7ED020E12-FI-U1 Evaluation Board for SmartPIM1 Modules with 2ED020I12-FI driver ICs

Application Note AN 2010-03
V1.0, May 2010
AN2010-03
7ED020E12-FI-U1 – Evaluation Board for SmartPIM1
Modules with 2ED020I12-FI driver ICs
IFAG IMM INP M AE
N 2010-03
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Application Note AN 2010-03
V1.0, May 2010
Edition 2010-05-07
Published by
Infineon Technologies AG
59568 Warstein, Germany
© Infineon Technologies AG 2010.
All Rights Reserved.
Attention please!
THE INFORMATION GIVEN IN THIS APPLICATION NOTE IS GIVEN AS A HINT FOR THE
IMPLEMENTATION OF THE INFINEON TECHNOLOGIES COMPONENT ONLY AND SHALL NOT BE
REGARDED AS ANY DESCRIPTION OR WARRANTY OF A CERTAIN FUNCTIONALITY, CONDITION OR
QUALITY OF THE INFINEON TECHNOLOGIES COMPONENT. THE RECIPIENT OF THIS APPLICATION
NOTE MUST VERIFY ANY FUNCTION DESCRIBED HEREIN IN THE REAL APPLICATION. INFINEON
TECHNOLOGIES HEREBY DISCLAIMS ANY AND ALL WARRANTIES AND LIABILITIES OF ANY KIND
(INCLUDING WITHOUT LIMITATION WARRANTIES OF NON-INFRINGEMENT OF INTELLECTUAL
PROPERTY RIGHTS OF ANY THIRD PARTY) WITH RESPECT TO ANY AND ALL INFORMATION GIVEN
IN THIS APPLICATION NOTE.
Information
For further information on technology, delivery terms and conditions and prices please contact your nearest
Infineon Technologies Office (www.infineon.com).
Warnings
Due to technical requirements components may contain dangerous substances. For information on the types
in question please contact your nearest Infineon Technologies Office. Infineon Technologies Components
may only be used in life-support devices or systems with the express written approval of Infineon
Technologies, if a failure of such components can reasonably be expected to cause the failure of that lifesupport device or system, or to affect the safety or effectiveness of that device or system. Life support
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persons may be endangered.
AN2010-03
Revision History: date(2010-08-13), V1.0
Previous Version: none
Page: Subjects (major changes since last revision)
all: First release
Author: Alain Siani(IFAG IMM INP M AE)
We Listen to Your Comments
Any information within this document that you feel is wrong, unclear or missing at all? Your feedback will
help us to continuously improve the quality of this document. Please send your proposal (including a
reference to this document) to: [[email protected]]
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Application Note AN 2010-03
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Evaluation Board for SmartPIM1
Table of contents
1
Introduction ...................................................................................................................................4
2
2.1
2.2
2.3
2.4
Design features .............................................................................................................................5
Main features .................................................................................................................................5
Pin assignment..............................................................................................................................5
Mechanical dimension..................................................................................................................6
Mounting of the SmartPIM1 Module............................................................................................6
3
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
Application note ............................................................................................................................7
Switching behavior .......................................................................................................................8
Over current and short circuit protection ..................................................................................9
Brake chopper .............................................................................................................................10
Overtemperature protection ......................................................................................................10
/Fault output ................................................................................................................................10
RMS current and DC link voltage limits....................................................................................10
Indication of the surge current at turning on of the board.....................................................10
Cooling condition .......................................................................................................................10
4
4.1
4.2
4.3
Schematic, Layout and Bill of Material .....................................................................................11
Schematic ....................................................................................................................................11
Layout ..........................................................................................................................................14
Bill of material .............................................................................................................................16
5
How to order the evaluation board............................................................................................17
Part number explanation
7ED
020
E12
-FI
-U1
Package SmartPIM1
Functional isolation
Suitable for 1200V module
2-Amp driver ICs
7 channel evaluation board
Warnings
The described board is an evaluation board dedicated for laboratory environment
only. It operates at high voltages. There is no galvanic isolation between the high
voltage side and any part of the board. This board must be operated by qualified,
skilled personal conversant with all applicable safety standards.
