Datenblatt für STEVAL-ISV019V1 Data Brief von STMicroelectronics

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For further information contact your local STMicroelectronics sales office.
November 2014 DocID025591 Rev 3 1/9
STEVAL-ISV019V1
Evaluation board for SPV1050 ULP energy harvester and battery
charger – boost configuration
Data brief
Features
•First startup at Vin = 500 mV
•Input voltage working range:
150 mV ≤ Vin ≤ V
EOC
•End of charge battery voltage: V
EOC
= 4.25 V
•Battery undervoltage protection: V
UVP
= 3.7 V
Applications
•Charge any battery chemistry, including lithium
based, NiMH, solid state thin film and
supercapacitor.
•WSN, HVAC, building and home automation,
industrial control, access control, smart
lighting, asset and livestock positioning and
tracking, surveillance.
•Body area network, sportswear, fitness.
Description
The STEVAL-ISV019V1 is an evaluation board
based on the ultralow power energy harvester
and battery charger SPV1050. For any detail
related to the SPV1050 features and
performances please refer to the datasheet.
The evaluation board implements the boost
configuration of the DC-DC converter and has the
purpose of enhancing the SPV1050 based
applications development by testing the silicon
performance thanks to many jumpers and test
points, and by helping to find out the best system
configuration to make the SPV1050 device
working at the most of efficiency.
The STEVAL-ISV019V1 is optimized to:
Harvest energy from PV panels supplying
0.5 V ≤ V
MP
≤ 2.5 V and 30 µA ≤ I
MP
≤ 20 mA.
Charge a battery with 3.7 V undervoltage
protection threshold (V
UVP
) and 4.2 V end of
charge voltage threshold (V
EOC
).
Nevertheless, few easy changes on the
application components (input and output resistor
partitioning, C
IN
capacitor) allow to use a different
PV panel and source (like TEG), and a battery by
setting the V
MPP_SET
, the V
UVP
and the V
EOC
thresholds according to the new source and load.
More in detail, operating ranges can be extended
as follows: V
MP
from 150 mV up to 5 V, I
MP
up to
100 mA, V
UVP
down to 2.2 V and V
EOC
up to
5.3 V.
www.st.com
Schematic and bill of material STEVAL-ISV019V1
2/9 DocID025591 Rev 3
1 Schematic and bill of material
The schematic, bill of material and gerber files can be downloaded from the Design
resources tab of the STEVAL-ISV019V1 product folder on www.st.com.
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STEVAL-ISV019V1 Schematic and bill of material
DocID025591 Rev 3 3/9
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Schematic and bill of material STEVAL-ISV019V1
4/9 DocID025591 Rev 3
Table 1. Bill of material
Sect. Item Q.ty Reference Part / value Toler.
%Voltage
current Watt Technol.
