Page 1
UM2293
User manual
Getting started with the STEVAL-ISC004V1 evaluation board for the
STUSB4710A USB PD controller with on-board DC-DC
Introduction
The STEVAL-ISC004V1 evaluation board is a ready-to-use USB PD source based on STUSB4710A and ST1S14 ICs. It
demonstrates how to convert a fixed voltage DC power input into a USB PD variable voltage output.
The STUSB4710A acts as a T
converter and power paths, and monitors V
The ST1S14 device manages the step down conversion from the DC input port to the negotiated V
The various LEDs indicate the operating status of the STUSB4710A and USB PD port.
The USB PD port is pre-configured with five different PDOs to address a broad range of applications (5 V, 9 V, 12 V, 15 V and
20 V).
ype-C port interface that ensures power delivery advertising and negotiation, drives the DC-to-DC
voltage.
BUS
voltage.
BUS
Figure 1. STEVAL-ISC004V1 evaluation board
UM2293 - Rev 2 - May 2019
For further information contact your local STMicroelectronics sales office.
www
.st.com
Page 2
1 USB PD board overview
The STEVAL-ISC004V1 USB Type-C™ port is pre-configured with 5 PDOs at fixed voltage node (5 V, 9 V, 12 V,
15 V and 20 V).
The ST1S14 DC-DC is used as a step-down converter
The STEV
• 1 x USB PD port (source)
• STUSB4710A USB power delivery controller
• Compliant with:
• On-board DC-DC
• V
• Support for up to 5 power data objects (PDO)
• Short-to-V
• Customizable start-up profiles
• Compatible with NUCLEO-F072RB board for configuration and debug interface
• RoHS compliant
AL-ISC004V1 evaluation board features:
– USB Type-C r1.2
– USB PD r2.0
power switches and discharge path
BUS
protections on CC pins (22 V) and V
BUS
.
BUS
UM2293
USB PD board overview
pins (28 V)
1.1 How to use the board
Step 1. Connect a DC source with a minimum voltage of 22 V to either J0 DC socket or pins J0-A and J0-B.
Step 2. Connect the T
C cable. The green LED D12 lights up when a device is connected and the VBUS supply is present.
D12 lighting intensity changes according to the VBUS voltage value.
The STUSB4710A I²C interface can be used to customize application parameters: PDO, VBUS under
and overvoltage limits, VBUS discharge time, etc.
ype-C receptacle J2 to any device with a USB T
Figure 2. STEVAL-ISC004V1 functional diagram
ype-C port using a USB Type-C to Type-
UM2293 - Rev 2
page 2/14
Page 3
UM2293
How to use the board
Figure 3. STEV
AL-ISC004V1 connected to PNUCLEO-USB001 as a sink
UM2293 - Rev 2
page 3/14
Page 4
2 Schematic diagram
GND
FB
PG
Small signal
Power plane
GND
VIN OUT-ST1
GND
GND
ALERT#
RESET
STM32_P
STM32_N
3V3_Nuc 5V_Nuc
P1 P2
P6
P10
P13
P1
P2P6P10
P13
GND GND
3V3_Nuc
5V_Nuc
3V35V
GND
J0
J0-A
VIN
J0-B
GND
C2
10µF
C2'
10µF
C3
220nF
C1 100nF
Boot
1
Vin
7
GND
6
EN25/EN1
3
FB
4
PG
2
SW
8
U2
ST1S14PHR
D1
STPS5L25B
J1-A
Vsrc
L1 68µH
R2
200K
C4 100pF
C4'
NC
+
C5a
