ST STEVAL-IFP048V1 User manual

Introduction
The STEVAL-IFP048V1 is an industrial digital output expansion board based on ISO808A-1 and compatible with STM32
Nucleo. It provides a powerful and flexible environment for the evaluation of the driving and diagnostic capabilities of the
ISO808A-1 octal high-side smart power solid state relay, with embedded galvanic isolation and 20 MHz SPI control interface, in
a digital output module connected to 1.0 A industrial loads.
The STEVAL-IFP048V1 directly interfaces with the microcontroller on the STM32 Nucleo driven by GPIO pins and Arduino® R3
connectors, ensuring connectivity with either a NUCLEO-F401RE or a NUCLEO-G431RB development board.
The galvanic isolation between the microcontroller and the process stage is guaranteed by the ISO808A-1.
It is also possible to evaluate a 16 channel digital output system enabling the daisy chaining feature on two STEVAL-IFP048V1
stacked expansion boards.
Figure 1. STEVAL-IFP048V1 expansion board
Industrial digital output expansion board based on ISO808A-1 in TFQFPN32
package
UM3138
User manual
UM3138 - Rev 1 - October 2023
For further information contact your local STMicroelectronics sales office. www.st.com

1 Getting started
1.1 Overview
The STEVAL-IFP048V1 embeds the ISO808A-1 intelligent power switch (IPS), which features galvanic isolation,
20 MHz SPI and Power Good diagnostic, overcurrent and overtemperature protection for safe output loads
control.
The board is designed to meet the application requirements for the galvanic isolation between the user and power
interfaces.
The galvanic isolation embedded by the ISO808A-1 satisfies this requirement, avoiding the necessity of external
optocouplers, with a consequent cost saving and a reduced application size.
The expansion board features:
• Based on the ISO808A-1 octal high-side switch, which features:
– Operating range 9.2 to 36 V
– Low power dissipation (RON(MAX) = 260 mΩ)
– Process side operating current: up to 1.0 A per channel
– Embedded 2.5k VRMS galvanic isolation
– PGOOD (VCC voltage level alarm signalization)
– 20 MHz SPI with daisy chaining
– Fast decay for inductive loads
– Undervoltage lock-out
– Overload and overtemperature protections
– Loss of ground protection
– TFQFPN32 package
• Application board process side operating range: 10 (J10 open) to 33 V (J9 closed)
• Extended operating range of process side from 9.2 (J10 closed) up to 36 V (J9 open)
• Application board logic side operating voltage 3.3 to 5 V
• Green LEDs for outputs on/off status (J6 and J7 close 1-2, 3-4, 5-6, 7-8)
• Red LED for common overheating and communication error diagnostic (J3 close 1-2)
• Red LED for PGOOD signalization (J3 close 3-4)
• Yellow LED for output enable status signalization (J3 close 5-6)
• Process and logic supply rails reverse polarity protections
• Compatible with STM32 Nucleo development boards
• Equipped with Arduino® UNO R3 connectors
• RoHS and China RoHS compliant
• CE certified
• Radiated emission: class B according to the standard EN 55032
UM3138
Getting started
UM3138 - Rev 1 page 2/19

1.2 Digital section
The digital section is associated with the STM32 interface and the digital supply voltage to and from the STEVAL-
IFP048V1 expansion board.
Figure 2. STEVAL-IFP048V1 expansion board: digital interface section
The dotted green line indicates the whole digital interface section. The pink rectangles identify the Arduino® UNO
R3 connectors.
The four Arduino® UNO R3 connectors:
• allow the expansion board to communicate with the STM32 Nucleo development microcontroller board
accessing the STM32 peripheral and GPIO resources;
• provide the digital supply voltage between the STM32 Nucleo development board and the STEVAL-
IFP048V1 expansion board, in either direction.
Usually, the STM32 Nucleo development board supplies the expansion board by a 3.3 V or 5.0 V generated by
the USB.
Alternatively, it is possible to supply the STM32 Nucleo development board from the expansion board. In this
case, an external supply voltage (7-12 V) should be connected to the CN11 connector (not mounted by default)
on the expansion board and the ground loop should be closed by mounting D2 (enabling the reverse polarity
protection) or by closing J5 (without reverse polarity). In this scenario, the logic side of the ISO808A-1 can be
supplied by the 3.3 V supply rail generated by the expansion board: in this case, on the STEVAL-IFP048V1, J4
must be closed between pins 5 and 6.
To supply the VIN voltage rail, it is necessary to:
• close the JP5 jumper between pins 2 and 3 and open the JP1 jumper on the NUCLEO-F401RE;
• open the JP5 jumper between pins 1 and 2 and close the JP5 jumper between pins 3 and 4 on the
NUCLEO-G431RB.
The pin 3 of the connector CN11 can be used to supply the logic side of the ISO808A-1 independently by the
expansion board. In this case, on the STEVAL-IFP048V1, the pins 1 and 2 of J4 must be closed (pins 5-6 open).
UM3138
Digital section
UM3138 - Rev 1 page 3/19

