dm00051126

AN4075
Application note
STEVAL-IFP016V2 IO-Link communication master transceiver
demonstration board
By Gaetano Rinaldi
Introduction
The STEVAL-IFP016V2 demonstration board works as an IO-Link communication master
transceiver. In combination with the STEVAL-PCC009V2 or STEVAL-PCC009V1
demonstration board, the application can evaluate all the features of the L6360 IC.
The L6360 is a monolithic IO-Link master port, compliant with PHY2 (3 wires) supporting
COM1 (4.8 kbaud), COM2 (38.4 kbaud) and COM3 (230.4 kbaud) modes.
The C/QO output stage (high-side, low-side or push-pull) as well as the cutoff current, cutoff
current delay time, and restart delay are programmable.
The cutoff current and cutoff current delay time, combined with the thermal shutdown and
automatic restart, protect the device against overload and short-circuit.
The C/QO and L+ output stages are able to drive resistive, inductive and capacitive loads.
Fast demagnetization on the L+ switch is able to dissipate the energy stored in the inductive
loads.
The supply voltage is monitored and low-voltage conditions are detected.
The L6360 transfers, through PHY2 (C/QO pin), data received from a host microcontroller to
USART (INC/QO pin), or transfers data received from PHY2 (C/Q I pin) to USART (OUTC/QI
pin). For more details on the complete system please refer to the application schematic.
To enable full IC control, configuration and monitoring (i.e. fault conditions stored in the
status register), the communication between the system microcontroller and the L6360 is
based on a fast mode, 2-wire I2C bus.
The L6360 has 9 registers to manage the programmable parameters and the status of the
IC.
Monitored fault conditions include L+ line, overtemperature, C/Q overload, linear regulator
undervoltage, and parity check.
Internal LED driver circuitries, in open-drain configuration, provide two programmable
sequences to drive two LEDs.
A large GND area on the printed circuit board has been designed in order to minimize noise
and ensure good thermal performance.
April 2012
Doc ID 022954 Rev 1
1/23
www.st.com
Contents
AN4075
Contents
1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2
Board description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3
Using STEVAL-IFP016V2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4
3.1
Connection to the STEVAL-PCC009V2 or STEVAL-PCC009V1
demonstration board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2
Basic supply protection circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.3
Independent VH pin supply vs. direct connection to VCC
3.4
IO-Link communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.5
Standard IO (SIO) protection circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Application EMC immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.1
Register values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.2
Burst test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.3
5
2/23
. . . . . . . . . . . . . . . . . 14
4.2.1
Test conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.2.2
Test signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.2.3
Test setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.2.4
Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
EMC IEC 61000-4-5 surge immunity test . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.3.1
Test conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.3.2
Test signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.3.3
Test setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.3.4
Test results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.3.5
Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Doc ID 022954 Rev 1
AN4075
List of tables
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Table 9.
STEVAL-IFP016V2 connector and jumper description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
STEVAL-IFP016V2 30-pin signal connector description . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
STEVAL-IFP016V2 electrical specifications (recommended values) . . . . . . . . . . . . . . . . . . 7
STEVAL-IFP016V2 component list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Application EFT (burst) immunity, applied to IO-Link lines
(L+, C/Q, I/Q, L-) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Application surge immunity - common mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Application surge immunity - differential mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Application supply surge immunity CM, DM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Doc ID 022954 Rev 1
3/23
List of figures
AN4075
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
4/23
STEVAL-IFP016V2 demonstration board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
STEVAL-IFP016V2 electrical schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
STEVAL-IFP016V2 component placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
STEVAL-IFP016V2 topside layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
STEVAL-IFP016V2 inner 1st layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
STEVAL-IFP016V2 inner 2nd layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
STEVAL-IFP016V2 bottomside layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
STEVAL-IFP016V2 supply protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
STEVAL-IFP016V2 VH supply protection vs. VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
L6360 communication interface suitable for IO-Link. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
STEVAL-IFP016V2 protection circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Doc ID 022954 Rev 1
AN4075
1
Features
Features
●
Supply voltage from 18 to 32.5 V
●
Fully protected, programmable output stages
●
Supports COM1, COM2 and COM3 mode
●
5 mA IO-Link digital input
●
Additional IEC61131-2 type-1 input
●
3.3 V / 5 V, 50 mA linear regulator
●
Fast mode I2C for IC control, configuration and diagnostic
●
Diagnostic dual-LED sequence generator and driver
●
5 V and 3.3 V compatible I/Os
●
Interface compatible with STEVAL-PCC009V2 and STEVAL-PCC009V1
●
EMC-immune application against ESD, burst, surge, RF noise, etc. according to
IEC61000-4-2, IEC61000-4-4, IEC61000-4-5, IEC61000-4-6 standards
Doc ID 022954 Rev 1
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Board description
2
AN4075
Board description
The STEVAL-IFP016V2 has external connectors for the supply voltage, two outputs (C/Q
and L+), one input (I/Q) and a 30-pin connector to control and program the main functions of
the board through an external demonstration board (STEVAL-PCC009V2 or STEVALPCC009V1).
