UCC5643MWP

Overview

The UCC5643MWP is a dual-channel isolated gate driver manufactured by Texas Instruments. It integrates two independent channels for driving high-side and low-side power switches, such as MOSFETs or IGBTs. The device operates with a supply voltage range of 4.5 V to 20 V for the primary side and 4.5 V to 20 V for the secondary side. It features peak output currents of 4 A source and 8 A sink per channel. The propagation delay is typically 120 ns with a skew of 10 ns between channels. It supports PWM frequencies up to 500 kHz and includes under-voltage lockout (UVLO) protection.

Feature Summary

• Integrated dual-channel isolation for simultaneous high-side and low-side switching control
• High peak drive capability with asymmetric current sourcing and sinking for optimized switching performance
• Built-in under-voltage lockout mechanisms to prevent improper operation during low supply conditions

Applications

• Isolated motor drives requiring precise gate control
• Inverter circuits in solar inverters and UPS systems
• Industrial automation controllers using IGBT or MOSFET modules

Procurement Notes

Verify the specific suffix 'MWP' corresponds to the TSSOP-16 package variant when ordering. Confirm RoHS compliance status through the manufacturer's official documentation prior to procurement. Ensure the supplier provides valid traceability records for automotive or industrial qualification requirements if applicable.

Selection Notes

Select this component when dual-channel isolation is required within a compact footprint. Compare propagation delay specifications against system timing constraints. Evaluate thermal performance based on the TSSOP-16 package limitations versus higher power alternatives. Verify input logic compatibility with the controlling microcontroller or DSP.

Part Context

This part belongs to the UCC56xx series of isolated gate drivers from Texas Instruments. It is designed for applications requiring galvanic isolation between control circuitry and power stages. The series offers various pin counts and channel configurations to suit different power electronics designs.

Replacement Considerations

Check for direct pin-to-pin replacements within the UCC56xx family. Verify equivalent isolation voltage ratings and propagation delays. Ensure alternative parts support the same operating temperature range and package dimensions.