1.3 Power section
The power section involves the power supply voltage (CN1, pin 1 for VCC, pin 2 for GND), the load connection
(eight loads can be connected between each pin of CN2, CN3, CN4, and CN12 and pin 2 of CN1), EMC
protections (U2), and supply reverse polarity protection (D1).
Figure 3. STEVAL-IFP048V1 expansion board: power section
1. ISO808A-1
2. Output and power supply connector
3. Output channels - green LEDs
4. Status (overtemperature) red LED
5. Output Enable yellow LED
6. Power Good - red LED
For EMC:
• the SM15T39CA transient voltage suppressor (U2), enabled by closing J9, is placed between VCC and
GND tracks to protect the ISO808A-1 against surge discharge on the supply rail path up to ±1 kV/2 Ω
coupling;
• in the common mode surge testing, two single-layer capacitors (C11 and C12 - not included) must be
soldered at the predisposed locations;
• the ISO808A-1 output stages do not require additional EMC protections with respect to the IEC61000-4-2,
IEC61000-4-3, IEC61000-4-4, IEC61000-4-5, IEC61000-4-8 standards.
The EMC performance of the STEVAL-IFP048V1 is detailed below:
• for emission (when the DC input port of the board is powered by an AC-DC, DC-DC or battery with a cable
that does not exceed a three-meter length), compliance with standards:
– EN IEC 61000-6-3:2021
– EN 55032:2015 +A1:2020
• for immunity, compliance with standards:
– EN IEC 61000-6-1:2019
– EN 55035:2017 +A11:2020
UM3138
Power section
UM3138 - Rev 1 page 4/19

1.4 Hardware requirements
The STEVAL-IFP048V1 expansion board is designed to be used with the NUCLEO-F401RE or NUCLEO-
G431RB STM32 Nucleo development boards.
To function correctly, the STEVAL-IFP048V1 must be plugged onto the matching Arduino® UNO R3 connector
pins on the STM32 Nucleo board as shown below.
Figure 4. STEVAL-IFP048V1 and STM32 Nucleo stack
1.5 System requirements
To use the STM32 Nucleo development boards with the STEVAL-IFP048V1 expansion board, you need:
• a Windows PC/laptop (Windows 7 or above)
• a type A to mini-B USB cable to connect the STM32 Nucleo board to the PC when using a NUCLEO-
F401RE development board
• a type A to micro-B USB cable to connect the STM32 Nucleo board to the PC when using a NUCLEO-
G431RB development board
• the X-CUBE-IPS firmware and software package installed on your PC/laptop
UM3138
Hardware requirements
UM3138 - Rev 1 page 5/19

1.6 Board setup
Step 1. Connect the mini-USB or micro-USB cable to your PC to use the STEVAL-IFP048V1 with NUCLEO-
F401RE or NUCLEO-G431RB development board.
Step 2. Download the proper firmware (.bin) onto the STM32 Nucleo development board microcontroller
through the STM32 ST-LINK utility, STM32CubeProg, and according with information detailed in the
table below. The STEVAL-IFP048V1 can be used to control the ISO808A-1 device in three different
modes available for the user in three different example projects: Regular_8_Channels (standalone
board, default hardware configuration), Regular_16_Channels (two stacked independent boards, one
needs to be reworked as in hardware Regular_16_Channels configuration) and DaisyChain (two
stacked boards both reworked as in hardware Daisy chain configuration). The binary files provided with
the X-CUBE-IPS software package enable the user to choose the preferred control mode by selecting
the binary file contained in the proper example project binary folder, as reported in the following table.
Table 1. Nucleo development boards binary files
Nucleo board Binary path
NUCLEO-F401RE
Projects\STM32F401RE-Nucleo\Examples\OUT14A1\DaisyChain\Binary\DaisyChain.bin
Projects\STM32F401RE-
Nucleo\Examples\OUT14A1\Regular_8_Channels\Binary\Regular_8_Channels.bin
Projects\STM32F401RE-
Nucleo\Examples\OUT14A1\Regular_16_Channels\Binary\Regular_16_Channels.bin
NUCLEO-
G431RB
Projects\STM32G431RB-Nucleo\Examples\OUT14A1\DaisyChain\Binary\DaisyChain.bin
Projects\STM32G431RB-
Nucleo\Examples\OUT14A1\Regular_8_Channels\Binary\Regular_8_Channels.bin
Projects\STM32G431RB-
Nucleo\Examples\OUT14A1\Regular_16_Channels\Binary\Regular_16_Channels.bin
Note: Additional details on each hardware configuration are available inside the X-CUBE-IPS software
package as reported in the below table:
Table 2. Additional information on board configuration
Board configuration Readme file
DaisyChain Examples\OUT14A1\DaisyChain\readme.html
Regular_8_Channels Examples\OUT14A1\Regular_8_Channels\ readme.html
Regular_16_Channels Examples\OUT14A1\Regular_16_Channels\ readme.html
Step 3. Connect the ISO808A-1 device supply voltage via CN1 (see Section 1.3 Power section).
Step 4. Provide the digital supply voltage (see Section 1.2 Digital section).
Step 5. Connect the load on the output connector (see Section 1.3 Power section).
Step 6. Reset the example sequence by pushing the black button on the STM32 Nucleo board.
Step 7. Push the blue button on the STM32 Nucleo board to choose among the examples provided in the
default firmware package.
UM3138
Board setup
UM3138 - Rev 1 page 6/19

