Analog Devices EVAL-LTC7068-AZ User Manual

General Description
The EVAL-LTC7068-AZ
LTC7068 driving two N-channel MOSFETs in a half-bridge
configuration. The PWM input control is 5V logic
compatible and controls both gate outputs, with one output
complementing the other. The evaluation board has
several unpopulated Printed Circuit Board (PCB) pads to
help the user customize the board for their application.
Performance Summary (T
PARAMETER
Logic-Input Supply (VIN–LOGIC)
Power-Input Supply (VIN–POWER)
Maximum Output Current
PWM Control Frequency
Maximum Pulse-width Modulation
(PWM) Control Voltage
Quick Start Procedure
The EVAL-LTC7068-AZ can be evaluated without connecting any additional components or a load; however, the user
may find adding two load resistors, as shown in
can configure their application circuit. Test with resistor divider as a load:
• Connect two 100Ω power resistors to the SW node, as shown in
• Apply VIN–POWER supply.
• Apply VIN–LOGIC supply.
• Apply square-wave signal at a desired frequency to the PWM pin, as shown in
• Ensure the JP1 jumper is set to "ENABLED".
• Monitor the BG, TG, and SW pins with a scope.
• See
Figure 2 for expected results with:
a. VIN–POWER = 40V
b. VIN–LOGIC = 10V
c. The PWM input is set at a 5V peak at 1kHz.
Rev. 0
O n e A n a l o g Wa y , W i lm i ng t o n, M A 0 1 8 8 7 - 2 3 5 6 , U . S . A .
150V Half-Bridge Driver with Adaptive Shoot-through Protection
evaluation circuit features
= 25°C)
A
CONDITIONS
Figure
Evaluation Board User Guide
EVAL-LTC7068-AZ
The LTC7068 driver has powerful 1.3Ω pull-down and 1.6Ω
pull-up MOSFET drivers driving two 150V N-Channel
MOSFETs.
Design files for this circuit board are available at
Evaluation Boards and Kits | Design Center | Analog
.
Devices
MIN
6
1, provides a better means for evaluation. Alternatively, the user
Figure 1.
DOCUMENT FEEDBACK
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TYP MAX
14
150
10
2,000+
5.5
Figure 1.
TECHNICAL SUPPORT
Product
UNITS
V
V
A
kHz
V