DEMO MANUAL
DEMO MANUAL SCP-LTC3114-1-EVALZ
SCP-LTC3114-1-EVALZ
Signal Chain Power Series
LTC3114-1 Buck-Boost Converter
DESCRIPTION
Demonstration circuit SCP-LTC3114-1-EVALZ features the
LTC3114-1, a wide operating range, synchronous monolithic buck-boost converter with programmable average
output current. The circuit operates with a 2.2V to 40V input voltage range.
Like all boards in the Signal Chain Power series, this board
is designed to be easily plugged into other SCP boards to
form a complete signal chain power system, enabling fast
evaluation of low power signal chains. To evaluate this
board, some universal SCP hardware is required, namely:
SCP-INPUT-EVALZ
SCP-OUTPUT-EVALZ
SCP-FILTER-EVALZ
SCP-THRUBRD-EVALZ
Table 1. Performance Summary
SYMBOL
PARAMETER
VIN(MAX)
Max Input Voltage
VOUT(MAX)
Max Output Voltage
IL(LIM)
Inductor Current Limit
To properly evaluate SCP series demo boards, you will
need the SCP Configurator companion software. SCP
Configurator can help you choose the right board and topology for your design.
Note that this Demo Manual does not cover details important to the operation and configuration regarding the
LTC3114-1. Please refer to the LTC3114-1 datasheet for a
complete description of the part.
Design files for this circuit board are available.
All registered trademarks and trademarks are property of their respective owners.
SCP-1X2BKOUT-EVALZ
SCP-1X5BKOUT-EVALZ
SCP-5X1-EVALZ
NOTES
MIN
TYP
1.3
1.7
Output capacitor rating limited. Replace for higher VOUT.
MAX
40
40
2.3
UNITS
V
V
A
BOARD IMAGE
Figure 1. SCP-LTC3114-1-EVALZ Evaluation Board
Rev. 0
1
DEMO MANUAL SCP-LTC3114-1-EVALZ
QUICK START PROCEDURE
Demonstration circuit SCP-LTC3114-1-EVALZ is easy to
set up to evaluate the performance of any SCP hardware configuration.
NOTE: Make sure that the input voltage is always within
specification. If using a dynamic load to measure output voltage, make sure the load is initially set to zero.
1. The SCP-LTC3114-1-BB-EVALZ ships with a default
output voltage of 5V. To change the output voltage, see
“Configuration Settings” section, and modify the board
accordingly. Be sure to check for open connections or
solder shorts after making any modifications.
3. Check for proper output voltage. The output should be
regulated at the programmed value (±5%).
2. Connect the SCP-INPUT-EVALZ and SCP-OUTPUTEVALZ boards to the SCP-LTC3114-1-BB-EVALZ (refer
to Figure 2) and connect the input board to a voltage
source, VSOURCE. Connect the output board to a voltmeter or dynamic load. Slowly raise the input voltage
until the SCP-LTC3114-1-BB-EVALZ powers up into
regulation and sweep VSOURCE through the desired
range of operation.
4. Once the proper output voltage is established, power
off VSOURCE and similarly test other boards in the SCP
system until all elements have been individually verified
prior to assembling into the final circuit configuration.
NOTE: When measuring the input or output voltage ripple, use the optional SMA connector locations available
on the input, output, 1 ´ 5, 1 ´ 2, and 5 ´ 1 breakout
boards. Avoid using the test point connections with
long scope leads.
Figure 2. Proper Measurement Equipment Setup (Use SMA connectors for Measuring Input or Output Ripple)
Rev. 0
2
DEMO MANUAL SCP-LTC3114-1-EVALZ
CONFIGURATION SETTINGS
Demonstration circuit SCP-LTC3114-1-EVALZ features the
LTC3114-1, a wide operating range, synchronous monolithic buck-boost converter with programmable average
output current. The circuit operates with a 2.2V to 40V input voltage range.
The output of the SCP-LTC3114-1-EVALZ is resistor-programmable from 3.0V to 40V. The board can be also configured to drive VIOC-capable linear regulators.