220µF
C5b
22µF
R1
NC
D3
NM
R33
2k2
R34
2k2
3V3 3V3
SCL
SDA
R3
13k
R4
4k7
R5
4k87
R6
8k66
R7
33k
ME-03
ME-01 ME-05
ME-06
VSel_20V
VSel_15V
VSel_12V
VSel_9V
D51
1N4004
GND
A1
Tx+1A2Tx-1
A3
Vbus
A4
CC1
A5
D+1A6D-1
A7
Sbu1
A8
Vbus
A9
Rx-2
A10
Rx+2
A11
GND
A12
GND
B1
Tx+2
B2
Tx-2
B3
Vbus
B4
CC2
B5
D+2
B6
D-2
B7
Sbu2
B8
Vbus
B9
Rx-1
B10
Rx+1
B11
GND
B12
TYPE C
USB 3.1
J2
C51
10µF
tcD_N
tcD_P
RD1
200
GND
GND
tcD_N
tcD_P
tcD_N
tcD_P
CC1
CC2
GND GND
SB7
SB8
P1
P2P6P10
P13
SB1
SB2
SB6
SB10
SB13
VBUS
1
D-
2
D+
3
GND
5
ID
4
J55
Micro B
C55 4.7nF
C56
1µF
I/O1
GND
I/O2I/O2
Vbus
I/O1
U55
USBLC6
5V
GND
D_N
D_P
STM32_N
STM32_P
GND
R55 1M
J1
R61
4k7
LD62
LD61
R62
4k7
GND GND
3V3
GND
GND
IN OUT
U3
TLV70133
D2
C8
1µF
C9
10µF
Vsrc
Vsrc
GND
T45
R46
3k9
R45
150k
LD12
Vbus
Vbus
C5c 1µF
VSel_PDO5
VSel_PDO4
VSel_PDO3
VSel_PDO2
VDD
24
VReg_2V7
23
VReg_1V2
21
VBUS_DISCH
19
VBus_EN_SRC
20
SCL7SDA8Addr0
13
SEL_PDO212SEL_PDO3
11
SEL_PDO414SEL_PDO5
15
GND
10
CC24CC1
2
VBus_Sense
18
ExpPAD
0
U1A
STUSB4710A
SCL
SDA
R51
NC
2V7
GND GND
GND
GND
1V22V7
C6 1µF
C7 1µF
R52
100k
J50
CC
GND
D52
ESDA25L
CC1
CC2
HC
GND
T35
STR2P3LLH6
R36
10k
R35
820
R42
22k
R41
47k
T41A
Si4925DDY
T41B
Si4925DDY
VBus_EN_SRC
VBus_DISCH
GND
J2-B
GND
J2-A
Vbus
Power Control
Vbus
USB-Nucleo Interface for I2C Access
5V
Autonomous USB PD controller
with integrated discharge path
UM2293
Schematic diagram
UM2293 - Rev 2
Figure 4. STEV
AL-ISC004V1 circuit schematic
page 4/14
Page 5
3 Bill of materials
Item Q.ty Ref. Part/Value Description Manufacturer Order code
1 1 C1
2 3
3 1 C3
4 1 C4
5 1 C5a
6 1 C5b
7 4
8 1 C9
9 1 C55
10 1 C56
11 2 D0, D51
12
13
14 1 D12 1.6 x 0.8 mm Green LED, 0603 Würth Elektronik 150060VS75000
15 1 D52 25V
16 1 D61 1.6 x 0.8 mm Yellow LED, 0603 Würth Elektronik 150060YS75000
17 1 D62 1.6 x 0.8 mm Red LED, 0603 Würth Elektronik 150060RS75000
18 1 J0 2.5x5.5mm
19 6
C2, C2',
C51
C5c,
C6, C7,
C8
1 D1 60 V, 3 A
1 D2 40V, 300mA
J0-A,
J0-B,
J1-A,
J2-A,
J2-B,
J50
Table 1. STEVAL-ISC004V1 bill of materials
100nF, 50V
±10%
10µF, 25V
±20% 1206
220nF, 100V
±10% 1206
100pF, 50V
±5%
220µF 35V
±20%
22µF, 25V
±20%
1µF, 50V
±20%
10µF, 16V
±20%
4.7nF, 50V
±10%
1µF, 25V
±20%
22V, Vbr =
24.6
1x2, 2.45mm
pitch
Capacitor X7R
0603
Capacitor X5R
1206
Capacitor X7R
1206
Capacitor COG
0603
Capacitor Electro
P 3.5mm D 8mm H
1
1.5mm
Capacitor X5R
1210
Capacitor X7R
0805
Capacitor X5R
0805
Capacitor X7R
0603
Capacitor X5R
0603
High power
transient voltage
suppressor
QFN1610
Schottky Diode,
SMT, DO-214AA
Small signal
Schottky diode,
SOD123
Dual Transil Array
For ESD
Protection, SOT
23-3L
Right Angle PC
Mount DC Power
Jack, pin size 2.5
2-position
connector; header;
through hole
,
Würth Elektronik 885012206095
Würth Elektronik 885012108021
Würth Elektronik 885012208089
Würth Elektronik 885012006057
Würth Elektronik
Würth Elektronik 885012109014
Würth Elektronik 885012207103