6/23
Figure 1.
STEVAL-IFP016V2 demonstration board
Table 1.
STEVAL-IFP016V2 connector and jumper description
Name
Type
Function
INTERFACE1
30-pin connector
Communication with interface board
CON1
Power supply
Board power supply
CON2
Power outputs
C/Q, I/Q, L+, L- power outputs
J1
Jumper
ENC/Q
J2
Jumper
ENL+
I2C
J3
Jumper
J4
Jumper
VCC connected to VH
J5
Jumper
I2C address SA0
J6
Jumper
Linear regulator output voltage
J7
Jumper
I2C address SA2
J8
Jumper
I2C data bus SDA
J9
Jumper
I2C clock bus SCL
Doc ID 022954 Rev 1
address SA1
AN4075
Board description
Table 2.
Table 3.
STEVAL-IFP016V2 30-pin signal connector description
Pin number
Description
2
GND
5
INC/Q
6
OUTC/Q
9
SA1
10
SA2
11
SCL
12
SDA
15
ENL+
16
OUTI/Q
17
IRQ
18
RST
26
ENC/Q
27
SA0
Others
Not connected
STEVAL-IFP016V2 electrical specifications (recommended values)
Parameter
Value
Supply voltage range (VS)
18 to 32.5 V
Logic input voltage range
0 to +5 V
Operating temperature range
-25 °C to +125 °C
L6360 thermal resistance junction-to-ambient
50 °C/W
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AN4075
STEVAL-IFP016V2 electrical schematic
AN4075
Board description
Table 4.
STEVAL-IFP016V2 component list
Part reference
Part value
Part description
C1
4.7 nF
Y5U capacitor
C3
10 µF - 50 V
Ceramic capacitor
C4
100 nF
Ceramic capacitor
C5
560 pF
Ceramic capacitor
C6
560 pF
Ceramic capacitor
C7
100 nF
Ceramic capacitor
C8
100 nF
Ceramic capacitor
C9
100 nF
Ceramic capacitor
C10
1 µF - 50 V
Ceramic capacitor
C11
100 nF
Ceramic capacitor
C12
10 nF
Ceramic capacitor
C13
1 nF
Ceramic capacitor
C14
4.7 nF
Y5U capacitor
TR1
SM15T33A
Unidirectional Transil™
TR2
SPT01-335DEE
Triple Transil
D1
STPS1L40M
Schottky diode
D2
STPS1L40M
Schottky diode
D3
LED - yellow
D4
LED - yellow
D5
LED - red
D6
LED - green
R1
100 kΩ
Resistor
R2
100 kΩ
Resistor
R3
270 Ω
Resistor
R4
270 Ω
Resistor
R5
270 Ω
Resistor
R6
270 Ω
Trimmer
R7
0Ω
R8
270 Ω
Resistor
R9
270 Ω
Resistor
R10
15 Ω
Resistor
R11
430 Ω
Resistor
R12
270 Ω
Resistor
R13
270 Ω
Resistor
R14
270 Ω
Resistor
Doc ID 022954 Rev 1
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Board description
AN4075
Table 4.
STEVAL-IFP016V2 component list (continued)
Part reference
Part value
Part description
R15
270 Ω
Resistor
R16
100 k Ω - 1%
Resistor
R17
430 Ω
Resistor
R18
270 Ω
Resistor
R19
510 Ω
Resistor
R20
750 Ω
Resistor
R21
4.7 kΩ
Resistor
R22
4.7 kΩ
Resistor
R23
4.7 kΩ
Resistor
U1
L6360
IO-Link communication master
transceiver
Figure 3.
