EVAL-2ED020I12-F2 Application Notes (1.3 MB, EN)

Eice DR IV ER ™
High voltage gate driver IC
E valu atio n B oar d
Application Note
EV AL_ 2E D02 0I1 2 - F2
Applic atio n N ote
Revision 1.0, 2013-07-26
Infin eon T echnol ogi es A G
Edition 2013-07-26
Published by
Infineon Technologies AG
81726 Munich, Germany
© 2013 Infineon Technologies AG
All Rights Reserved.
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EiceDRIVER™ Driver IC Evaluation Board
EVAL_2ED020I12-F2 Application Note
Revision History: 2013-07 Rev.1.0
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of WIND RIVER SYSTEMS, INC. ZETEX™ of Diodes Zetex Limited.
Last Trademarks Update 2011-11-11
Revision 1.0, 2013-07-26
EiceDRIVER™ Driver IC Evaluation Board
EVAL_2ED020I12-F2 Application Note
Table of Contents
Table of Contents
1
Introduction ........................................................................................................................................ 5
2
2.1
2.2
2.3
Design feature .................................................................................................................................... 6
Main features ........................................................................................................................................ 6
Key data ............................................................................................................................................... 7
Pin assignment ..................................................................................................................................... 8
3
3.1
3.2
3.3
3.4
3.5
3.6
3.7
Electrical features .............................................................................................................................. 9
Supply voltages +5V and +15V ............................................................................................................ 9
Under voltage lockout .......................................................................................................................... 9
VCEsat monitoring for short circuit detection ....................................................................................... 9
Active Miller clamping ........................................................................................................................ 10
IGBT turn - on / off .............................................................................................................................. 11
DC-Link capacitor ............................................................................................................................... 12
Input PWM-Signals............................................................................................................................. 12
4
4.1
4.2
4.2.1
4.2.2
4.2.3
4.2.4
4.3
Schematic and Layout ..................................................................................................................... 14
Schematic ........................................................................................................................................... 14
Layout ................................................................................................................................................. 17
Creepage distance ............................................................................................................................. 17
Layout top ........................................................................................................................................... 17
Layout bottom..................................................................................................................................... 17
Top place ............................................................................................................................................ 18
Bill of material ..................................................................................................................................... 19
Application Note
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EiceDRIVER™ Driver IC Evaluation Board
EVAL_2ED020I12-F2 Application Note
Introduction
1 Introduction
The gate driver evaluation board EVAL_2ED020I12-F2 was developed to show the functionalities and
key features of the Infineon IGBT gate driver 2ED020I12-F2.
The board is available from Infineon in sampling quantities. The properties of this part 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
their own specific requirements.
The design of the EVAL_2ED020I12-F2 was performed with respect to the environmental
conditions described in this document. The design was tested as described in this document, but
not qualified regarding manufacturing, lifetime or over the full ambient operating conditions.
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 Discontinuation (PD)
as regular products. These Evaluation Boards are used for development support only and should not
be used as reference design for volume production.
See Legal Disclaimer and Warnings for further restrictions on Infineons warranty and liability.
Application Note
5
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EiceDRIVER™ Driver IC Evaluation Board
EVAL_2ED020I12-F2 Application Note
Design feature
2 Design feature
This chapter provides an overview of the main features, key datas, pin assignments and mechanical
dimensions
2.1 Main features
Figure 2-1 top view of the EVAL_2ED020I12-F2
The EVAL_2ED020I12-F2 contains an Infineon IGBT gate half bridge driver 2ED020I12-F2 and two
Infineon IGBTs IKP20N60H3.
The evaluation board provides the following main features
 Galvanic isolation by the coreless transformer technology of the Infineon gate driver. The gate
2ED020I12-F2 is suitable for basic isolation
 Isolation inside the half bridge by defined creepage
 Short circuit protection
 Under voltage lock out
 Active miller clamp
 Bootstrap functionality for high side IGBT
 Connector for 5V digital supply, 15V supply, Reset, High voltage supply, external load
 Status LED for 5V supply, 15V supply, ready and fault separated for high- and lowside driver
 DC link capacitor
Application Note
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EiceDRIVER™ Driver IC Evaluation Board
EVAL_2ED020I12-F2 Application Note
Design feature
IGBT half bridge gate driver
HV-supply input V+HV
Status LED Ready / Fault
DC-link
External load
IGBT
HV-supply input Ground
5V, 15V supply input, Reset with status LEDs
Figure 2-2 overview functionalities on top-side
2.2 Key data
All values are values at an ambient temperature of 25°C.
Table 2-1
Parameter Description
Typ.
Min.
Max.
Unit
+15V
5V
HV
IOut
IGmax
RGmin
15
5
-
13
4.5
10
17.5
5.5
600
20
2
-
V
V
V
A
A
15V voltage supply
5V voltage supply
High voltage supply
Output current
Max. peak gate driver output current
Min. gate resistor to limit gate driver output
Ω
* Please make sure that the maximum rated values never get exceeded. Also the performance and quality can
not be guaranteed when using the board with all parameters in maximum rated value at the same time.
