Picor Corporation www.picorpower.com
QPI-8 EVAL1 Data Sheet Rev. 1 Page 1 of 2
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The QPI-8 Evaluation board provides an easy to use
evaluation platform for testing the QPI-8 EMI filter with
Hot-Swap in existing or prototype systems. The board
comes with a mounted QPI-8, RPG (PWRGD=Power Good)
pull-up resistor, ROV and RUVEN jumper resistors, and
screwterminal blocks for electrical connections.
External resistors can be used in series with the UVEN and
OV inputs to the BUS+ terminal to increase the threshold
voltages or connected directly for minimum specified
thresholds. Values can be determined using figure 6 of the
datasheet to trim these parameters up to the desired
levels. Optional C2 capacitor is described for hold-up
considerations during a power dropout and C3 can be
added to filter nuisance over voltage low energy spikes
that do not merit a shutdown condition.
Please refer to the QPI-8 datasheet for detailed
description and typical operation of the product when
applying this evaluation board. Specifically refer to Figures
9a and 9b in the datasheet for detailed application
circuits.
Also refer to QPI-AN1 for critical PCB layout and EMI
considerations for QPI products in general but refer to the
individual product specifications for their PCB layout
footprint and pin-out.
QPI-8L
BUS+
BUS+
UVEN
SW
BUS-
BUS-
C2
47 F
ROV
RUVEN
RPG
75K
OV
QPI+
QPI+
QPI-
QPI-
SHIELD
BUS-
PWRGD
NC
SW
SW
12
13
14
15
16
1
8
7
6
5
C1
2
3
4
3
2
1
3
2
1
1
2
3
J3
QPI+
QPI-
SHIELD
OUTPUT
J2
BUS+
BUS-
SHIELD
INPUT
J1
PWRGD
OV
UVEN
SIGNALS
11
10
9
C3
BUS-
0
0
Figure 1 - Evaluation board schematic
QPI-8 EVAL1
QuietPower
TM
Evaluation Board for Active EMI Filters with Hot-Swap
Picor Corporation www.picorpower.com QPI-8 EVAL1 Data Sheet
P/N 30641
Rev. 1 8/05
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Vicor Corporation
25 Frontage Road, Andover, MA, USA 01810
Tel: 800-735-6200 Fax: 978-475-6715
Email
Vicor Express: vicorexp@vicr.com
Technical Support: apps@vicr.com
Vicor's comprehensive line of power solutions includes high-density AC-DC & DC-DC modules and accessory
components, fully configurable AC-DC & DC-DC power supplies, and complete custom power systems.
Information furnished by Vicor is believed to be accurate and reliable. However, no responsibility is assumed by Vicor for its
use. No license is granted by implication or otherwise under any patent or patent rights of Vicor. Vicor components are not
designed to be used in applications, such as life support systems, wherein a failure or malfunction could result in injury or
death. All sales are subject to Vicor's Terms and Conditions of Sale, which are available upon request.
Specifications are subject to change without notice.
Figure 2 - Evaluation board layout
QPI-8 EVAL Board revA
Q
P
I-
Q
P
I+
S
H
IE
L
D
SHIELD BUS- BUS+
UVEN OV PWRGD
U1
C2
C1
ROV
RPG
RUVEN
C3
QPI-8L
XXXXA
US AND FOREIGN PAT ENT S, PAT ENT S PENDING
PHIL
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Part Number
Description
QPI-8 EVAL1
Evaluation board for QP8-1L
Ordering Information
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