OUTPUT VOLTAGE PROGRAMMING
⎛ R1 ⎞
VOUT = 1 .0 V ⎜ 1 + ⎟
⎝ R2 ⎠
Table 2. Resistor Selection Guide for Common Output Voltages
VOUT (V)
R1 (Ω)
R2 (Ω)
3.0
2M
1M
5.0
2M
499k
6.0
2M
402k
7.0
2M
332k
8.0
2M
287k
9.0
2M
249k
10.0
2M
221k
11.0
2M
200k
12.0
2M
182k
13.0
2M
165k
14.0
2M
154k
15.0
2M
143k
16.0
2M
133k
17.0
2M
124k
18.0
2M
118k
19.0
2M
110k
20.0
2M
105k
21.0
2M
100k
22.0
2M
95.3k
23.0
2M
90.9k
24.0
2M
86.6k
25.0 (Note 1)
2M
82.5k
30.0 (Note 1)
2M
69.8k
35.0 (Note 1)
2M
59k
40.0 (Note 1)
2M
51.1k
RUN PIN CONFIGURATION
The RUN pin is tied to the optional SCP Run/Sequence
header P1. To create a harness for this function, use Molex
part 0510650300 with crimp pin 50212-8000.
To use an active run signal, use a 1.00MW for either pullup or pull-down resistors R5 and R6, short R9 with 0W,
and use the drive signal from connector P1.
VOLTAGE INPUT-TO-OUTPUT CONTROL (VIOC)
IMPLEMENTATION
To implement the VIOC function for this regulator, set R12
to 0W. Refer to the “Configuration Settings” section in the
Demo Manual for the low-dropout (LDO) linear regulator
board and use the following configuration for this board.
Table 3. VIOC Cross-Reference Designators
VIOC SETTING REFERENCES
VOUT Reference Designators
RBOT
RTOP
RMAX
R2
R1
R8
æR
+ RTOP ö
VLDOIN - VLDOOUT = VVIOC = 1.0V ç BOT
÷
RBOT
è
ø
æR
+ RTOP + RMAX ö
V(MAX )LDOIN = 1.0V ç BOT
÷ + ISINKRMAX
RBOT
è
ø
ISINK is the current through RMAX, typically 15µA, so RBOT
should be sized such that the divider current runs a minimum of 100µA to minimize the ISINK error term.
Note 1. Output capacitor rating limited. Replace for higher VOUT.
Rev. 0
3
DEMO MANUAL SCP-LTC3114-1-EVALZ
PARTS LIST
ITEM
1
2
3
4
5
6
7
8
9
10
11
12
13
14
QTY
1
2
1
1
1
2
2
1
1
1
1
1
1
1
15
16
17
18
19
1
1
1
1
1
20
21
22
23
24
25
26
27
28
29
1
1
4
1
1
1
1
1
1
1
30
1
REFERENCE
PCB
C1, C2
C10
C11
C12
C4, C13
C14, C15
C3
C5
C6
C7
C8
C9
D1
PART DESCRIPTION
PRINTED CIRCUIT BOARD
CAP CER 68NF 16V 10% X7R 0402
CAP CER C0G, FOR COMMERCIAL APP
CAP MONO CER CHIP FOR AUTOMOTIVE, X7R
CAP MLCC 0402 (Note 2)
CAP CER 22UF 25V 20% X7R 1812
CAP MLCC 0402 (Note 2)
CAP CER X7R
CAP CER X5R, GENERAL PURPOSE
CAP CER CHIP X7R
CAP ELECTROLYTIC (Note 2)
CAP CER X7R
CAP CER 4700PF 25V 10% X7R 0402
DIODE LOW VF MEGA SCHOTTKY BARR RECT
MANUFACTURER/PART NUMBER
ANALOG DEVICES 08_059797a
SAMSUNG CL05B683KO5NNNC
