Infineon EVAL HB 2EDL8 2 Series User manual

z
User Manual Please read the Important Notice and Warnings at the end of this document V 1.0
www.infineon.com/2edl8024g page 1 of 10 2020-12-04
UM_2007_PL88_2008_104603
Half-bridge buck converter evaluation board
using the EiceDRIVER™ 2EDL8x2x
Order code: EVAL_HB_2EDL8x2x
About this document
Scope and purpose
The 2EDL8x2x is the EiceDRIVERTM family of level-shift high-side and low-side drivers with 120 V maximum boot
voltage. 2EDL802x takes in independent inputs while the 2EDL812x takes in differential inputs. Both have a 3 A
or 4 A peak source current capability for both high-side and low-side, and a strong 5 A high-side and 6 A low-
side sink current capability.
The half-bridge buck converter evaluation board described in this document is designed as a test platform for
evaluating the performance of 2EDL8024G.
Intended audience
Power supply designers, component engineers, hardware engineers, etc.
Table of contents
About this document....................................................................................................................... 1
Table of contents............................................................................................................................ 1
1Introduction .......................................................................................................................... 2
2Getting started with the hardware ........................................................................................... 3
2.1 Evaluation board.....................................................................................................................................3
2.2 List of connection and test points ..........................................................................................................4
2.3 Quick start guide .....................................................................................................................................4
3Test results............................................................................................................................ 5
4Addendum............................................................................................................................. 7
4.1 Schematic................................................................................................................................................7
4.2 Layout......................................................................................................................................................7
4.3 Bill of materials (BOM) ............................................................................................................................8
Revision history.............................................................................................................................. 9

User Manual 2 of 10 V 1.0
2020-12-04
Half-bridge buck converter evaluation board using the EiceDRIVERTM
2EDL8x2x
Introduction
1Introduction
The evaluation board provides the design engineer with a test platform for evaluating the performance of the
2EDL8024G gate driver –such as, but not limited to, its propagation delay, delay matching and rise/fall time
characteristics. The influence of the surrounding gate drive circuitry such as the external gate resistors to the
MOSFET’s switching behavior can also be evaluated. The board is configured as a half-bridge buck converter in
an open-loop configuration and tested with 48 V typical input voltage and 12 V typical output voltage. The
Infineon components used in this evaluation board are:
EiceDRIVERTM 2EDL8024G as half-bridge driver for the low-side and high-side MOSFET
OptiMOSTM 100 V 4 mΩ(BSC040N10NS5) in SuperSO8 package as the power MOSFET
Table 1 shows the typical board electrical specifications, but the user has the freedom to vary the input voltage
(60 V maximum), output voltage, output current, switching frequency and dead-time, because the board is
configured in open-loop configuration. Care must be taken not to exceed the components’maximum voltage
ratings and current ratings (e.g., the inductor’s saturation current rating), as well as the devices’temperature
ratings. Provide adequate airflow or forced air if necessary.
Table 1 Board specifications
Parameter
Symbol
Value
Units
Input voltage
Vin
48
V
Output voltage
Vout
12
V
Output current
Iout
0 to 5
A
Switching frequency
Fsw
200
kHz
Dead-time
DTon, DToff
100
ns
Board dimensions
38.5 mm (L) x 47 mm (W)
Figure 1 Block diagram of EVAL_HB_2EDL8x2x
Vin
Cin
Cout

User Manual 3 of 10 V 1.0
2020-12-04
Half-bridge buck converter evaluation board using the EiceDRIVERTM
2EDL8x2x
Getting started with the hardware
2Getting started with the hardware
2.1 Evaluation board
Figure 2 EVAL_HB_2EDL8x2x –top side
Figure 3 EVAL_HB_2EDL8x2x –bottom side
Boot diode
Boot capacitor
V
DD
connector
HS-I/LS-I input connector
High-side
MOSFET
Low-side
MOSFET
2EDL8024G half-bridge
driver
Inductor
Output bulk capacitor
Input bulk capacitor
V
in
connector
V
out
connector
VDD capacitor

