Analog Devices EVAL-LTC7066-AZ User manual

Evaluation Board User Guide
EVAL-LTC7066-AZ
150V Half-Bridge Driver with Floating Grounds and Adjustable Dead-Time
Rev 0
DOCUMENT FEEDBACK
TECHNICAL SUPPORT
One Analog Way, Wilmington, MA 0 1887- 2356, U.S.A.
Tel: [phone]
©2023 Analog Devices, In c. All rights reser ved.
General Description
The EVAL-LTC7066-AZ evaluation circuit is a half-bridge
driver that drives two N-channel MOSFETs. The two 5V
logic-compatible PWM inputs independently drive each of
the two N-channel gate outputs to each MOSFET. The
eval kit has several unpopulated PCB pads to help
facilitate the user in customizing the board for their
application.
The LTC7066 driver has a powerful 0.8Ωpull-down and
1.5Ωpull-up MOSFET drivers driving two 150V N-channel
MOSFETs. The gate drivers on the LTC7066 are capable
of driving MOSFETs with different ground references;
however, this eval kit has these ground references
committed.
Design files for this circuit board are available.
Performance Summary (TA= 25°C)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Logic Input Supply (VIN-LOGIC)
6
14
V
Power Input Supply (VIN-POWER)
150
V
Maximum Output Current
10
A
PWM Control Frequency
2,000+
kHz
Maximum PWM Control Voltage
5.5
V
Quick Start Procedure
The EVAL-LTC7063-AZ can be evaluated without connecting any additional components or a load. However, the user
may find adding two load resistors, as shown in Figure 1, provides a better means for evaluating. Alternatively, the user
can configure their own application circuit. Test with a resistor divider as a load:
1. Connect two 100Ωpower resistors to the SW node, as shown in Figure 1.
2. Apply VIN-POWER supply.
3. Apply VIN-LOGIC supply.
4. Apply two 5V, 1kHz square-wave signals 180° apart with a 48% duty cycle, as shown below. Limiting the duty
cycle to 48% and staggering them 180° apart will ensure no shoot-through.

Evaluation Board User Guide
LTC7066-AZ
analog.com
Rev 0
2 of 4
5. Monitor the BG, TG, and SW pins with a scope.
6. See Figure 2 for expected results with:
a. VIN-POWER = 40V
b. VIN-LOGIC = 10V
Figure 1. EVAL-LTC7066-AZ Test Setup
Figure 2. Test Results

Evaluation Board User Guide
LTC7066-AZ
analog.com
Rev 0
3 of 4
Schematic
Revision History
REVISION
NUMBER
REVISION
DATE
DESCRIPTION
PAGES
CHANGED
0
6/23
Initial release
—

Evaluation Board User Guide
LTC7066-AZ
ASSUMED BY ANALOG DEVICES FOR ITS USE, NOR FOR ANY INFRINGEMENTS OF PATENTS OR OTHER RIGHTS OF THIRD PARTIES THAT
MAY RESULT FROM ITS USE. SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE. NO LICENCE, EITHER EXPRESSED OR
IMPLIED, IS GRANTED UNDER ANY ADI PATENT RIGHT, COPYRIGHT, MASK WORK RIGHT, OR ANY OTHER ADI INTELLECTUAL PROPERTY
RIGHT RELATING TO ANY COMBINATION, MACHINE, OR PROCESS WHICH ADI PRODUCTS ALL INFORMATION CONTAINED HEREIN IS
PROVIDED “AS IS” WITHOUT REPRESENTATION OR WARRANTY. NO RESPONSIBILITY IS OR SERVICES ARE USED. TRADEMARKS AND
REGISTERED TRADEMARKS ARE THE PROPERTY OF THEIR RESPECTIVE OWNERS.
analog.com
Rev 0
4 of 4