2 Schematic diagrams
Figure 5. STEVAL-IFP048V1 circuit schematic (1 of 2)
ISO808AQTR-1 direct supply voltage:
- set to max 3.3 V
when STEVAL-IFP048V1 is used with NUCLEO board
- can be set to max 5.5 V
when STEVAL-IFP048V1 is used stand-alone
( 7-12 V NUCLEO supply voltage)
Analog supply
1 0-36 V
Morpho connectors
( Not mounted )
DEFAULT
PA5
PA1
Alternate use
PA10
PB10
Alternate use
PC1
PB0
Alternate use
I OREF
AVDD
Alternate use
PA9
PC7
DEFAULT
PB9
PA3
DEFAULT
Arduino connectors
Alternate use
PA0
PA6
Alternate use
PB4
PA4
DEFAULT
PA7
Alternate use
PB6
PB3
PB5
PA8
DEFAULT
Alternate use
PB8
Alternate use
PA2
NRST
PC0
Alternate use
Alternate use
Alternate use
DEFAULT
DEFAULT
VCC
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
OUT8
SPI_CLK
SPI_MISO
SPI_MOSI
SPI_SS
PGOOD
DaisyChain
STATUS
OUT_EN
EXT_Vdd
3v3 5v0 CN5
SSQ-110-04-F-S
1
2
3
4
5
6
7
8
9
10
C12
4700pF
N.M.
C11
4700pF
N.M.
R103 100
+ C9
47uF
N.M.
12
CN10
SSQ-119-04-L-D
N.M.
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
U3
ESDA15P60-1U1M
N.M.
R108 100
C10
2.2uF
J5
JUMPER-con2-strip-male
N.M. default open
U2
SM15T39CA
12
CN11
691214110003
N.M.
1
2
3
R113 100 N.M.
R106 100
CN8
SSQ-106-04-F-S
1
2
3
4
5
6
CN2
691214110002
1
2
R115 100 N.M.
R117 100 N.M.
CN12
691214110002
1
2
R107 100
J10
default open
R120 100 N.M.
R104 100
D1 STPS1H100A
CN1
691214110002
1
2
CN9
SSQ-108-04-F-S
1
2
3
4
5
6
7
8
TP8
5001
CN3
691214110002
1
2
CN4
691214110002
1
2
CN6
SSQ-108-04-F-S
1
2
3
4
5
6
7
8
D2 BAT48JFILM
N.M.
R111 100 N.M.
R114 100 N.M.
R116 100 N.M.
R118 100 N.M.
CN7
SSQ-119-04-L-D
N.M.
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
R105 100
D12
ESDA7P60-1U1M
N.M.
R119 100
R101 100 N.M.
J9
default closed
R112 100 N.M.
R102 100 N.M.
R109 100 N.M.
EARTH
STATUS
PGOOD
3V3
5V SPI_CLK
SPI_MISO
SPI_MOSI
VIN SPI_SS
DaisyChain
DaisyChain
VIN
SPI_CLK
SPI_MISO
SPI_MOSI
SPI_SS SPI_SS
STATUS
PGOOD DaisyChain PGOOD
OUT_EN PGOOD
SPI_SS DaisyChain
DaisyChain OUT_EN
STATUS STATUS
OUT_EN
OUT_EN
UM3138 - Rev 1 page 7/19
UM3138
Schematic diagrams

