EVAL-ADUM4121-1EBZ - ANALOG DEVICES

EVAL-ADuM4121EBZ/EVAL-ADuM4121-1EBZ User Guide

UG-1041

One Technology Way • P. O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com

Evaluation Board for the ADuM4121 and ADuM4121-1 iCoupler, High Voltage,

Isolated Gate Drivers with Internal Miller Clamp, 2 A Output

PLEASE SEE THE LAST PAGE FOR AN IMPORTANT

WARNING AND LEGAL TERMS AND CONDITIONS. Rev. 0 | Page 1 of 5

FEATURES

2 A peak drive output capability

Output power device resistance: <2 Ω

Low propagation delay: <51 ns

Operating temperature range: −40°C to +125°C

Output voltage range to 35 V

Output and input undervoltage lockout (UVLO)

Pad placement for multiple switch types

Screw terminals for easy connectivity

EVALUATION KIT CONTENTS

EVAL-ADuM4121EBZ evaluation board or the EVAL-

ADuM4121-1EBZ evaluation board

EQUIPMENT NEEDED

Suggested test equipment

Primary side power supply: 0 V to 6 V at 100 mA

Secondary side supply: 0 V to 35 V at 250 mA

Square wave generator: 0 V to 5 V

GENERAL DESCRIPTION

The EVAL-ADuM4121EBZ and EVAL-ADuM4121-1EBZ

evaluation boards support the ADuM4121/ADuM4121-1

single-channel gate drivers with an integrated miller clamp.

Analog Devices, Inc., iCoupler® technology provides isolation

between the input signal and the output gate driver. The EVAL-

ADuM4121-1EBZ option is populated with the ADuM4121-1

which does not contain an internal thermal shutdown and does

not shutdown the output in case of junction temperatures above

155°C (typical).

The ADuM4121 provides operation with voltages of up to 35 V.

The integrated miller clamp activates on the falling edge of an

edge transition to further clamp the output low to counteract

miller turn on effects.

The EVAL-ADuM4121EBZ evaluation board facilitates testing

of the propagation delay, drive strength, miller clamp functionality,

and input logic of the device.

For complete information about the ADuM4121/ADuM4121-1,

refer to the ADuM4121/ADuM4121-1 data sheet that should be

consulted in conjunction with this user guide when using the

evaluation board.

EVAL-ADUM4121EBZ EVALUATION BOARD

14970-001

Figure 1.

UG-1041 EVAL-ADuM4121EBZ/EVAL-ADuM4121-1EBZ User Guide

Rev. 0 | Page 2 of 5

TABLE OF CONTENTS

Features .............................................................................................. 1

Evaluation Kit Contents ................................................................... 1

Equipment Needed ........................................................................... 1

General Description ......................................................................... 1

EVA L-ADuM4136EBZ Evaluation Board ..................................... 1

Revision History ............................................................................... 2

Setting Up the EVA L-ADuM4121EBZ or EVAL-ADuM4121-

1EBZ ................................................................................................... 3

Initial Configuration .....................................................................3

Pad Layout for the Device Under Test (DUT)...........................3

Power Connections .......................................................................3

Input/Output Connections ..........................................................3

Evaluation Board Schematics and Artwork ...................................4

Ordering Information .......................................................................5

Bill of Materials ..............................................................................5

REVISION HISTORY

10/2016—Revision 0: Initial Version

EVAL-ADuM4121EBZ/EVAL-ADuM4121-1EBZ User Guide UG-1041

Rev. 0 | Page 3 of 5

SETTING UP THE EVAL-ADUM4121EBZ OR EVAL-ADUM4121-1EBZ

INITIAL CONFIGURATION

Before initial use, certain steps must be completed to prepare the

EVA L-ADuM4121EBZ or EVA L -ADuM4121-1EBZ evaluation

board for operation. In the stock configuration (see Figure 1),

the R1 to R4 resistors are not placed. These are the locations of

the series external resistors for the charging and discharging paths

of the device being driven. It is recommended to use 1206 surface-

mount resistors with values between approximately 1 Ω and 10 Ω,

depending on the load being driven. R1 and R2 provide to parallel

placements, while R3 and R4 are in series. An actual insulated gate

bipolar transistor (IGBT) or metal-oxide semiconductor field

effect transistor (MOSFET) can be placed in the provided Q1,

Q2, or Q3 landing patterns. Jumper P1 allows shorting across

the series external resistors to observe overshoot and/or allow

the user to probe voltage to quantify peak currents.

