Vicor PI2161-EVAL1 User Manual
Picor Corporation • picorpower.com
PI2161-EVAL1 User Guide Rev. 1.0 Page 1 of 8
PI2161-EVAL1 60V/12A High Side High Voltage Load Disconnect Switch
Evaluation Board User Guide
Content Page
Introduction ........................................................... 1
Product Description ................................................ 2
Schematic. .............................................................. 2
Bill of Materials ...................................................... 3
Test Procedure: ...................................................... 4
Recommended Material ......................................... 4
PCB layout .............................................................. 7
Mechanical drawing. .............................................. 7
PI2161-EVAL1
Series
Series
PI2161-EVAL1 Evaluation Board featuring
the Cool-Switch PI2161 Full-Function Load
Disconnect Switch.
The PI2161-EVAL1 Evaluation Board is intended to
acquaint the user with the benefits and features of the
PI2161 full function Load Disconnect
Switch solution. It is not designed to be installed in enduse equipment.
Please read this document before setting up the
PI2161-EVAL1 Evaluation Board and refer to the
PI2161 product datasheet for device specifications,
functional description and characteristics.
Introduction
The PI2161-EVAL1 allows the user to test the basic
principles and operational characteristics of a Load Switch
function, while also experiencing the benefits and value of
the PI2161 solution. The PI2161-EVAL1 evaluation board is
configured to be installed between the input power source
and the load. PI2161 is capable of up to 12A, and is
suitable for a bus voltage up to 48V.
The PI2161-EVAL1 evaluation board is designed with an
optimized PCB layout and component placement to
represent a realistic high density final design for an
embedded Load Switch solution for 48V BUS applications
requiring up to 12A. This evaluation board is intended as
an easy and simple way to test the electrical and thermal
During operation, the power devices and surrounding
structures can be operated safely at high temperatures.
Remove power and use caution when connecting
and disconnecting test probes and interface lines to
avoid inadvertent short circuits and contact with hot
surfaces.
When testing electronic products always use
approved safety glasses. Follow good laboratory
practice and procedures.
performance of the PI2161 Full-Function Load Switch
solution.
Both dynamic and steady state testing of the PI2161 can be
completed on the PI2161-EVAL1 evaluation board, in
addition to using the key features of the product. Dynamic
testing can be completed under a variety of system level
fault conditions to check for response time to faults.
This document provides basic instructions for initial startup and configuration of the evaluation board. Further
information on the functionality of the PI2161 can be
found in the PI2161 product datasheet.
Picor Corporation • picorpower.com
PI2161-EVAL1 User Guide Rev. 1.0 Page 2 of 8
Figure 1: PI2161-EVAL1 Evaluation Board (1.8” x 1.8”)
Terminals Absolute Maximum Rating
Vin+
60V/12Adc
Vout+
60V/12Adc
EN, VO
-0.3V to 17.3V / 10mA
Terminal
Description
Vin+
Power source Input: or bus input designed to accommodate up to 12A continuous current.
Vin-
Input Ground: Connect to the power source low side.
EN
Enable input: Inverse of , set SW1 to Off position when EN input is used
Vout+
Output: Connect to the load high side.
VO
PI2161 Load Status pin: When the internal MOSFET gate is enabled
Vout-
Output Ground: Connect to the load low side.
Figure 2: PI2161-EVAL1 Evaluation Board schematic.
PI2161 Product Description
The Cool-Switch® PI2161 is a complete full-function Load
Disconnect Switch solution for medium voltage
applications with a high-speed electronic circuit breaker
and a very low on-state resistance MOSFET. It is
designed to protect an input power bus from output load
fault conditions. The PI2161 Cool-Switch solution is
offered in an extremely small, thermally enhanced 7mm x
8mm LGA package. The PI2161 enables an extremely low
power loss solution with fast dynamic response to an
over current fault or high conditions. The PI2161
senses a small portion of the total MOSFET current and
has a low voltage threshold allowing the use of low
power sense resistors.
Figure 1, shows a photo of the PI2161-EVAL1 evaluation
board with one load disconnect switch PI2161 SiP. The
board is built with options and features that enable the
user to fully explore the capabilities of the PI2161 Load
Disconnect Switch.
Table 1: PI2161-EVAL1 Evaluation Board Terminals Description Sc
Picor Corporation • picorpower.com
PI2161-EVAL1 User Guide Rev. 1.0 Page 3 of 8
Item
QTY
Ref.
Designator
Value/Part NO.
Description
Footprint
Manufacturer
1 1 C1
0.1μF
MLCC Capacitor, X7R, 0.1μF,50V
0805
2 2 C2, C3
1μF
MLCC Capacitor, X7R, 1μF,50V
1206
3 1
C4
22μF
ELEC Capacitor, 22μF,100V
4 2
EN, VO
1528
Turret Test point
TURRET - 1528
Keystone Electronics
5
4
Vin+, Vin-,
Vout+, Vout-
1502
Turret Test point
TURRET - 1502
Keystone Electronics
6 1 Q1
DTC114EUAT106
Transistor, Digital NPN,50V
SOT-323
Rohm Semiconductor
7
1
R1
120mΩ
Resistor, 0.12Ω,1%,0.25W
0805
8 R2
Not installed
Resistor
0805
9
1
R3
6.04kΩ
Resistor,6.04K,1%,0.25W
1206
10
1
R4
16.9kΩ
Resistor,16.9K,1%,0.1W
0603
11
1
R5
150kΩ
Resistor,150K,1%,0.1W
0603
12 1 SW1
Switch
SW SPDT SM
CAS-120
13 1 U1
PI2161-01-LGIZ
Picor Cool-Switch Controller IC
7mmx8mm 17-pin
LGA SiP
PICOR
Ref. Designator
Value/Part NO.
Functional Description
C1
0.1μF
VC Bypass Capacitor
C2, C3
Not installed
Snubber to reduce high voltage noise after disconnect due to high current short.
Recommended value 1μF.
C4
22μF
Output Electrolytic Capacitor
Q1
DTC114EUAT106
PI2161 enable inverting polarity
R1
120mΩ
Current sense resistor
R2
Not installed
Optional high side bias resistor.
R3
6.04kΩ
Low side bias resistor (RPG)
R4
16.9kΩ
VO voltage divider. When the internal MOSFET gate is enabled
R5
150kΩ
pin pull-up resistor.
SW1
Switch
Output Enable/Disable switch
U1
PI2161-01-LGIZ
Full-Function Load Disconnect Switch Solution.
Table 2: PI2161-EVAL1 Evaluation Board Bill of Materials
Table 3: Component functional description
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