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Application Note AN 2010-03
V1.0, May 2010
Introduction
The Evaluation Driver Board 7ED020E12-FI-W2 for SmartPIM1 modules shown in Figure 1 was
developed to support customers during their first steps designing applications with these modules. The
basic version of the board is available from Infineon in small quantities. The properties of these parts
are described in the datasheet chapter of this document whereas the remaining paragraphs provide
information intended to enable the customer to copy, modify and qualify the design for production,
according to his specific requirements.
The design of the 7ED020E12-FI-W2 was performed with respect to the environmental conditions
described as design target in the datasheet part. The requirements of RoHS compliance have been
considered when components were selected. The design was tested as described in this
documentation but not qualified regarding manufacturing and operation in the whole operating ambient
temperature range or lifetime.
The boards provided by Infineon are subjected to functional testing only.
Due to their purpose Evaluation Boards are not subjected to the same procedures regarding Returned
Material Analysis (RMA), Process Change Notification (PCN) and Product Withdraw (PWD) as regular
products.
See Legal Disclaimer and Warnings for further restrictions on Infineon’s warranty and liability.
Figure 1
The Evaluation Board 7ED020E12-FI-U1 with SmartPIM1
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Evaluation Board for SmartPIM1
2
Design features
The following sections provide an overview of the boards including main features, key data, pin
assignments and mechanical dimensions.
2.1
Main features
The Evaluation Board 7ED020E12-FI-U1 contains four coreless transformer ICs 2ED020I12-FI from
Infineon and one Infineon SmartPIM1 module, which contains a B6 diode rectifier, a brake chopper
and six IGBTs for the inverter. Figure 2 shows the functional groups of the evaluation board.
X5
Terminals U, V, W
Terminals L1, L2, L3
J1
Driver 1
Logic selector
Driver 2
IGBT Module
Driver 3
Timer
Driver 4
X4
Figure 2
Brake
DC-Link
Functional groups of the evaluation board 7ED020E12-FI-U1
The Evaluation board provides following main features:
- Rectifier, brake chopper and inverter integrated in one SmartPIM1 module.
- Functional isolation between high side and low side with coreless transformer technology.
- Short circuit and overcurrent protection.
- Overtemperature protection.
- Overvoltage protection.
2.2
Pin assignment
All the PWM signals and voltage supplies should be applied to the connectors X4 and X5. In the
following table the pin assignment is given:
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Table 1
Pin assignment of the connectors X4 and X5
Pin name
Pin function
X5-1
PWM_TOP_U
X5-2
PWM_BOT_U
X5-3
PWM_TOP_V
X5-4
PWM_BOT_V
X5-5
PWM_TOP_W
X5-6
PWM_BOT_W
X5-7
Enable
X5-8
/Fault output
X5-9
GND
X4-1
Power supply 15V
X4-2
GND
2.3
Application Note AN 2010-03
V1.0, May 2010
Mechanical dimension
Figure 3
Mechanical dimension of 7ED020E12-FI-U1
2.4
Mounting of the SmartPIM1 Module
A unique feature of SmartPIM1 is the combination of press fitting and mounting to the heatsink within
one step as described in AN2009-09.
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Evaluation Board for SmartPIM1
3
Application note
The evaluation board is powered by an external single power supply of +15 V at connector X4. A
linear voltage regulator (IC7) provides from this source a second supply voltage of 5 V for the logic
selector (IC5, IC6), timer (IC8), and comparators of IC1 to IC4. By default, boot-strap circuits provide
power to the high-side IGBT drivers. The connectors X1, X2 and X3 offer the option of using three
external power supplies for the high-side drivers instead of the boot-strap circuits.
The SmartPIM1 terminals EU, EV, EW and NB are shorted and connected through a shunt resistor R8
to the negative DC link voltage. Also GND for the drivers and peripheral electronic is connected to the
negative DC link voltage. There is no galvanic isolation of common GND and negative DC link voltage.