info. Package Manufacturer Manufacturer
code More information
DC-DC input section
1 1 U1 SPV1050 VFQFPN 3 x
3 x 1 20L
(code A0BR) ST SPV1050
2 1 CN1 2-ways screw
connector TE
Connectivity 282834-2 Input connector for PV
panel or TEG
3 1 C1 4.7 µF 15% 16 V 0805 Murata
GCM21BR71C4
75KA73L Input capacitance
4 0 C2 (DNM) 4.7 µF 15% 16 V 0805 Murata
GCM21BR71C4
75KA73L
5 3 J1, J2, J3 jumper Pitch
2.54 mm TH Enable/disable MPPT
8 1 R1 0 Ω1% 0805 VISHAY CRCW08052M7
0FKEA Resistor partitioning for
MPP track/setting9 1 R2 1.5 MΩ1% 0805 VISHAY CRCW08051M5
0FKEA
10 1 R3 8.2 MΩ1% 0805 YAGEO 232273468205
11 1 L1 22 µH 20% Coilcraft LPS4018-
223ML_ DC-DC inductor
12 1 C8 10 nF 15% 16 V X7R 0603 Murata
GRM188R71C1
03KA01D
Voltage sampling time
constant capacitance
STEVAL-ISV019V1 Schematic and bill of material
DocID025591 Rev 3 5/9
Battery section
13 1 CN4 2-way screw
connector TE
Connectivity 282834-2 Connector for external
supply of pin STORE
14 1 C9 47 µF 20% 10 V 0805 TDK
C2012X5R1A47
6M125AC
15 1 R4 6.2 MΩ5% 0805 RS RS-0805-6m2-
5%-0.125W Resistor partitioning for
UVP, EOC, protection
setting
16 1 R5 499 kΩ1% 0805 VISHAY CRCW0805499
KFKEA
17 1 R6 2.7 MΩ1% 0805 VISHAY CRCW08052M7
0FKEA
18 1 CN2 8-way screw
connector TE
Connectivity 282836-8 Connector for battery and
battery status signals
LDOs section
19 2 C6, C7 100 nF 10% X7R 0603 KEMET C0603C104K4R
AC Tank capacitor for LDOs
21 2 SW1, SW2 5-pin male
Stripline Pitch
2.54 mm TH
Close 2 - 3: LDO disabled
Close 1 - 2: LDO enabled
Floating: external control
through CN3
23 1 CN3
4-way
screw
connector
TE
Connectivity 282836-4 Connector for LDOs
enable connection
Table 1. Bill of material (continued)
Sect. Item Q.ty Reference Part / value Toler.
%Voltage
current Watt Technol.
info. Package Manufacturer Manufacturer
code More information
Schematic and bill of material STEVAL-ISV019V1
6/9 DocID025591 Rev 3
List of test points
25 1 TP1 True hole PV+ pin sensing and
soldering
26 1 TP2 True hole MPP pin sensing and
soldering
27 1 TP3 True hole MPP-SET pin sensing
and soldering
28 1 TP4 True hole STORE pin sensing and
soldering
29 1 TP5 True hole ULP pin sensing and
soldering
30 1 TP6 True hole EOC pin sensing and
soldering
31 1 TP7 True hole GND pin sensing and
soldering
32 1 TP8 True hole GND pin sensing and
soldering
33 1 TP9 True hole IN_LV pin sense
(for probe scope)
34 1 TP10 True hole GND pin sensing
(for probe scope)
Table 1. Bill of material (continued)
Sect. Item Q.ty Reference Part / value Toler.
%Voltage
current Watt Technol.
info. Package Manufacturer Manufacturer
code More information
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DocID025591 Rev 3 7/9
STEVAL-ISV019V1 Layout
9
2 Layout
From Figure 2 to Figure 4 show the component placement and the layout (top and bottom
views) of the STEVAL-ISV019V1.
Figure 2. Layout - silkscreen view
Figure 3. Layout - top view Figure 4. Layout - bottom view
Revision history STEVAL-ISV019V1
8/9 DocID025591 Rev 3
3 Revision history
Table 2. Document revision history
Date Revision Changes
27-Nov-2013 1 Initial release.
29-Apr-2014 2
Updated Section : Features on page 1 (updated values
of “First startup at Vin” and “Input voltage working
range”).
Updated Section : Description on page 1 (updated
values of “Harvest energy from PV panels supplying”,
added extended operating ranges).
Updated Section 1: Schematic and bill of material on
page 2 (updated web link).
Updated Figure 1: Schematic on page 3 (updated value
of C9 capacitor, minor modifications).
Updated Table 1: Bill of material on page 4 (removed
“PV panel” item, updated values and manufacturer
information of C9 capacitor, updated “Technol. info.” of
J1, J2, J3 jumper, quantity of R6 item, item numbers and
“More information” for several items).
Minor modifications throughout document.
13-Nov-2014 3 Updated figure in cover page.
DocID025591 Rev 3 9/9
STEVAL-ISV019V1
9
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