10/23
STEVAL-IFP016V2 component placement
Doc ID 022954 Rev 1
AN4075
Board description
Figure 4.
STEVAL-IFP016V2 topside layer
Figure 5.
STEVAL-IFP016V2 inner 1st layer
Doc ID 022954 Rev 1
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Board description
12/23
AN4075
Figure 6.
STEVAL-IFP016V2 inner 2nd layer
Figure 7.
STEVAL-IFP016V2 bottomside layer
Doc ID 022954 Rev 1
AN4075
3
Using STEVAL-IFP016V2
Using STEVAL-IFP016V2
The STEVAL-IFP016V2 board can be used in combination with the STEVAL-PCC009V2 or
STEVAL-PCC009V1 demonstration board.
IC inputs can be controlled by the STEVAL-PCC009V2/1 or set by the hardware using
jumpers on the board.
The CON1 connector is used to supply the board. Supply voltage should be connected to
the VCC pin. Linear regulator input voltage VH can be connected directly to VCC using
jumper J4. If J4 is open, the VH voltage must be kept below the VCC value.
The 3.3 V or 5 V voltage for logic inputs and for the reference voltage is obtained from the
linear regulator output VDD. It is possible to select 3.3 V or 5 V using jumper J6.
Jumpers J3, J5 and J7 allow I2C interface address configuration.
CON2 is used to provide input/output voltages from/to external circuits. The C/Q channel is
used for communication (transceiver line), L+ is used to supply an IO-Link device, L- is
shorted to GND and the I/Q channel is used as an additional input (communication) line.
3.1
Connection to the STEVAL-PCC009V2 or STEVAL-PCC009V1
demonstration board
The complete evaluation kit, apart from STEVAL-IFP016V2 also in the communication
board, is used to program the IC and to control UART communication.
A GUI interface is used to configure the L6360 IC through the communication board.
3.2
Basic supply protection circuit
A cost-effective supply voltage protection has been implemented, while reverse-polarity
protection has not.
Supply overvoltage protection is provided by the TR1 diode. It works as a primary
overvoltage clamp to limit supply line distortions - like surge pulses or oscillations caused by
line parasitic parameters (inductance) during the plug-in phase, for example. The rating of
1500 W is recommended to provide reliable protection. A unidirectional Transil must be used
to avoid negative stress on the L6360.
An energy buffer filters the application supply to avoid high ripple during power driver
switching, etc. C3 is used as the filtering bulk capacitor.
Doc ID 022954 Rev 1
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Using STEVAL-IFP016V2
Figure 8.
AN4075
STEVAL-IFP016V2 supply protection
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3.3
Independent VH pin supply vs. direct connection to VCC
VH voltage must be always lower than (or equal to) VCC, even during power-up and powerdown of the application. Care must be taken when supplying VH from another source (VCC
and VH not connected together). In some cases a diode D_VH placed between VCC and VH
may help to avoid this violation.
Figure 9.
STEVAL-IFP016V2 VH supply protection vs. VCC
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AN4075
3.4
Using STEVAL-IFP016V2
IO-Link communication
This section gives information about the implementation of a possible alternative I/O filter
conforming only to the IO-Link standard. The board implements more advanced I/O
protection circuitry (see Section 4).
An energy buffer for the L6360 supply makes the IC supply voltage stable and limits EMI
noise. C1 is used to block the power supply.
Capacitors C5, C6, C7 work as a basic protection against fast transient signals like burst or
a radio-frequency domain applied to the lines.
Figure 10. L6360 communication interface suitable for IO-Link
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3.5
Standard IO (SIO) protection circuit
An energy buffer for the L6360 supply makes the IC supply voltage stable and limits EMI
noise. C4 is used to block the power supply.
Capacitors C5, C6, C7 work as a basic protection against fast transient signals like burst or
a radio-frequency domain applied to the lines.
Schottky diodes with low VF D1 and D2 are used for the suppression of negative voltage
spikes. They clamp the disturbances applied to the lines in a reverse-polarity direction.
Diodes can conduct high surge current pulses to avoid high peak current flow through the
pins of the L6360 which could become damaged.
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Using STEVAL-IFP016V2
AN4075
R10 is used to limit surge current. It reduces the current flow in the L6360 - I/Q pin in both
polarities when surge pulses are applied to the line. If this resistor is omitted, the I/Q line
surge immunity is lower.