The logic selector (IC5, IC6) consists of two 74AC86 and sets the Active HIGH/LOW logic of the PWM
inputs and the Enable signal for the drivers according to Table 1. The selection for either active HIGH
or Active LOW logic is done by jumper J1. An external Enable signal at connector X5-7 is needed to
turn on the drivers. In case the driver stages are not enabled, the timer output (IC8, Pin 3) has always
HIGH state, which forces all drivers to shutdown through Q2 by a LOW signal at input /SD.
The following table shows the truth table for the active high/low configuration:
Table 2
Active Low/High settings
µController
J1
X5-7 (Enable)
OutL, OutH
X5-1…X5-6=0
Jumper on pin 1-2 (Active LOW)
0
1
X5-1…X5-6=0
Jumper on pin 1-2 (Active LOW)
1
0
X5-1…X5-6=0
Jumper on pin 2-3 (Active HIGH)
0
0
X5-1…X5-6=0
Jumper on pin 2-3 (Active HIGH)
1
0
X5-1…X5-6=1
Jumper on pin 1-2 (Active LOW)
0
0
X5-1…X5-6=1
Jumper on pin 1-2 (Active LOW)
1
0
X5-1…X5-6=1
Jumper on pin 2-3 (Active HIGH)
0
0
X5-1…X5-6=1
Jumper on pin 2-3 (Active HIGH)
1
1
Furthermore the electronic is constantly monitoring for short circuits, overcurrents and
overtemperature. In the event of a fault the timer input will be triggered (IC8, Pin 2) by a HIGH to LOW
transition and sets the timer output (IC8, Pin 3) to HIGH. This HIGH signal will switch on Q1 and Q2.
Q1 will signal the fault to Pin X5-8 (open-collector output) and Q2 will shutdown all drivers through the
/SD input. The timer output will be reset to LOW defined by a delay time t = R17 • C32 • 0,69 and for
voltage bellow 1/3 • Vcc. In case the LOW signal at the trigger input remains the timer will wait until the
trigger input receives a HIGH signal.
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3.1
Switching behavior
The switching characterization with a module FP35R12U1T4 was done using double pulse test. The
following figures show the switching behavior at nominal current of 35A. The test was done at 25°C,
125°C and 150°C, 600V DC link voltage and 6Ω gate resistor value.
100ns/div
100ns/div
Vge 5V/div
Vge 5V/div
Ic 10A/div
Ic 10A/div
Vce 150V/div
Vce 150V/div
Figure 4
Turn on (left) and turn off (right) with FP35R12U1T4 behavior @25°C
100ns/div
100ns/div
Vge 5V/div
Ic 10A/div
Ic 10A/div
Vge 5V/div
Vce 150V/div
Vce 150V/div
Figure 5
Turn on (left) and turn off (right) with FP35R12U1T4 behavior @125°C
100ns/div
100ns/div
Vge 5V/div
Vge 5V/div
Ic 10A/div
Ic 10A/div
Vce 200V/div
Vce 200V/div
Figure 6
Turn on (left) and turn off (right) with FP35R12U1T4 behavior @150°C
With the diagram the switching losses Eon and Eoff at 25°C, 125°C and 150°C can now be calculated.
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Table 3
Switching energy with FP35R12U1T4
Temperature
Eon datasheet
@ Ls = 35nH
Eon
@ Ls = 83nH
Eoff datasheet
@ Ls = 35nH
Eoff
@ Ls = 83nH
@25°C
1.9mJ
2.5mJ
2mJ
2mJ
@125°C
2.9mJ
3.5mJ
2.9mJ
2.96mJ
@150°C
3.15mJ
3.9mJ
3.2mJ
3.25mJ
The switching losses are comparable with the values in listed in the datasheet.
Furthermore there is no parasitic switching on to be observed in the turn on transient.
3.2
Over current and short circuit protection
The shunt resistor voltage is filtered by an RC circuit (R19, C21) and forwarded to OP31 and OP4.