Würth Elektronik 885012107014
Würth Elektronik 885012206087
Würth Elektronik 885012106022
ST ESDA25P35-1U1M
ST STPS3L60U
ST BAT54ZFILM
ST ESDA25L
Würth Elektronik 694108301002
Würth Elektronik 61300211121
UM2293
Bill of materials
860020574012
UM2293 - Rev 2
page 5/14
Page 6
Bill of materials
Item Q.ty Ref. Part/Value Description Manufacturer Order code
20 1 J1
21 1 J2
22 1 J55
23 1 L1
ME-01,
24 4
25 1 R2 200K ±1% 0603 SMD resistor - -
26 1 R3 13k ±1% 0603 SMD resistor - -
27 1 R4 4k7 ±1% 0603 SMD resistor - -
28 1 R5 4k87 ±1% 0603 SMD resistor - -
29 1 R6 8k66 ±1% 0603 SMD resistor - -
30 1 R7 33k ±1% 0603 SMD resistor - -
31 3
32 1 R35 820 ±5% 0805 SMD resistor - -
33 1 R36 10k ±5% 0603 SMD resistor - -
34 1 R41 47k ±5% 0603 SMD resistor - -
35 1 R42 22k ±5% 0603 SMD resistor - -
36 1 R45 150k ±5% 0603 SMD resistor - -
37 1 R46 3k9 ±5% 0603 SMD resistor - -
38 1 R52 100k ±5% 0603 SMD resistor - -
39 1 R55 1M ±5% 0603 SMD resistor - -
40 1 R62 4k7 ±5% 0603 SMD resistor - -
41 1 RD1 200 ±5% 0603 SMD resistor - -
42 5
43
44 1 T41 30V
ME-03,
ME-05,
ME-06
SB8,
SB1
SB15,
SB21,
SB25
1 T35
2x8, 0.100"
(2.54mm)
USB 3.1 Type
C
USB 2.0 Type
Micro B
68µH, 3.2A,
0.089Ω,
12x12x10mm
M3 and 20mm
Spacer
R33,
R34,
2k2 ±5% 0603 SMD resistor - -
R61
1,
0 ±5%
-30V, 0.048Ω
typ., -2A
16-position
receptacle
connector, through
hole gold
Receptacle
Horizontal THR
WR-COM 1.6mm
PCB thickness,
SMT
SMT Horizontal 5
Contacts
Inductor Würth Elektronik 7447709680
Screw - -
0603 SMD resistor
0R
P-channel
STripFET™ H6
Power MOSFET
SOT 23-3L
Dual P-Channel
(D-S) MOSFET,
SO 8
Würth Elektronik
Würth Elektronik 632723300011
Würth Elektronik 629105136821
- -
ST STR2P3LLH6
,
V
ishay Siliconix Si4925DDY
61301621821
UM2293
UM2293 - Rev 2
page 6/14
Page 7
Bill of materials
Item Q.ty Ref. Part/Value Description Manufacturer Order code
45 1 T45 60V, 300mA
46
47 1 U2
48
49 1 U55 -
1 U1 -
3A out,
5.5V
-48V in
1 U3
24V in,
150mA, 3V3
N-channel Trench
MOSFET, SOT
23-3L
Autonomous USB
PD controller with
integrated
discharge path in
QFN24 4x4mm
step-down
switching
regulator, HSOP-8
Ultralow IQ LowDropout Regulator,
SOT 23-5L
Very low
capacitance ESD
protection, SOT
23-6L
- 2N7002
ST STUSB4710AQTR
ST ST1S14PHR
T
exas Instruments TLV70133DBVT
ST USBLC6-2SC6
UM2293
UM2293 - Rev 2
page 7/14
Page 8
4 Board layout
UM2293
Board layout
Figure 5. STEV
Figure 6. STEVAL-ISC004V1: bottom layer
AL-ISC004V1: top layer
UM2293 - Rev 2
page 8/14
Page 9
UM2293
Board layout
Figure 7. STEV
Figure 8. STEV
AL-ISC004V1: top silkscreen
AL-ISC004V1: bottom silkscreen
UM2293 - Rev 2
page 9/14
Page 10
UM2293
Layout constraints
Figure 9. STEV
Figure 10. STEVAL-ISC004V1: bottom assembly
AL-ISC004V1: top assembly
4.1 Layout constraints
As the VBUS path can carry up to 3 A, power track between DC-DC, Power MOS and Type-C connector is large
enough.