User Manual 4 of 10 V 1.0
2020-12-04
Half-bridge buck converter evaluation board using the EiceDRIVERTM
2EDL8x2x
Getting started with the hardware
2.2 List of connection and test points
Table 2 Connection and test points –functional descriptions
Connection/test point
Description
X1
HI and LI PWM input
X2
GND sense point
X3
Vout sense point
X4
VDD connector
X5
Vin connector
X6
Vout connector
X7
Vin sense point
2.3 Quick start guide
1. Input the PWM signals (LS-I and HS-I) using a function generator with the desired pulse width, dead-time
and frequency through connector X1. When using the 2EDL802x, ensure that there is sufficient dead-time to
avoid cross-conduction of the two MOSFETs. The 2EDL812x, on the other hand, has a built-in shoot-through
protection that ensures low-side and high-side outputs are never on at the same time.
2. Supply VDD voltage using an external auxiliary power supply between 8 V and 17 V through connector X4.
3. Supply the Vin voltage using an external power supply with 48 V (60 V maximum) through connector X5. If
verifying the gate driver IC characteristics only, such as propagation delay, there is no need to supply the Vin
voltage. In this case, HS pin must be shorted to GND in order to have a charging path for the bootstrap
capacitor.
4. Connect the Vout to the electronic load through connector X6 and increase the output current up to 5 A
maximum. Care must be taken not to exceed the inductor’s saturation limit.
5. The VDD, LI, HI, LO and HS pin of the gate driver can be measured by a low-voltage single-ended probe, while
the HO-HS and HB-HS should be measured using low-voltage differential probes. Probing loops should be
as short as possible to avoid any induced ringing, and probes should be placed directly or near the driver
pins to ensure accurate measurement of the driver’s performance.
6. To power down the board, turn-off the load first and then turn-off the input voltage supply. Finally, turn-off
the driver bias supply.

User Manual 5 of 10 V 1.0
2020-12-04
Half-bridge buck converter evaluation board using the EiceDRIVERTM
2EDL8x2x
Test results
3Test results
Figure 4 and Figure 5 show the falling and rising propagation delay of the low-side and high-side drives with
only the VDD bias supplied (HS is shorted to GND).
Figure 4 LI-LO falling (56.5 ns) and rising (59.9 ns) propagation delay (VDD = 12 V, Vin = 0 V, Cload = 4.1
nF)
Figure 5 HI-HO falling (57.3 ns) and rising (62.7 ns) propagation delay (VDD = 12 V, Vin = 0 V, Cload = 4.1
nF)
Figure 6 shows the high-side and low-side output waveforms together with the switch node waveforms at Vin =
48 V, VDD = 12 V, duty = 25 percent, Fsw = 200 kHz, load = 5 A and TA= 25°C.
Figure 6 LO (pink), HO (orange), HS (yellow) waveforms

User Manual 6 of 10 V 1.0
2020-12-04
Half-bridge buck converter evaluation board using the EiceDRIVERTM
2EDL8x2x
Test results
Figure 7 shows the inherent shoot-through protection of 2EDL812x with only VDD bias supplied (HS shorted to
GND). The driver outputs are low when both inputs are high.
Figure 7 2EDL812x inherent shoot-through protection

User Manual 7 of 10 V 1.0
2020-12-04
Half-bridge buck converter evaluation board using the EiceDRIVERTM
2EDL8x2x
Addendum
4Addendum
4.1 Schematic
Figure 8 EVAL_HB_2EDL8x2x board schematic
4.2 Layout
Figure 9 EVAL_HB_2EDL8x2x board layout

User Manual 8 of 10 V 1.0
2020-12-04
Half-bridge buck converter evaluation board using the EiceDRIVERTM
2EDL8x2x
Addendum
4.3 Bill of materials (BOM)
Figure 10 EVAL_HB_2EDL8x2x board BOM

User Manual 9 of 10 V 1.0
2020-12-04
Half-bridge buck converter evaluation board using the EiceDRIVERTM
2EDL8x2x
Revision history
Revision history
Document
version
Date of release
Description of changes
V 1.0
04-12-2020
First release

Trademarks
All referenced product or service names and trademarks are the property of their respective owners.
Edition 2020-12-04
UM_2007_PL88_2008_104603
Published by
Infineon Technologies AG
81726 Munich, Germany
© 2020 Infineon Technologies AG.
All Rights Reserved.
Do you have a question about this
document?
Email: [e-mail]
Document reference
IMPORTANT NOTICE
The information contained in this application note
is given as a hint for the implementation of the
product only and shall in no event be regarded as a
description or warranty of a certain functionality,
condition or quality of the product. Before
implementation of the product, the recipient of this
application note must verify any function and other
technical information given 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.
The data contained in this document is exclusively
intended for technically trained staff. It is the
responsibility of customer’s technical departments
to evaluate the suitability of the product for the
intended application and the completeness of the
product information given in this document with
respect to such application.
For further information on the product, technology,
delivery terms and conditions and prices please
contact your nearest Infineon Technologies office
(www.infineon.com).
WARNINGS
Due to technical requirements products may
contain dangerous substances. For information on
the types in question please contact your nearest
Infineon Technologies office.
Except as otherwise explicitly approved by Infineon
Technologies in a written document signed by
authorized representatives of Infineon
Technologies, Infineon Technologies’ products may
not be used in any applications where a failure of
the product or any consequences of the use thereof
can reasonably be expected to result in personal
injury.