OP3 is configured as non-inverting amplifier; OP4 is configured as inverting amplifier. Diode D12 and
D13 are used to detect the maximum of both amplifier outputs. Therefore overcurrent-protection is
provided as well for positive DC-link current and for negative DC-link current. CP3 compares the
voltage from amplifier OP3 to a reference voltage for over-current measurement, whereas CP4
detects short circuit-currents. The basic difference between CP3 and CP4 is the different reference
voltage and time constant of the input RC-filters. In case the measured over- or short-circuit-current
passes the threshold the associated comparator output turns LOW and triggers the timer input (IC8,
Pin 2). A typical short circuit test was done:
Vge 5V/div
100ns/div
Vge 5V/div
Vce 150V/div
100ns/div
Vce 150V/div
Ic 50A/div
Ic 50A/div
Figure 7
Short circuit test @25°C (left) and @125°C (right)
To change the threshold of the over-current detection the reference voltage of CP3 has to be modified,
i.e. increasing (decreasing) of R27 will increase (decrease) the threshold. To change the threshold
time the RC circuit of R25 and C33 has to be modified, e.g. increasing (decreasing) of R25 will
increase (decrease) the time.
To change the threshold of the short-circuit-current detection the reference voltage of CP4 has to be
modified, i.e. increasing (decreasing) of R29 will increase (decrease) the threshold. To change the
1
The OP3 means the operation amplifier integrated in IC3. The same designation is used for the other CPs and
OPs.
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threshold time the RC circuit of R26 and C34 has to be modified, e.g. increasing (decreasing) of R26
will increase (decrease) the time.
3.3
Brake chopper
The DC link voltage is scaled down to a low voltage by resistors R36 to R44. The resulting voltage is
compared by CP2 with a reference voltage. In case the DC link voltage is above the threshold, the
output drives the low-side driver of IC4, which turns on the gate of the brake chopper. CP2 has a
hysteresis defined by R47. To change the threshold for the brake chopper DC link voltage detection
the reference voltage of CP2 has to be modified, i.e. increasing (decreasing) of R46 will increase
(decrease) the threshold. The upper and lower threshold is defined by R47.
3.4
Overtemperature protection
Based on the built-in NTC in the module the bottom copper plane temperature will be monitored and in
case of overtemperature the driver will be shut down.
The NTC together with R31 build a voltage divider, the voltage will be fed to the CP1 and compared
with a reference voltage defined by the voltage divider consisting of R32 and R33. In case of
overtemperature the output of CP1 will be switched to low and triggers the timer input to switch down
the drivers.
Notice: This temperature measurement is not suitable for short circuit detection or short term overload
and may be used to protect the module from long term overload conditions or malfunction of the
cooling system.
3.5
/Fault output
In case of short circuit, overcurrent or overtemperature the /Fault Pin (X5-8) will be switched to low to
report an error to the microcontroller. After a definable delay time t=R17*C32 the driver will be
switched on again if the fault condition does not exist anymore. So in case of fault condition, it is very
important that the microcontroller is informed about the error and has been programmed to perform
suitable actions.
3.6
RMS current and DC link voltage limits
The RMS current of the board is limited to be 10A.
The maximum DC link voltage is limited to be 800V. With a brake resistor connected, the brake
chopper will limit the DC link voltage according to the set point as described in section 3.3.
3.7
Indication of the surge current at turning on of the board
The board has built-in thermistors to prevent the rectifier diodes from the surge current at plugging.
Once the board is plugged into the power supply with the thermistors being still cold, the input current
will be limited. After a while, the thermistors will get hot and the resistance decrease to provide a low
impedance power supply for the board.
Notice: After sometime of operation, the thermistors are getting hot and have a low
resistance value. If the board is disconnected from the power supply and is connected
again immediately, it is possible to damage the rectifier diodes with large surge
current.
3.8
Cooling condition
The board is provided without heat sink. However, a heat sink is necessary for the proper operation of
the board. For dimension of heat sink, it is recommended to refer to the software IPOSIM from
Infineon.
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Schematic, Layout and Bill of Material
In the following sections the schematic, layout and bill of material of 7ED020E12-FI-W2 will be
provided.