Application Note
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EiceDRIVER™ Driver IC Evaluation Board
EVAL_2ED020I12-F2 Application Note
Design feature
2.3 Pin assignment
Table 2-2
Connector name
Pin no.
Pin name
Description
RESET
Right terminal
Left terminal
/RST
GND
same as X1-B1
same as X1-A16
+5V (VCC1)
Left terminal
Right terminal
+5V
GND
positive 5V logic supply
same as X1-A16
+15V (VCC2)
Right terminal
Left terminal
+15V
GND
positive 15V supply for secondary side
X1
A16
B1
B2
B5
B6
B7
B8
B16
GND
/RST
/FLT
IN-T
IN-B
IN+T
IN+B
+5V
reference for 5V supply and input signals
input – 0V to reset circuit
output combined /Fault_T, /Fault_B, 0..5V
inverting input top IGBT; internal pull up
inverting input bottom IGBT; internal pull up
non-inverting input top IGBT; 0V off; 5V on
non-inverting input bottom IGBT; 0V off; 5V on
positive 5V supply
reference for high voltage supply (Power-GND,
internally connected to GND)
positive high voltage supply (up to 800V related
to GND_HV)
GND_HV
V+HV
OUT
Application Note
Output HV half bridge (related to GND_HV)
8
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EiceDRIVER™ Driver IC Evaluation Board
EVAL_2ED020I12-F2 Application Note
Electrical features
3 Electrical features
3.1 Supply voltages +5V and +15V
The supply voltage for the digital part (+5V VCC1) and for the driver output (+15V VCC2) has to be
supplied externally over the dedicated connectors. The evaluation board does not provide an over
voltage supply monitoring, therefore the user has to ensure that the voltages are in the correct range.
Voltages above the max. values will lead to damages of the IGBT drivers. The availability of the
supply voltages is visible over the green status LEDs.
The high-Side gate driver is supplied over a bootstrap diode DBOOT. To ensure that the bootstrap
capacitor is charged before the high side IGBT is switched on, the low side IGBT has to be switched
on for a dedicated time.
3.2 Under voltage lockout
The +15V supply VCC2 is monitored by the 2ED020I12-F2. In case of an undervoltage of <13V the
driver output is switched off. This status is visible over the yellow READY LEDs for top and bottom
side. If the LED is on, the +15V supply is >13V
3.3 VCEsat monitoring for short circuit detection
The Infineon gate driver 2ED020I12-F2 provides a short circuit detection by measuring the VCEsat
voltage of the IGBT. If a short circuit occurs, the collector current and the saturation voltage increase.
If the IGBT is commanded on stated and the VCE reaches 9V a short circuit is detected and the gate
driver output is switched off. This status is reported by the /FLT signal and the dedicated FAULT LED
is switched on.
Figure 3-1 shows the signals of the bottom side driver and IGBT during a shoot through.
VCEsat
IC
VGE_BOT
Figure 3-1 the signals of the bottom side driver and IGBT during a shoot through
(Ic curve with 1.2µs delay due to slow current probe)
The FAULT status is latched by the 2ED020I12-F2 and must be resetted by switching the RESET
Signal to ground
Application Note
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EiceDRIVER™ Driver IC Evaluation Board
EVAL_2ED020I12-F2 Application Note
Electrical features
3.4 Active Miller clamping
On this evaluation board the Infineon gate driver 2ED020I12-F2 is supplied with a unipolar voltage
+15V/0V instead of a bipolar supply voltage e.g. +15V/-8V. To avoid a parasitic turn on of the gate by
switching on the opposite IGBT, the feature “Active Miller Clamp” of the 2ED020I12-F2 is used. During
turn-off, the gate voltage is monitored. If the gate voltage goes below 2V related to VEE2, the clamp
output is activated and clamps the gate voltage to VEE2 till an on-command for the gate driver output
occurs.
VCE_bot
Clamp active
activated
VGE_top
VGE_bot
IC
Figure 3-2 the clamping of the top side gate at voltages < 2V
Application Note
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EVAL_2ED020I12-F2 Application Note
Electrical features
3.5 IGBT turn - on / off
The switching characteristic of the IGBTs is defined by the gate resistors RG1B, RG1T, RG2B and
RG2T.
Figure 3-3 bottom side driver output
The gate resistors are adapted to the Infineon IGBT IKP20N60H3 to get signals with less oscillation
as possible by keeping a fast slope at the output. There is the possibility to adapt the switching
characteristic to specific applications or to different IGBTs by replacing the values of RG1B and RG1T.
The use of RG2B and RG2T together with DG1B and DG1T makes it possible to change the onswitching and the off-switching slopes of the IGBT independent to each other.
To avoid a shoot through between top- and bottom IGBT, the operator needs ensure sufficient dead
time. With this setup the deadtime should be > 1.5µs.
