UCC21550 vs UCC21521DWR Comparison
Detailed side-by-side comparison of UCC21550 by Texas Instruments and UCC21521DWR by Texas Instruments. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Specification Comparison
| Parameter | UCC21550 | UCC21521DWR |
|---|---|---|
| Brand | Texas Instruments | Texas Instruments |
| Category | Power MOSFET Drivers | Power MOSFET Drivers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $1.25 | $2.15 |
| Channels | 2 (dual-channel) | — |
| Peak Source Current | 4 A | 4 A |
| Peak Sink Current | 6 A | 6 A |
| Isolation Rating | 5000 Vrms (reinforced, UL1577) | 5700 Vrms |
| Isolation Technology | Capacitive (silicon dioxide) | Capacitive coupling |
| Configurations | Dual low-side, dual high-side, or half-bridge | Dual low-side, dual high-side, or half-bridge |
| Supported Transistors | MOSFET, SiC, GaN, IGBT | — |
| Dead Time | Programmable via DT pin resistor | — |
| UVLO | Yes, on input and output supplies (A/B/C grade options) | — |
| Operating Temperature | -40C to +150C | -40C to +125C |
| Package | 16-SOIC (DW, 300 mil) | SOIC-16 (DW) |
| Mounting Type | Surface Mount | Surface Mount |
| Automotive Qualification | UCC21550x-Q1 family AEC-Q100 qualified | — |
| RoHS Status | Compliant | Compliant |
| CMTI | [DATA_NEEDED: common-mode transient immunity] | 100 V/ns (minimum) |
| Propagation Delay | [DATA_NEEDED: typical propagation delay] | 19 ns (typical) |
| Channel Count | — | 2 |
| Delay Matching | — | 5 ns (maximum) |
| Pulse-Width Distortion | — | 6 ns (maximum) |
| Minimum Pulse Width | — | 10 ns |
| Max Switching Frequency | — | 5 MHz |
| Input Threshold | — | TTL and CMOS compatible (3.3 V logic) |
| Enable / Disable Pin | — | Yes (DIS) |