output Capacitor C
Murata
GRM331CR61E226KE15L 1 L1 230nH Buck Inductor Cooper
FFPT705‐230‐R Table 1 – PI33X
T
XX‐XX‐EVAL1 Biill of materials (continued on next page) Picor Corporation • picorpo
ower.com PI33XX‐00‐EVA
AL1 Rev 1.0 Juuly 17, 2012 Pagee 3 of 8 

Device User Optional Common PI3305 Qty Designators Value Description Manufactu rer P
Part Number 1 U1 15V ZV
VS Regulaator ZVSS Regulator PICOR
PII3305‐00‐LGIZ 4 11, C10, C1
C12, C13 25V 22uF, 2
Ceraamic Output Capacitor C
Murata
GRM331CR61E226KE15L 1 L1 230nH Buck Inductor Cooper
FFPT705‐230‐R 10 ADJ, AD
DR0, ADR1, EAO, EN, REM, SGND
D, SYNCI, SYNCO, TRK SM
M Testpoint Keystonee 5015 4 C1, C2, C3, C4 4.7uF, 5
50V Ceramicc Capacitor, 50V,, X7R Murata
GRM331CR71H475KA112L 4 C5, C6, C7, C8 0.1uF, 5
50V Ceram
mic Capacitor TDK C20012X7R1H104K
1 C14 0.1uF, 5
50V Ceram
mic Capacitor Murata
GRM319R71H104KA01D 2 C15, C16 1uF, 50V Ceram
mic Capacitor Murata
GRM1188R71C105KA112J 1 CTRK
K 47nFF Ceram
mic Capacitor Murata
GRM1188F51H473ZA011D 2 ENABLE,, H1 Heaader Jumper Samtec
TSSW‐148‐07‐F‐S 3 VIN, GND, V
VOUTT TH
H Testpoint Vector
K24 1 JJVOU
UT Johnson Jack Tektronixx 131503100 1 PCB PI33XX
X‐xx‐EVAL1 PCB
PICOR
PCB0108 2 1, RADJ1
RADJ2 User deffined 0603 Trim resistors TBD TBD 2 JJVIN, JJV
VSW Option
nal Sco
ope Tip Jack Tektronixx 131503100 Table 1 ‐ PI33XX‐XX‐‐EVAL1 Bill of m
materials (conttinued on from
m previous pagee) Picor Corporation • picorpo
ower.com PI33XX‐00‐EVA
AL1 Rev 1.0 Juuly 17, 2012 Pagee 4 of 8 
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Evaluattion Board Notes The evaluaation board has solder massk openings on the bottom
m side of the board to allow
w for the opttion of additional output capacittance (4 x 1206
6 or 2 x 1812).
There are ttwo additionall, unmarked, sccope tip test p
points (circled iin red in figuree 4) that allow the user to meeasure VIN and th
he switching no
ode (VS1). The
ese are labeled as JJVIN and J JVSW in Figuree 4. dition of an eleectrolytic bulk storage capaciitor. This capaccitor is There are ttwo thru‐hole pads (blue circcle) for the add
required when w
the evalu
uation board is connected to the input vooltage source through long leads. A 100µF, 50V Electrolyticc is recommended with an ESSR between 20
0 and 50mΩ. hted in green b
box in figure 4) are not electrrically connecteed to each other. The two pins labeled as ““N/C” (highligh
n internal conn
nection within the PI33XX between ground s SGND and PG
GND. It is not rrequired to tiee these There is an
two grounds together exxternally and th
hese two groun
nds are not connnected together on the evaaluation board.. . Figure 4 – Optional teest points and component locations Picor Corporation • picorpo
ower.com PI33XX‐00‐EVA
AL1 Rev 1.0 Juuly 17, 2012 Pagee 5 of 8 
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PCB Me
echanicals Figu
ure 5 – PI33XX‐X
XX‐EVAL1 Boarrd Dimensionss
Picor Corporation • picorpo
ower.com PI33XX‐00‐EVA
AL1 Rev 1.0 Juuly 17, 2012 Pagee 6 of 8 
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PCB Me
etal Layerss To
op Metal M
Mid Layer 2 Miid Layer 1 Botttom Metal Picor Corporation • picorpo
ower.com PI33XX‐00‐EVA
AL1 Rev 1.0 Juuly 17, 2012 Pagee 7 of 8 
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Information
n furnished by V
Vicor is believed to be accurate and reliable. H
However, no ressponsibility is asssumed by Vicorr for its use. Vicor makes no reprresentations or warranties with
h respect to th e accuracy or ccompleteness o
of the contents of this m
changes to
o any products, specifications, and product deescriptions at an
ny time publication.. Vicor reservess the right to make without nottice. Informatio
on published by Vicor has been
n checked and iss believed to bee accurate at th
he time it was p
printed; however, Vicor V
assumes no responsibility for inaccuracie
es. Testing and other quality ccontrols are useed to the extent Vicor deems nece
essary to suppo
ort Vicor’s produ
uct warranty. Except E
where m
mandated by govvernment requirements, testingg of all parameters of each productt is not necessarrily performed. SSpecifications arre subject to chaange without no
otice. ndard Terms and
d Conditions Vicor’s Stan
All sales are
e subject to Vicor’s Standard Terrms and Conditio
ons of Sale, whicch are available on Vicor’s webp
page or upon req
quest. Product Wa
arranty In Vicor’s sttandard terms and conditions of sale, Vicor warrants that its pproducts are freee from non‐confformity to its Standard Specifications (the “Expresss Limited Warran
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not transferable
e. UNLESS OTH
HERWISE EXPRESSLY STATED IN A WRITTEN SALLES AGREEMENTT SIGNED BY A D
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OR ANY OTHER M
MATTER. This warran
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uyers should pro
ovide adequate design, testing aand operating saafeguards. epair or replace defective produ
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nce with its ownn best judgmentt. For service un
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buyer mustt contact Vicor to obtain a Re
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es if the productt was defective w
within the termss of this warrantty. product to tthe factory. Vico
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WITHOUT THE T
EXPRESS PR
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R AND GENERA
AL COUNSEL OF VICOR CORPORATION. As used he
erein, life support devices or sysstems are devicees which (a) are intended for su
urgical implant in
nto the hose failure to p
perform when pproperly used inn accordance with instructions ffor use body, or (b)) support or susstain life and wh
provided in the labeling caan be reasonably expected to result r
in a signifficant injury to the user. A crittical componentt is any em whose failurre to perform caan be reasonablly expected to ccause the failuree of the component in a life supporrt device or syste
em or to affect itts safety or effe
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Picor Corporation • picorpo
ower.com PI33XX‐00‐EVA
AL1 Rev 1.0 Juuly 17, 2012 Pagee 8 of 8 
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