Resistors R6 and R7 are provided if the user desires to terminate the

inputs VI+ and VI− with 50 Ω loads. R6 and R7 are not required,

and, if not placed, the evaluation board accepts high impedance

signal generator signals.

Pins accompany the screw terminals. The user decides which

connection mechanism to use. The screw terminals aid in

connecting wires for longer term measurements, but are not

recommended for placement of the devices being driven. The

distance to the screw terminals for Jumper P8 is far from the gate

driver and introduces parasitic inductances to the measurement.

Jumpers P3 and P4 allow the user to tie the VI+ and/or VI− pins

to VDD1 or GND1 quickly. If using P3 and/or P4, do not attempt

to drive the pin that is jumpered by an external signal generator.

PAD LAYOUT FOR THE DEVICE UNDER TEST (DUT)

Figure 2 shows the top layer artwork for the dual-gate driver circuit.

Evaluation board components include the following:

• U1 is the footprint for the ADuM4121 or ADuM4121-1.

• C1 and C2 are 0.1 µF bypass capacitors; C3 is a 10 µF

bypass capacitor.

• Q1, Q2, and Q3 can be populated with TO-246, TO-252, or

TO-220 MOSFETs or IGBTs (see Figure 2).

• R1 to R4 are gate resistors that control the edges of the

outputs. By default, no resistors are installed; these resistors

must be populated with low value 1206 resistors, generally

in the 1 Ω to 10 Ω range.

C/D

E/S

14970-002

Figure 2. IGBT/MOSFET Footprint

POWER CONNECTIONS

Follow these steps to connect the ADuM4121 or ADuM4121-1

evaluation board to a power supply:

1. Connect the input supply (2.5 V to 5.5 V) with the positive

terminal on VDD1 and the ground on GND1.

2. Connect the ADuM4121 or ADuM4121-1 VDD2 supply

voltage (4.5 V to 35 V) to the VDD2 pin and return to the

GND2 pin.

GND1 and GND2 are isolated. The emitter/source of the

IGBT/MOSFET is tied to GND2.

INPUT/OUTPUT CONNECTIONS

The VI+ and VI− pins are complementary metal oxide semicon-

ductor (CMOS) inputs. To drive the gate driver with positive

logic, tie VI− to GND1 and connect the input signal to the VI+

pin. To drive the gate drive with negative logic, connect VI+ to

VDD1, and connect the input signal to VI−. VI− can also be used

as a disable pin. By driving VI− high, the output remains low

regardless of the signal at the VI+ pin.

The EVA L-ADuM4121EBZ evaluation board comes with screw

terminals for both the input and output connections. These

terminals facilitate connection options but are not the best

option for high performance transient testing. The best

measurements performed on the load, whether it is an IGBT,

MOSFET, or load capacitor, come from small loop measurements

performed at the load. Using the screw terminals as either the

sensing node or for the connection of the load often results in

observing overshoot during measurement.

UG-1041 EVAL-ADuM4121EBZ/EVAL-ADuM4121-1EBZ User Guide

Rev. 0 | Page 4 of 5

EVALUATION BOARD SCHEMATICS AND ARTWORK

ADuM4121

IN–

DD1

IN+

GND

DD2

OUT

CLAMP

GND

R3 R4

E/S

GATE

C/D

GATE

C/D

E/S

C2 C3

P3 Q1, Q2, Q3

VDD1

VI+

VDD1

GND1

VDD1

VI–

VI+

VI–

GND1

VDD1

VDD2

GND2

VDD2

GND2

VDD2

14970-003

Figure 3. Schematic of the EVAL-ADuM4121EBZ

14970-004

Figure 4. EVAL-ADuM4121EBZ Evaluation Board Top Layer

14970-005

Figure 5. EVAL-ADuM4121EBZ Evaluation Board Bottom Layer

EVAL-ADuM4121EBZ/EVAL-ADuM4121-1EBZ User Guide UG-1041

Rev. 0 | Page 5 of 5

ORDERING INFORMATION

BILL OF MATERIALS

Table 1.

