UCC27211DRMT

Gate Driver Overview

The UCC27211DRMT is a high-frequency half-bridge gate driver manufactured by Texas Instruments, designed for driving N-channel MOSFETs. It features independent high-side and low-side outputs with a maximum bootstrap voltage of 120 V DC. The device provides peak output currents of 3.7 A source and 4.5 A sink, enabling efficient switching of power MOSFETs. It operates within a supply voltage range of 8 V to 17 V and accepts TTL-compatible inputs. Key timing parameters include a typical propagation delay of 20 ns, rise time of 7.2 ns, and fall time of 5.5 ns under a 1000 pF load. The unit is housed in an 8-VSON (4x4) package.

Gate Driver Feature Summary

• Integrated 120 V rated bootstrap diode eliminates the need for external discrete components.
• Input pins tolerate voltages from -10 V to 20 V, allowing direct connection to gate drive transformers without rectification.
• Symmetric UVLO ensures consistent turn-on and turn-off behavior for both high-side and low-side drivers.
• High noise immunity provided by TTL-compatible input structure with enhanced hysteresis.

Gate Driver Applications

• Solar power optimizers and micro-inverters
• Telecommunications and commercial power supplies
• Online and offline uninterruptible power supplies (UPS)
• Energy storage systems

Gate Driver Procurement Notes

Verify the specific suffix DRMT corresponds to the 8-VSON (4x4) package configuration when sourcing. Confirm that the component meets RoHS3 compliance requirements for the target assembly process. Ensure the ordering part number matches the exact pinout and thermal pad specifications required by the PCB layout design to avoid integration errors.

Gate Driver Selection Notes

Select this component for applications requiring independent control of high-side and low-side N-channel MOSFETs with fast switching speeds. The integrated bootstrap diode simplifies circuit design compared to previous generations. Consider the 8V UVLO threshold and TTL input compatibility when interfacing with PWM controllers. The wide operating temperature range supports demanding industrial environments.

Gate Driver Part Context

This device belongs to the UCC2721x family of half-bridge gate drivers, representing an evolution of the popular UCC27201 series. It offers improved peak output currents and reduced on-resistance to minimize switching losses during Miller plateau transitions. The family maintains compatibility with standard industry packages while enhancing robustness against negative voltage transients at the switch node.

Gate Driver Replacement Considerations

UCC27211D: SOIC-8 package variant with identical electrical characteristics.

Gate Driver FAQ

Can the UCC27211DRMT be connected directly to a gate drive transformer?

Yes, the input structure can directly handle -10 VDC, allowing direct connection to gate drive transformers without requiring external rectification diodes.

What is the maximum voltage the HS pin can withstand?

The switch node (HS pin) can handle a maximum voltage of -(24 - VDD) V, protecting the high-side channel from parasitic inductance and stray capacitance effects.