Triple Transil TR2 (SPT01-335DEE) is used as the primary surge protection to avoid
overvoltage on the L6360 interface. It protects the L+ switch against negative voltage
pulses, shares current flow of negative surge pulses with the additional Schottky diodes on
the C/Q and I/Q lines, and clamps positive surge pulses applied to the C/Q and I/Q lines.
Figure 11. STEVAL-IFP016V2 protection circuit
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4
Application EMC immunity
Application EMC immunity
This paragraphs lists the STEVAL-IFP016V2 application EMC test results. The indicated
immunity is considered as quantitative information only.
4.1
Register values
The L6360 has been initialized with the following configuration values:
●
Configuration = 0 x 60 (push-pull)
●
Control1 = 0 x F8
●
–
C/QI pull-down enabled
–
C/QO cutoff current = 500 mA
–
C/QO cutoff current delay = 250 μs
–
C/QO restart delay = 256 x 250 μs
–
C/QI debounce time (filter) is off (0 μs)
Control2 = 0 x A0
–
I/Q pull-down enabled
–
C/QI pull-down generator 5.5 mA
–
L+ cutoff enabled
–
L+ cutoff delay 500 μs
–
L+ restart delay 64 ms
–
I/Q debounce time (filter) is off (0 μs)
●
LED1H = 0 x 55 (highest blinking frequency)
●
LED1L = 0 x 55
●
LED2H = 0 X FF (lowest blinking frequency)
●
LED2L = 0 x 00
4.2
Burst test
4.2.1
Test conditions
●
Supply voltage: 23 VDC
●
L+ switch ON (active), C/Q in Rx mode (PP but EN C/Q low)
●
Register values - see Section 4.1
●
L+, C/Q, I/Q lines loaded by 1 kΩ resistors vs. L-
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Application EMC immunity
4.2.2
AN4075
Test signal
According the IEC 61000-4-4
4.2.3
●
Polarity: positive/negative
●
Burst duration: 15 ms ± 20% at 5 kHz
●
Burst period: 300 ms ± 20%
●
Duration time: 1 minute
●
Applied to: L+, C/Q, I/Q and L- lines through capacitive clamp
Test setup
The EFT signal was coupled to the supply voltage lines through the capacitive coupling
clamp which corresponds to approximately 150 pF.
The application supply voltage was provided by two 12 V lead battery cells.
Earth (reference plain) was connected to the application.
Table 5.
Application EFT (burst) immunity, applied to IO-Link lines
(L+, C/Q, I/Q, L-)
Polarity
EFT test signal amplitude, test result
1 kV
2 kV
3 kV
4 kV
Positive (+)
A
(1)
A(1)
A(1)
A(1)
Negative (-)
A(1)
A(1)
A(1)
A(1)
1. The L6360 internal registers state stable; logic interface state changes not evaluated.
4.2.4
Conclusion
The application is immune against fast transient burst signals.
Burst applied to the IO-Link communication lines has no influence on the stability of the
L6360 internal registers.
4.3
EMC IEC 61000-4-5 surge immunity test
4.3.1
Test conditions
18/23
●
Supply voltage: 23 V (approximately)
●
Ambient temperature: 23 °C
●
L+, C/Q configured as mentioned in Table 6 to Table 8
●
Register values - see Section 4.1
●
L+, C/Q, I/Q lines left floating
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4.3.2
Application EMC immunity
Test signal
According to IEC 61000-4-5:
●
5 positive and 5 negative surges
●
Repetition rate: 1 min.
●
Coupling: 42 Ω/0.5 μF
●
Applied to:
–
IO-Link bus lines (L+, C/Q and I/Q) - common/differential mode
–
Supply lines (VCC, GND) - common/differential mode
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Application EMC immunity
4.3.3
AN4075
Test setup
The test was executed on the IO-Link bus lines (L+, C/Q and I/Q vs. earth reference).
Tests were made on the output lines vs. earth - common mode (CM), as well as on output
lines vs. L- (GND) - in differential mode. The earth reference is coupled by
2 x 4.7 nF/3 kV capacitors (C1, C14) with VCC and GND. The length of the cables was
minimized. The surge pulse was coupled with a coupling network of 42 Ω/0.5 μF.