4.1
Schematic
Figure 8
Input stage
Figure 9
Driver stage
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Figure 10
Power stage
Figure 11
Fault timer
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Figure 12
OV OC SC and OT protection circuit
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4.2
Layout
Figure 13
Layout of Top layer
Figure 14
Layer 2
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Figure 15
Layer 3
Figure 16
Layout of bottom layer
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4.3
Bill of material
Type
Qty
value
package size
name part
Jumper
1
Capacitor
1
1µ
1206
C33
Capacitor
5
1n
1206
C21, C27, C28, C34, C36
Capacitor
3
2.2µ
Tantalum, size D
C6, C12, C18
J1
Connector
1
9POL2.54
9POL2.54
X5
Capacitor
3
10n
1206
C29, C31, C35
Capacitor
1
33n
1206
C26
Capacitor
1
47µ
CPOL-EUE2,5-6E
C23
Capacitor
9
100n
C-EUC1206K
C4, C10, C16, C24, C25,
C30, C32, C37, C38
Capacitor
4
4u7
C-EUC1206K
C5, C11, C17, C22
Capacitor
11
330p
C-EUC1206K
C1, C2, C3, C7, C8, C9,
C13, C14, C15, C19, C20
Connector
4
2POL2.54
2POL2.54
X1, X2, X3, X4
Connector
10
Tab terminals, type
Vogt 3866G.68
(F061.080)
B, L1, L2, L3, N, P, P1, U,
V, W
Resistor
3
10R
R1206 from TT
Electronics, series:
PWC.
R64, R65, R66
Resistor
3
2R2
NTC_EPCOS
R50, R51, R52
Resistor
3
2k
1206
R16, R34, R48
Resistor
1
3.3k
1206
R44
Resistor
1
5.1k
1206
R18
Resistor
1
8.2k
1206
R46
Resistor
1
9.1k
1206
R21
Resistor
3
10k
1206
R22, R25, R49
Resistor
1
13k
1206
R27
Resistor
1
15k
SOMC1601
RN1
Resistor
10
15k
1206
R9, R10, R11, R12, R13,
R14, R15
Resistor
1
18k
1206
R30
Resistor
1
18m
5020
R8
Resistor
1
22k
1206
R45
Resistor
1
27k
1206
R28
Resistor
1
33k
1206
R33
Resistor
1
56k
1206
R35
Resistor
1
82k
1206
16
R20
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Resistor
11
100R
1206
R53, R54, R55, R56, R57,
R58, R59, R60, R61, R62,
R63
Resistor
1
100k
1206
R23
Resistor
1
150k
1206
R47
Resistor
2
470R
1206
R19, R31
Resistor
1
560k
1206
R17
Resistor
8
680k
1206
R36, R37, R38, R39, R40,
R41, R42, R43
820R
1206
R26
Semiconductor 4
2ED020I12-F
PG-DSO-18-2
IC1, IC2, IC3, IC4
Semiconductor 2
74AC86D
14-SOIC
IC5, IC6
Semiconductor 1
78L05
SO-8
IC7
Semiconductor 5
BCR533
SOT23
Q1, Q2, Q3, Q4, Q5
Semiconductor 7
BZV55C16
D-SOD-80
D4, D5, D6, D7, D8, D9,
D10
Semiconductor 1
LMC555
SO-8
IC8
Semiconductor 2
LS103A
D-SOD-80
D12, D13
Resistor
1
Semiconductor 3
STTA112U
SMB
D1, D2, D3
Semiconductor
FP35R12U1T4
SartPIM1 IGBT
IFX1
Box
1
Gate resistor list
Part type U1T4
Recommended gate resistor
FP25R12U1T4
FP35R12U1T4
5
Package
Name part
10R
1206
R1, R2, R3, R4, R5, R6, R7
6R
1206
R1, R2, R3, R4, R5, R6, R7
How to order the evaluation board
Every Evaluation Driver Board has its own IFX order number and can be ordered via your Infineon
Sales Partner.
Information can also be found at the Infineons Web Page: www.infineon.com
CAD-data for the board described here are available on request. The use of this data is subjected to
the disclaimer given in this AN. Please contact: [email protected]
IFX order number for 7ED020E12-FI-U1: 35027
17
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