MIC4605-2YM

Overview

The MIC4605-2YM is an 85V half-bridge MOSFET driver featuring adaptive dead time and shoot-through protection. It operates with a supply voltage range of 5.5V to 16V and delivers a peak output current of 1A. The device utilizes a single PWM input configuration with dual inputs for the half-bridge. It supports capacitive load drive of 1000pF in 35ns, with rise and fall times of 20ns. Operating temperatures range from -40°C to +125°C. The component is housed in an 8-SOIC package.

Feature Summary

• Adaptive dead-time circuitry actively monitors outputs to minimize transition time between high-side and low-side MOSFETs, maximizing power efficiency.
• Shoot-through protection prevents erroneous inputs and noise from simultaneously turning both MOSFETs on.
• Single PWM input architecture simplifies control logic for half-bridge applications.

Applications

• Half-bridge MOSFET gate driving
• Power conversion circuits requiring adaptive timing
• Systems needing shoot-through prevention

Procurement Notes

Verify the specific suffix '2YM' against the manufacturer's latest datasheet to confirm the single PWM input configuration. Ensure the 8-SOIC package matches your PCB footprint requirements. Confirm that the 85V rating aligns with your system's bootstrap voltage limits. Check for AEC-Q100 qualification if automotive reliability is required. Validate operating temperature ranges for your specific environment.

Selection Notes

Select this component when a single PWM input is preferred over dual independent inputs. The adaptive dead time feature reduces switching losses compared to fixed delay drivers. Ensure the 1A peak current capability meets the gate charge requirements of the target MOSFETs. Verify that the 5.5V to 16V supply range fits the available system rails. Consider the 8-SOIC package size for board space constraints.

Part Context

The MIC4605 series includes variants like the MIC4605-1YM which offers dual independent inputs. The MIC4605-2YM specifically integrates a single PWM input stage, reducing external component count for simple half-bridge topologies. This differentiation allows designers to choose between flexible independent control or simplified synchronized operation based on application needs.

Replacement Considerations

Check for MIC4605-1YM if dual independent inputs are acceptable. Verify compatibility with other Microchip half-bridge drivers in the same family. Ensure pinout and electrical specifications match before substituting.

FAQ

What is the function of the adaptive dead time in the MIC4605-2YM?

It actively monitors the half-bridge outputs to minimize the time between high-side and low-side MOSFET transitions, thereby maximizing power efficiency.

How does the MIC4605-2YM prevent shoot-through?

It employs anti-shoot-through circuitry that prevents erroneous inputs and noise from turning both MOSFETs on at the same time.