VISHAY VJ0402A100JXAAP54
MURATA GCM155R71E473KA55D
N/A
TDK C4532X7R1E226M250KC
N/A
SAMSUNG CL10B475KQ8NQNC
AVX CORPORATION 06033D105KAT2A
TDK C5750X7R1H106M
N/A
AVX 12065C105KAT2A
SAMSUNG CL05B472KA5NNNC
NXP SEMICONDUCTORS
PMEG2010AEH,115
D2
DIO SCHOTTKY BARRIER RECTIFIER, 2A
NEXPERIA PMEG6020ER
INPUT
CONN-PCB MALE HEADER 3POS 2.54MM PITCH R/A GOLD
SULLINS PBC03SBAN
L1
IND SHIELDED POWER 0.0163OHM DCR, 6.01A
COILCRAFT INC. MSS1048-682NLB
OUTPUT
CONN FEMALE 3POS 2.54MM PITCH R/A GOLD
SULLINS PPPC031LGBN-RC
CONN-PCB 3POS HEADER WIRE TO BRD WAFER ASSY STRAIGHT MOLEX 53253-0370
P1
2MM PITCH
R1
RES SMD 2M OHM 1% 1/8W 0805
YAGEO RC0805FR-072ML
R10
RES STANDARD THICK FILM CHIP JUMPER, FOR AUTOMOTIVE
VISHAY CRCW08050000Z0EA
R6, R9, R11, R12 RES THICK FILM 0805 (Note 2)
N/A
R2
RES PRECISION THICK FILM CHIP
PANASONIC ERJ-6ENF4993V
R3
RES PRECISION THICK FILM CHIP
PANASONIC ERJ-6ENF1002V
R4
RES PRECISION THICK FILM CHIP
PANASONIC ERJ-2RKF2742X
R5
RES THICK FILM CHIP, GENERAL PURPOSE
YAGEO RC0805JR-071ML
R7
RES THICK FILM 0402 (Note 2)
N/A
R8
RES PRECISION THICK FILM CHIP
PANASONIC ERJ-6ENF49R9V
U1
IC-ADI 40V, 1A SYNCHRONOUS BUCK-BOOST DC/DC CONVERTER ANALOG DEVICES LTC3114MPDHC-1#PBF
WITH PROGRAMMABLE OUTPUT CURRENT
VIOC
CONN FEMALE 2POS 2.54MM PITCH R/A GOLD
SULLINS PPPC021LGBN-RC
Note 2. These items are not stuffed (DNI).
Rev. 0
4
DEMO MANUAL SCP-LTC3114-1-EVALZ
SCHEMATIC DIAGRAM
8
7
MALE
INPUT
1
2
3
PBC03SBAN
VIN
GND
NC
DNI
C6
10UF
50V
C8
1UF
50V
6
C12
DNI
RUN
VOUT
R5
1MEG
R6
0
DNI
RUN
R11
0
DNI
GND
MODE
A
5
D2
C
R3
10K
C1
68NF
16V
PMEG6020ER
C11
0.047UF
25V
L1
6.8UH
MSS1048-682NLB
PVIN
13
BST1
10
VIN
14
PROG
4
RUN
16
MODE
5
12
BST2
3
U1 PVO UT 11
PLDO
9
7
6
VC
FB
LDO
R4
27.4K
C2
68NF
16V
R10
4
MODE
D1
PMEG2010AEH,115
0
C10
10PF
50V
C9
4700PF
25V
LTC3114MPDHC-1#PBF
GND
4
C3
4.7UF
6.3V
GND
C
DNI
R9 0
GND
GND
5
A
C7
330UF
50V
P1
1
2
3
53253-0370
6
R8
49.9
R1
2M
R2
499K
R7
C14
DNI
DNI
C15
DNI
0
R12 DNI
VIOC
3
C4
22UF
25V
3
C13
22UF
25V
VIOC
VIOC
PPPC021LGBN-RC
AN A LOG
DEV CES
OWNED O R CONTROLL ED BY OWNED ANALOG DEVI CES.
THE EQUIPMENT SHOWN HEREO N MAY BE PROTECTED BY PATENTS
OF ANAL OG DEVICES.
OR FOR ANY O THER PURPOSE DETRIMENTAL TO THE INTERESTS
IN PART, OR U SED I N FURNI SHI NG INFORMATIO N TO OTHERS,
IT IS NOT TO BE REPRODUCED OR COPIED, IN WHO LE OR
THIS DRAWING IS THE PROPERTY O F ANALO G DEVICES INC.