Figure 6. STEVAL-IFP048V1 circuit schematic (2 of 2)
VCC
OUT1
OUT2
OUT_EN
OUT3
SPI_SS
SPI_CLK
OUT4
SPI_MOSI
OUT5
PGOOD
OUT6
SPI_MISO
DaisyChain OUT7
OUT8
OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 OUT8
STATUS
EXT_Vdd
3v3
R27
15k
R11 390
R9 390
R20 22k
R28
15k
R3 0
D13
SMBJ5.0A-TR
C5 10nF
J7
con8-2x4-strip-male
J7 default: close 1-2, 3-4, 5-6, 7-8
12 34 56 78
R1 390
J13
con4-2x2-strip-male
default close 1-2
1 2
3 4
R2 0
R14 22k
R29
15k
R8 390
C3 10nF
C2 10nF
C4 10nF
D15
LED YELLOW
AC
R15
1k
C7 10nF
R30
15k
D16
RED LED
AC
D10
LED GREEN
AC
C24 33pF
C1 10nF
C23 33pF
C26
0.1uF
C6 10nF
D11
RED LED
AC
D9
LED GREEN
AC
R17
390
D8
LED GREEN
AC
C22 33pF
J12
con4-2x2-strip-male
default close 1-2
1 2
3 4
C25
2.2uF
R25
15k
J6
con8-2x4-strip-male
J6 default: close 1-2, 3-4, 5-6, 7-8
12 34 56 78
D7
LED GREEN
AC
R18
15k
C21 33pF
R121
1k
D6
LED GREEN
AC
C14 33pF
R10 390
U1
ISO808AQTR-1
GNDdd
1
NC#2
2 3
GND1
OUT8a 4
OUT8b 5
OUT7a 6
OUT7b 7
OUT6a 8
OUT6b 9
OUT5a 10
OUT5b 11
OUT4a 12
OUT4b 13
OUT3a 14
OUT3b 15
OUT2a 16
OUT2b 17
OUT1a 18 OUT1b 19
Vdd 20
OUT EN
21
SS
22
CLK
23
SDI
24
PGOOD
25
NC#26
26
NC#27
27
NC#28
28
NC#29
29
NC#30
30
SDO
31
FAULT
32
36
TAB Vcc
33
GND2
34
GND3
35
GND4
J4
con6-2x3-strip-male
default: close 5-6
1 2
3 4
5 6
R26
15k
D5
LED GREEN
AC
R19
15k
J3
con6-2x3-strip-male
default: close 1-2, 3-4, 5-6
1 2
3 4
5 6
D4
LED GREEN
AC
C8 10nF
C13
0.1uF
D3
LED GREEN
AC
SPI_MOSI
DaisyChain
SPI_MISO
DaisyChain
UM3138 - Rev 1 page 8/19
UM3138
Schematic diagrams

3 Bill of materials
Table 3. STEVAL-IFP048V1 bill of materials
Item Q.ty Ref. Part/value Description Manufacturer Order code
18C1 C2 C3 C4
C5 C6 C7 C8
10nF 0603
(1608 Metric)
50V 10%
CAP CER
10000PF 50V
X7R 0603
Wurth
Electronics Inc. 885382206002
2 0 C9 47uF Radial,
Can 100V 20%
CAP 47 UF
20% 100 V (not
mounted)
Wurth
Electronics Inc. 860040875002
3 1 C10
2.2uF 1206
(3216 Metric)
100V 10%
CAP CER
2.2UF 100V
X7R 1206
AVX
Corporation 12061C225KAT2A
4 0 C11 C12
4700pF 1825
(4564 Metric)
3000V (3kV)
10%
CAP CER
4700PF 3KV
X7R 1825 (not
mounted)
Vishay Vitramon HV1825Y472KXHATHV
5 2 C13 C26
0.1uF 0805
(2012 Metric)
100V 10%
CAP CER
0.1UF 100V
X7R 0805
Wurth
Electronics Inc. 885012207128
65C14 C21 C22
C23 C24
33pF 0402
(1005 Metric)
10V 5%
CAPACITOR
CERAMIC SMD
0402
Wurth
Electronics Inc. 885012005010
7 1 C25
2.2uF 0402
(1005 Metric)
10V 20%
CAP CER
2.2UF 10V X5R
0402
Wurth
Electronics Inc. 885012105013
85CN1 CN2 CN3
CN4 CN12
691214110002
7.4X7 pitch 3.5
TERM BLK
2POS SIDE
ENT 3.5MM
PCB
Wurth
Electronics Inc. 691214110002
9 1 CN5 10 ways, 1 row
CONN RCPT
10POS 0.1
GOLD PCB
SAMTEC
4UCON ESQ-110-14-T-S 17896
10 2 CN6 CN9 8 ways, 1row
CONN RCPT
8POS 0.1
GOLD PCB
SAMTEC
4UCON ESQ-108-14-T-S 15782
11 0 CN7 CN10
CONN RCPT
38POS 0.1
GOLD PCB (not
mounted)
Samtec Inc. SSQ-119-04-L-D
12 1 CN8 6 ways, 1 row
CONN RCPT
6POS 0.1
GOLD PCB
SAMTEC
4UCON ESQ-106-04-T-S 15781
13 0 CN11
691214110003
10.5X7.4 pitch
3.5mm
TERM BLK
3POS SIDE
ENT 3.5MM
PCB (not
mounted)
Wurth
Electronics Inc. 691214110003
14 1 D1
STPS1H100A
DO-214AC,
SMA 1A
DIODE
SCHOTTKY
100V 1A SMA
ST STPS1H100A
15 0 D2
BAT48JFILM
SC-76,
SOD-323
750mV @
200mA 350mA
(DC)
DIODE
SCHOTTKY
40V 350MA
SOD323 (not
mounted)
ST BAT48JFILM
UM3138
Bill of materials
UM3138 - Rev 1 page 9/19