Special care must be taken for DC-DC layout and thermal dissipation.
The STUSB4710A monitors VBUS and discharges the path. The monitoring signal should be separated from the
power signal and QFN exposed pad must be connected to global GND plane through vias to allow thermal
conduction.
UM2293 - Rev 2
page 10/14
Page 11
5 Board customization
5.1 Power delivery through STUSB4710A and DC-DC regulator
STUSB4710A advertises the voltage/current couple capability on the CC line (power delivery objects or PDO).
Each object is linked to a VSEL_PDO signal which controls the DC-DC converter
When a contract is negotiated with the sink device connected to the Type-C connector
corresponding to the selected power object is tied low.
The equivalent resistor bridge of the DC-DC controller must be set to match the output voltage with the selected
PDO.
STUSB4710A monitors the VBUS voltage and disconnects the sink device when the voltage is not in the correct
range.
5.2 Software configuration
The STUSB4710A settings are stored in non-volatile memory (NVM), accessible through I²C.
STMicroelectronics provides a graphical user interface for evaluation purposes to program this memory via PC.
The STEV
AL-ISC004V1 PDO memory settings must be aligned with the hardware resistor configuration.
.
UM2293
Board customization
, the VSEL signal
5.3 Hardware configuration
The buck application delivers 5 output voltages by default. The output voltages can be customized by changing
R2, R3, R4, R5, R6 and R7 resistor values.
The STUSB4710A controls the output voltage through 4 GPIOs which change the voltage divider ratio on the
basis of the feedback signal to the buck controller.
According to the voltage tuning, the voltage divider based on R2, R3, R4, R5, R6 and R7 resistors has to be
tuned accordingly
.
Figure 1
1. STUSB4710A NVM settings
5.4 Voltage output trimming
The output voltage control is based on the voltage divider variation. Each time a PDO is modified, the set of R3,
R4, R5, R6 and R7 resistors has to be modified accordingly
Note:
UM2293 - Rev 2
R2 is fixed at 200 k for the ST1S14.
Firstly, you have to calculate the resistor associated with the divider ratio for each output voltage:
.
page 11/14
Page 12
UM2293
Voltage output trimming
RA=
R2∙ 1.22
V
OU
− 1.22
T
200 ∙ 1.22
=
5 − 1.22
=
64550Ω (1)
To limit the error propagation, the resistor computation should start from the highest voltage to the lowest one by
integrating the previous computation at each step.
R2∙ 1.22
R3=
R4=
V
R2∙ 1.22
R5=
V
OU
R2∙ 1.22
R6=
V
T
OU
R2∙ 1.22
R7=
Table 2. STEV
− 1.22
V
T
OU
AL-ISC004V1 default resistors
Theoretical value (Ω)
R2∙ 1.22
Vbus (V)
5
R
A
64550 13k0 4k7 4k87 8k66 33k0
R =
V
− 1.22
OUT
R
B
R
C
9 31362 13k0 4k7 4k87 8k66
12 22634 13k0 4k7 4k87
15 17707 13k0 4k7
20 12992 13k0
− 1.22
V
T
OU
R2∙ 1.22
T
OU
− 1.22
T
− 1.22
− R
− 1.22
− R3− R
− R3− R4− R
− R3− R4− R5− R
R
D
R
3
4
5
6
Real resistor value in 1% series
E
R
R
3
R
4
5
R
6
R
7
(2)
(3)
(4)
(5)
(6)
UM2293 - Rev 2
page 12/14
Page 13
Revision history
03-Oct-2017 1 Initial release.
13-May-2019 2
UM2293
Table 3. Document revision history
Date Version Changes
Updated Section 3 Bill of materials
Formatting updates throughout document
UM2293 - Rev 2
page 13/14
Page 14
UM2293
IMPORTANT NOTICE – PLEASE READ CAREFULLY
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Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of
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No license, express or implied, to any intellectual property right is granted by ST herein.
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names are the property of their respective owners.
Information in this document supersedes and replaces information previously supplied in any prior versions of this document.
ferent from the information set forth herein shall void any warranty granted by ST for such product.
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. All other product or service
UM2293 - Rev 2
page 14/14
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