VCE_bot
VGE_bot
IC
Figure 3-4 turning on bottom IGBT
Application Note
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EiceDRIVER™ Driver IC Evaluation Board
EVAL_2ED020I12-F2 Application Note
Electrical features
VGE_bot
VCE_bot
IC
Figure 3-5 turning off bottom IGBT
VGE_bot
VCE_bot
IC
VGE_top
Figure 3-6 turning off bottom IGBT and turning on top IGBT with delay of 2.5µs
3.6 DC-Link capacitor
Due to the available space there is only a small DC-Link capacitor of 220nF available. If a bigger DCLink capacity is necessary it has to be connected externally to the connectors V+HV and GND_HV.
3.7 Input PWM-Signals
The PWM input pins of the 2ED020I12-F2 can be configured in non-inverting input logic or inverting
input logic.
 IN+ Non Inverting Driver Input
IN+ control signal for the driver output if IN- is set to low, e.g. the IGBT is on if IN+ = high and
IN- = low
 IN- Inverting Driver Input
IN- control signal for the driver output if IN+ is set to high, e.g. the IGBT is on if IN- = low and
IN+ = high
Application Note
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EiceDRIVER™ Driver IC Evaluation Board
EVAL_2ED020I12-F2 Application Note
Electrical features
The EVAL_2ED020I12-F2 is designed in that way, that the non-inverting input is used. There is the
possibility to use also the inverting input logic by replace RIN1T, RIN1B and RP1T and RP1B.
Figure 3-7 bottom side driver input
There is also the possibility to use low pass filters inside the PWM input signals to avoid a undesired
switch on an IGBT by disturbances. This feature is not used in this evaluation board, but there is the
possibility to test it by changing the resistors RIN1T, RIN1B, RIN2T, RIN2B and the capacitors CIN1T,
CIN1B, CIN2T, CIN2B.
Application Note
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EiceDRIVER™ Driver IC Evaluation Board
EVAL_2ED020I12-F2 Application Note
Schematic and Layout
4 Schematic and Layout
4.1 Schematic
Figure 4-1 HV supply input and DC-Link
Figure 4-2 LV Supply and Reset Input
Application Note
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EVAL_2ED020I12-F2 Application Note
Schematic and Layout
Figure 4-3 connector X1
Figure 4-4 Infineon driver 2ED020I12-F2 top and bottom
Application Note
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EVAL_2ED020I12-F2 Application Note
Schematic and Layout
Figure 4-5 LEDs, FAULT and READY logic
Application Note
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EiceDRIVER™ Driver IC Evaluation Board
EVAL_2ED020I12-F2 Application Note
Schematic and Layout
4.2 Layout
4.2.1 Creepage distance
The isolation between input and output is ensured by the coreless transformer of the 2ED020I12-F2
IGBT gate driver. The creepage distance ensured by the layout is 8mm between low- and high
voltage supply and 0.9mm inside the high voltage supply area.
4.2.2 Layout top
Figure 4-6 Layout top of the EVAL_2ED020I12-F2
4.2.3 Layout bottom
Figure 4-7 Layout bottom of the EVAL_2ED020I12-F2
Application Note
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EiceDRIVER™ Driver IC Evaluation Board
EVAL_2ED020I12-F2 Application Note
Schematic and Layout
4.2.4 Top place
Figure 4-8 top place view of the EVAL_2ED020I12-F2
Application Note
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EiceDRIVER™ Driver IC Evaluation Board
EVAL_2ED020I12-F2 Application Note
Schematic and Layout
4.3 Bill of material
Part
Value
Package
C1, C4, C5, C6
C1B, C1T, C3
C2
C2B, C2T
C3B, C3T
C7
C_BULK
100nF/10V X7R
1uF/10V X7R
100µF/16V
1µF/25V X7R
220pF/50V X7R
4u7F/25V X7R
220nF/1000V
SMD0603
SMD0805
6.3 x 6.3 x 7.7mm
SMD1206
SMD0603
SMD1206
C22.5B10
BAT165
STTH112U
MURS160T3G
1k
10R
100R
SOD323F
SMB_DO-214AA
SMB_DO-214AA
SMD0805
SMD1206
SMD1206
0R
820R
SMD0603
SMD0805
270R
SMD0805
10k
IC-DRV-2ED020I12-F2
IKP20N60H3_IGBT
BCR192
SMD0603
PG-DSO-36-58
TO220BH
SOT23
TL2, TL4
BCR142W
SOT323
X1
+5V, +15V, RESET
GND_HV, OUT, V+HV
!FAULT_B, !FAULT_T
15V, VCC
READY_B, READY_T
FAB32Q2
22-23-2021
MKDSN1,5/2-5,08
LED_RT
LED_GN
LED_GE
FAB32Q2
22-23-2021
MKDSN1,5/2-5,08
CHIPLED_0805
CHIPLED_0805
CHIPLED_0805
D1, D2, D2B
D2T, D3B, D3T
D1B, D1T
DBOOT
R1B, R1T
RBOOT
RG1B, RG1T
RIN1B, RIN1T
RP2B, RP2T
RL1
RL2, RL3, RL4
RL5, RL6
RP3B, RP3T, RP4B
RP4T, RP5
2ED020I12-F2
T1B, T1T
TL1, TL3
Application Note
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Revision 1.0, 2013-07-26
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