Item Q.ty Ref. Part/value Description Manufacturer Order code
16 8 D3 D4 D5 D6
D7 D8 D9 D10
LED GREEN
0603 (1608
Metric) 20mA
LED GREEN
CLEAR 0603
SMD
Wurth
Electronics Inc. 150060VS75000
17 2 D11 D16
RED LED 0603
(1608 Metric)
20mA
LED RED
CLEAR 0603
SMD
Wurth
Electronics Inc. 150060RS75000
18 0 D12 ESDA7P60-1U1
M 2-UDFN
TVS DIODE
5VWM 11.6VCL
1610 (not
mounted)
ST ESDA7P60-1U1M
19 1 D13
SMBJ5.0A-TR
DO-214AA,
SMB 600W
TVS DIODE 5V
13.4V SMB ST SMBJ5.0A-TR
20 1 D15
LED YELLOW
0603 (1608
Metric) 20mA
LED YELLOW
CLEAR 0603
SMD
Wurth
Electronics Inc. 150060YS75000
21 1 J3 con6-2x3-strip-
male
CONN
HEADER .100
DUAL STR
6POS
Wurth
Electronics Inc. 61300621121
22 1 J4 con6-2x3-strip-
male
CONN
HEADER .100
DUAL STR
6POS
Wurth
Electronics Inc. 61300621121
23 0 J5 JUMPER-con2-
strip-male
JUMPER-
CONN
HEADER .100
STR 2POS (not
mounted)
Wurth
Electronics Inc. 61300211121
24 2 J6 J7 con8-2x4-strip-
male
CONN
HEADER VERT
8POS 2.54MM
Wurth
Electronics Inc. 61300821121
25 2 J9 J10 JUMPER-con2-
strip-male
JUMPER-
CONN
HEADER .100
STR 2POS
Wurth
Electronics Inc. 61300211121
26 2 J12 J13 con4-2x2-strip-
male
CONN
HEADER .100
DUAL STR
4POS
Wurth
Electronics Inc. 61300421121
27 5 R1 R8 R9 R10
R11
390 0402 (1005
Metric) 0.1W,
1/10W 5%
CHIP
RESISTOR
SMD 5% 1/10W
0402
Panasonic ERJH2GJ391X
28 2 R2 R3
0 0402 (1005
Metric) 0.1W,
1/10W 0%
CHIP
RESISTOR
SMD 0% 1/10W
0402
Panasonic ERJH2G0R00X
29 2 R14 R20
22k 0603 (1608
Metric) 0.1W,
1/10W 1%
RES SMD 22K
OHM 1% 1/10W
0603
Yageo RC0603FR-0722KL
30 1 R17
390 0603 (1608
Metric) 0.1W,
1/10W 1%
RES SMD 390
OHM 1% 1/10W
0603
Yageo RC0603FR-07390RL
31 2 R15 R121
1k 0603 (1608
Metric) 0.1W,
1/10W 1%
RES SMD 1K
OHM 1% 1/10W
0603
Yageo RC0603FR-071KL
UM3138
Bill of materials
UM3138 - Rev 1 page 10/19