Reference Designator Description

U1 ADuM4121 or ADuM4121-1

R5 Resistor, 0 kΩ, 1206

C1, C2 Capacitor, 0.1 μF, 25 V, 10%, 1206

C3 Capacitor, 10 μF, 50 V, 10%, 1206

R1 to R4, R6, R7, Q1, Q2, Q3 Not installed

ESD Caution

ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection

circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality.

Legal Terms and Conditions

By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions

set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you

have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you (“Customer”) and Analog Devices, Inc.

(“ADI”), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to Customer a free, limited, personal,

temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY. Customer understands and agrees that the Evaluation Board is provided

for the sole and exclusive purpose referenced above, and agrees not to use the Evaluation Board for any other purpose. Furthermore, the license granted is expressly made subject to the following additional

limitations: Customer shall not (i) rent, lease, display, sell, transfer, assign, sublicense, or distribute the Evaluation Board; and (ii) permit any Third Party to access the Evaluation Board. As used herein, the term

“Third Party” includes any entity other than ADI, Customer, their employees, affiliates and in-house consultants. The Evaluation Board is NOT sold to Customer; all rights not expressly granted herein, including

ownership of the Evaluation Board, are reserved by ADI. CONFIDENTIALITY. This Agreement and the Evaluation Board shall all be considered the confidential and proprietary information of ADI. Customer may

not disclose or transfer any portion of the Evaluation Board to any other party for any reason. Upon discontinuation of use of the Evaluation Board or termination of this Agreement, Customer agrees to

promptly return the Evaluation Board to ADI. ADDITIONAL RESTRICTIONS. Customer may not disassemble, decompile or reverse engineer chips on the Evaluation Board. Customer shall inform ADI of any

occurred damages or any modifications or alterations it makes to the Evaluation Board, including but not limited to soldering or any other activity that affects the material content of the Evaluation Board.

Modifications to the Evaluation Board must comply with applicable law, including but not limited to the RoHS Directive. TERMINATION. ADI may terminate this Agreement at any time upon giving written notice

to Customer. Customer agrees to return to ADI the Evaluation Board at that time. LIMITATION OF LIABILITY. THE EVALUATION BOARD PROVIDED HEREUNDER IS PROVIDED “AS IS” AND ADI MAKES NO

WARRANTIES OR REPRESENTATIONS OF ANY KIND WITH RESPECT TO IT. ADI SPECIFICALLY DISCLAIMS ANY REPRESENTATIONS, ENDORSEMENTS, GUARANTEES, OR WARRANTIES, EXPRESS OR IMPLIED, RELATED

TO THE EVALUATION BOARD INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, TITLE, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF INTELLECTUAL

PROPERTY RIGHTS. IN NO EVENT WILL ADI AND ITS LICENSORS BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES RESULTING FROM CUSTOMER’S POSSESSION OR USE OF

THE EVALUATION BOARD, INCLUDING BUT NOT LIMITED TO LOST PROFITS, DELAY COSTS, LABOR COSTS OR LOSS OF GOODWILL. ADI’S TOTAL LIABILITY FROM ANY AND ALL CAUSES SHALL BE LIMITED TO THE

AMOUNT OF ONE HUNDRED US DOLLARS ($100.00). EXPORT. Customer agrees that it will not directly or indirectly export the Evaluation Board to another country, and that it will comply with all applicable

United States federal laws and regulations relating to exports. GOVERNING LAW. This Agreement shall be governed by and construed in accordance with the substantive laws of the Commonwealth of

Massachusetts (excluding conflict of law rules). Any legal action regarding this Agreement will be heard in the state or federal courts having jurisdiction in Suffolk County, Massachusetts, and Customer hereby

submits to the personal jurisdiction and venue of such courts. The United Nations Convention on Contracts for the International Sale of Goods shall not apply to this Agreement and is expressly disclaimed.

registered trademarks are the property of their respective owners.

UG14970-0-10/16(0)