GND
GND
1
2
LTC3114-1 40V, 1A SYNCHRONOUS BUCK-BOOST
DC/DC CONVERTER WITH PROGRAMMABLE OUTPUT CURRENT
7
15
SW1
2
SW2
PGND
1
D
C
B
A
8
EPAD
8
GND
PAD
P
N
C5
1UF
25V
REV
VOUT
GND
NC
2
2
1
2
3
1:1
SCALE
1
DATE
SHEET
1
OF
2
REV
A
APPROVED
2
D
C
B
A
5
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog
Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications
subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
REVISIONS
DESCRIPTION
OUTPUT
PPPC031LGBN-RC
D
D
SIZ E
02_059797
DRAWING NO.
SCHEMATIC
HW TYPE
: Customer Evaluation
Product(s): LTC3114-1
: NA
DESIGN VIEW
J VIERNES
PTD ENGINEE R
Rev. 0
DEMO MANUAL SCP-LTC3114-1-EVALZ
ESD Caution
ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection
circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality.
Legal Terms and Conditions
By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and
conditions set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation
Board until you have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you (“Customer”)
and Analog Devices, Inc. (“ADI”), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to
Customer a free, limited, personal, temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY. Customer understands and
agrees that the Evaluation Board is provided for the sole and exclusive purpose referenced above, and agrees not to use the Evaluation Board for any other purpose. Furthermore, the license granted
is expressly made subject to the following additional limitations: Customer shall not (i) rent, lease, display, sell, transfer, assign, sublicense, or distribute the Evaluation Board; and (ii) permit any Third
Party to access the Evaluation Board. As used herein, the term “Third Party” includes any entity other than ADI, Customer, their employees, affiliates and in-house consultants. The Evaluation Board is
NOT sold to Customer; all rights not expressly granted herein, including ownership of the Evaluation Board, are reserved by ADI. CONFIDENTIALITY. This Agreement and the Evaluation Board shall all
be considered the confidential and proprietary information of ADI. Customer may not disclose or transfer any portion of the Evaluation Board to any other party for any reason. Upon discontinuation of
use of the Evaluation Board or termination of this Agreement, Customer agrees to promptly return the Evaluation Board to ADI. ADDITIONAL RESTRICTIONS. Customer may not disassemble, decompile
or reverse engineer chips on the Evaluation Board. Customer shall inform ADI of any occurred damages or any modifications or alterations it makes to the Evaluation Board, including but not limited
to soldering or any other activity that affects the material content of the Evaluation Board. Modifications to the Evaluation Board must comply with applicable law, including but not limited to the RoHS
Directive. TERMINATION. ADI may terminate this Agreement at any time upon giving written notice to Customer. Customer agrees to return to ADI the Evaluation Board at that time. LIMITATION OF
LIABILITY. THE EVALUATION BOARD PROVIDED HEREUNDER IS PROVIDED “AS IS” AND ADI MAKES NO WARRANTIES OR REPRESENTATIONS OF ANY KIND WITH RESPECT TO IT. ADI SPECIFICALLY
DISCLAIMS ANY REPRESENTATIONS, ENDORSEMENTS, GUARANTEES, OR WARRANTIES, EXPRESS OR IMPLIED, RELATED TO THE EVALUATION BOARD INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTY OF MERCHANTABILITY, TITLE, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS. IN NO EVENT WILL ADI AND ITS
LICENSORS BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES RESULTING FROM CUSTOMER’S POSSESSION OR USE OF THE EVALUATION BOARD, INCLUDING
BUT NOT LIMITED TO LOST PROFITS, DELAY COSTS, LABOR COSTS OR LOSS OF GOODWILL. ADI’S TOTAL LIABILITY FROM ANY AND ALL CAUSES SHALL BE LIMITED TO THE AMOUNT OF ONE
HUNDRED US DOLLARS ($100.00). EXPORT. Customer agrees that it will not directly or indirectly export the Evaluation Board to another country, and that it will comply with all applicable United States
federal laws and regulations relating to exports. GOVERNING LAW. This Agreement shall be governed by and construed in accordance with the substantive laws of the Commonwealth of Massachusetts
(excluding conflict of law rules). Any legal action regarding this Agreement will be heard in the state or federal courts having jurisdiction in Suffolk County, Massachusetts, and Customer hereby submits
to the personal jurisdiction and venue of such courts. The United Nations Convention on Contracts for the International Sale of Goods shall not apply to this Agreement and is expressly disclaimed.
Rev. 0
6
1/21
www.analog.com
© ANALOG DEVICES INC. 2020
