STEVAL-IFP020V1
PLC (for industrial automation) digital output solution using a
2.5 A single high-side smart power switch based on the L6370Q
Features
■ Single-channel topology
■ Galvanic isolation
■ 2.5 A output current
■ 9.5 V to 35 V supply voltage range
■ Short-circuit, overload, and thermal protections
■ Loss of ground and V
■ Fast demagnetization of inductive loads
■ Open load, output short to V
■ Two diagnostic outputs
■ Output status LED driver
■ EMC immunity against burst, surge, and ESD
■ RoHS compliant
protections
S
detection
S
STEVAL-IFP020V1
Data brief
Description
The STEVAL-IFP020V1 demonstration board is
based on the L6370Q, a single-channel high-side
driver chip intended for driving resistive, inductive
or capacitive loads in an industrial environment. It
provides an embedded fast demagnetization
feature for inductive load switch-off.
The device evaluates load disconnection (during
channel on-state), output short to V
overtemperature, undervoltage of supply voltage,
and provides feedback to a control unit.
Integrating an extensive set of electrical
protections makes the application safe and
reliable for use in harsh conditions.
The STEVAL-IFP020V1 demonstration board is
an example of application design using the
L6370Q. It is used to guide the designer in
choosing external components for applications
while providing an appropriate PCB design.
CC
or GND,
December 2011 Doc ID 022632 Rev 1 1/4
For further information contact your local STMicroelectronics sales office.
www.st.com
4
1 Schematic
Figure 1. STEVAL-IFP020V1 schematic
STEVAL-IFP020V1 Schematic
W1
5.08mm
10A
5
TP1
Vs
C1
C2
OUT
OUT
OUT
OUT
L6370Q
1
2
10
11
38
100uF
50V
OUTPUT
OUT-STAT
100nF
50V
TP2
0603
6
8
Vs
Vs7Vs
Vs
OUT-STATUS
TAB
GND
41
TAB
W2
2.54mm
1A
0603
D1
SM15T36A
C5
10nF
50V
LED1
GREEN
0805
TP4
AM045319v1
CN5
1
Earth
Vs
OPT1
1
4
R1
18K
0603
Vs
C3
4n7
3kV
C4
4n7
3kV
23
TLP281
R4
18K
C6
0603
180pF
50V0603
4
4
OPT2
TLP281
OPT3
TLP281
Earth
1
1
23
1
23
R8
3K3 0603
R9
3K3 0603
R11
3K3 0603
R12
3K3 0603
Vs
Vs
R5
470R
0603
TP3
TP5
TP6
R6
470R
0603
IN+
IN-
RSC
ON-DELAY
C7
680pF
50V0603
L6370Q_Vs
C8
100nF
50V
0603
L6370Q_GND
U1
33
34
22
4
28
29
L6370Q_Vs
IN+
IN-
RSC
ON-DELAY
DIAG1
DIAG2
L6370Q_GND
INPUT
DIAG1
DIAG2
V_Logic
C9
100nF
50V
0603
V_Logic
V_Logic
R2
470R 0603
R3
470R 0603
R7
10K
0603
R10
10K
0603
CN1
V_Logic
INPUT
DIAG1
1
2
34
56
78
910
11 12
13 14
DIAG2
MLW14G
3.3V/5V,
Doc ID 022632 Rev 1 2/4
TTL/CMOS
Compatible
Signals
INPUT
V_Logic
DIAG2
CN2
12
34
5
78
910
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
6
DIAG1
MLW34G
CN3
1
2
ARK128V-A-2P
CN4
1
2
ARK128V-A-2P
CN6
STEVAL-IFP020V1 Revision history
2 Revision history
Table 1. Document revision history
Date Revision Changes
22-Dec-2011 1 Initial release.
Doc ID 022632 Rev 1 3/4
STEVAL-IFP020V1
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4/4 Doc ID 022632 Rev 1
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