IRS21844MPBF

Gate Driver Overview

The IRS21844MPBF is a high-voltage, high-speed half-bridge gate driver IC manufactured by Infineon Technologies. It integrates two independent channels for driving power MOSFETs and IGBTs in half-bridge topologies. The device supports a supply voltage range of 10 V to 20 V and withstands up to 600 V on the high-side channel via bootstrap operation. It features synchronous logic compatible with CMOS and TTL inputs. Key electrical parameters include a peak output current of 1.9 A source and 2.3 A sink, propagation delays up to 900 ns, and rise/fall times of 40 ns/20 ns. It operates within a junction temperature range of -40°C to +150°C and is housed in a 16-MLPQ (4x4) surface-mount package.

Gate Driver Feature Summary

• Integrates two independent high-speed half-bridge driver channels for synchronized switching applications.
• Supports high-voltage floating channel operation up to 600 V using bootstrap or isolated supply methods.
• Features robust UVLO protection for both VCC and VS supplies to prevent improper switching under low voltage conditions.
• Designed with junction isolation (JI) technology to ensure functional safety and noise immunity in high dv/dt environments.

Gate Driver Applications

• Industrial motor drives and servo systems
• Switched-mode power supplies (SMPS)
• Inverter circuits for AC/DC and DC/AC conversion

Gate Driver Procurement Notes

Verify component authenticity through authorized Infineon distributors or certified partners. Confirm the specific suffix 'MPBF' corresponds to the 16-MLPQ package and lead-free RoHS compliance. Check for moisture sensitivity level (MSL 2) handling requirements during storage and assembly. Ensure design compatibility with the specified 10 V to 20 V supply range and input logic thresholds before procurement.

Gate Driver Selection Notes

Select this component for applications requiring a compact, dual-channel half-bridge solution with high voltage tolerance. It is suitable where space constraints favor the MLPQ package over larger SOIC or DIP alternatives. Consider its propagation delay characteristics for timing-sensitive control loops. Verify that the thermal performance of the 16-MLPQ package meets the system's power dissipation requirements under maximum load conditions.

Gate Driver Part Context

The IRS21844MPBF belongs to the IRS21844 family of high-voltage gate drivers from Infineon. It shares core functionality with variants like IRS21844MTRPBF and IRS21844S but differs in packaging and reel specifications. This specific part number denotes the MLPQ surface-mount variant, distinguishing it from tape-and-reel or PDIP versions within the same product line.

Gate Driver Replacement Considerations

Direct substitutes include other IRS21844 variants such as IRS21844MTRPBF or IRS21844SPBF, provided pinout and package dimensions are compatible with the existing PCB footprint. Cross-reference with equivalent half-bridge drivers from other manufacturers only if electrical parameters and isolation ratings match precisely.

Gate Driver FAQ

What is the maximum high-side voltage rating for the IRS21844MPBF?

The device supports a maximum high-side voltage of 600 V relative to the negative rail when operating in half-bridge configurations.

Does the IRS21844MPBF support inverted logic inputs?

No, the standard IRS21844MPBF features non-inverting logic inputs. Inverted versions typically carry different suffixes or model numbers.

What type of isolation does the IRS21844MPBF utilize?

It uses junction isolation (JI) technology, which provides functional isolation between the low-side control circuitry and the high-side floating driver.