After every surge sequence, the power supply current and C/Q, I/Q current sink values were
measured and compared to their initial state and the functionality of the receiver and driver
paths (functionality of the output switches) was checked.
4.3.4
Test results
Table 6.
Application surge immunity - common mode
Surge test signal amplitude, test result at polarity (+ / -)
Applied to
500 V
1 kV
1.5 kV
2 kV
2.5 kV
L+ OFF
-/-
A(1) / A(1)
A(1) / A(1)
A(1) / A(1)
A(1) / A (1)
L+ ON
A(1) / A(1)
A(1) / A(1)
A(1) / A(1)
A(1) / A(1)
A(1) / A (1)
C/Q LS ON
A(1) / A(1)
A(1) / A(1)
A(1) / A(1)
A(1) / A(1)
A(1) / A (1)
C/Q HS ON
A(1) / A(1)
A(1) / A(1)
A(1) / A(1)
A(1) / A(1)
A(1) / A (1)
C/Q Rx mode
A(1) / A(1)
A(1) / A(1)
A(1) / A(1)
A(1) / A(1)
A(1) / A (1)
-/-
A(1) / A(1)
A(1) / A(1)
A(1) / A(1)
A(1) / A (1)
I/Q
1. The values of the L6360 internal registers did not change.
Table 7.
Application surge immunity - differential mode
Surge test signal amplitude, test result at polarity (+ / -)
Applied to
500 V
1 kV
1.5 kV
2 kV
2.5 kV
L+ OFF
A(1) / A(1)
A(1)/ A(1)
-/-
-/-
-/-
L+ ON
A(1)/
B(2)
B(2)
-/-
-/-
-/-
C/Q LS ON
A(1)/ A(1)
A(1) / B(2)
-/-
-/-
-/-
C/Q HS ON
A(1)/
A(1)
A(1)
B(2)
-/-
-/-
-/-
C/Q Rx mode
A(1)
(2)
(2)
(2)
-/-
-/-
-/-
I/Q
A(1)/
A(1)
-/-
-/-
-/-
B(2)
/B
A(1)
B
/
/
/B
A(1)/
1. The values of the L6360 internal registers did not change.
2. The L6360 registers were reset, IRQ signal is activated.
20/23
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Application EMC immunity
Table 8.
Application supply surge immunity CM, DM
Surge test signal amplitude, test result at polarity (+ / -)
Applied to:
VCC vs. earth (CM)
VCCvs L- (DM)
500 V
1 kV
1.5 kV
2 kV
2.5 kV
-/-
-/-
-/-
-/-
A(1) / A(1)
A(1) / B(2)
B(2) / B(2)
B(2) / B(2)
B(2) / B(2)
B(2) / B(2)
1. The values of the L6360 internal registers did not change.
2. The L6360 registers were reset and IRQ signal activated.
4.3.5
Conclusion
Immunity of different L6360 pins was evaluated and the external protection circuit adjusted
accordingly. The protection circuit which showed the best EMC performance is used in the
STEVAL-IFP016V2 application.
C/Q transceiver
The C/QI and C/QO pins should be protected against negative overvoltages (higher than
approximately 1.5 V) during the surge test. If the negative pulse is higher than the
mentioned value, the internal structure can be damaged. It is recommended to short both
pins together and protect them with a low VF drop Schottky diode (e.g. STPS1L40),
a 560 pF ceramic capacitor and one diode of SPT01-335DEE array.
I/Q receiver
The I/Q pin should be protected in a similar way against negative overvoltages. Tests
showed positive immunity results when using an external low VF Schottky diode
(STPS1L40), a 15 Ω resistor in series, a 560 nF capacitor and one diode of SPT01-335DEE
array. When a 15 Ω resistor is omitted, the chip fails at -2 kV CM surge pulse amplitude.
L+ driver
Protecting the L+ pin with a 100 nF ceramic capacitor and one diode of SPT01-335DEE
array showed sufficient immunity against 2.5 kV CM / 1 kV DM surge pulses.
Supply (VCC, L- / GND)
External protection circuits in the application provide sufficient immunity against surge
pulses (CM/DM) applied to supply lines. Even 2.5 kV surge pulses did not cause
degradation of the L6360 IC.
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Revision history
5
AN4075
Revision history
Table 9.
22/23
Document revision history
Date
Revision
25-Apr-2012
1
Changes
Initial release.
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