ANALOG DEVICES EVAL-LTC7066-AZ 150V Half Bridge Driver User Guide
- June 12, 2024
- Analog Devices
Table of Contents
ANALOG DEVICES EVAL-LTC7066-AZ 150V Half Bridge Driver User Guide
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 0.8Ω pull-down and 1.5Ω pull-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:
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Connect two 100Ω power resistors to the SW node, as shown in Figure 1.
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Apply VIN-POWER supply.
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Apply VIN-LOGIC supply.
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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.
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Monitor the BG, TG, and SW pins with a scope.
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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
Schematic
Revision History
| REVISION NUMBER | REVISION DATE | DESCRIPTION | PAGES CHANGED |
|---|---|---|---|
| 0 | 6/23 | Initial release | — |
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References
- Mixed-signal and digital signal processing ICs | Analog Devices
- Document Feedback Form | Analog Devices
- Mixed-signal and digital signal processing ICs | Analog Devices
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