Comparison: Infineon 2EDF9275FXUMA1 vs Broadcom HCPL-3120-000E Gate Drivers

Quick verdict

For modern high-frequency, high-voltage SiC or IGBT half-bridge applications demanding fast switching and high peak drive currents, the Infineon 2EDF9275FXUMA1 outperforms the HCPL-3120-000E with its higher peak currents (8A sink), faster rise/fall times (6.5/4.5 ns), and integrated half-bridge topology. For simpler single-channel, lower-frequency designs with isolation needs and through-hole mounting, especially where 2.5A peak current suffices and proven optical coupling is preferred, the HCPL-3120-000E remains a solid choice.

Spec comparison table

Spec2EDF9275FXUMA1HCPL-3120-000ENotes
ManufacturerInfineon TechnologiesBroadcom Limited
Product TypeHalf-Bridge Gate Driver ICSingle-Channel Gate Driver Optical Coupler2EDF9275FXUMA1 integrates two drivers; HCPL-3120-000E is single channel
Number of Drivers212EDF9275FXUMA1 supports half-bridge; HCPL-3120-000E is single-ended
Input TypeNon-InvertingNot explicitly stated (optocoupler)Optical isolation in HCPL-3120-000E; 2EDF9275FXUMA1 has non-inverting logic input
Gate Type SupportedIGBT, SiC MOSFETNot specified2EDF9275FXUMA1 specifically targets IGBT and SiC MOSFET
Voltage Supply (VDD) min6 V15 V2EDF9275FXUMA1 supports wider supply range (6–16 V typical 12 V); HCPL-3120-000E requires 15–30 V
Voltage Supply (VDD) max16 V30 VHCPL-3120-000E supports higher max supply voltage
Logic Voltage VIH1.65 V (typ)Not specified2EDF9275FXUMA1 logic input threshold is specified; HCPL-3120-000E requires optocoupler input
Peak Output Current Source4 A2 A2EDF9275FXUMA1 can source double the peak current, allowing faster gate charging
Peak Output Current Sink8 A2 A2EDF9275FXUMA1 has 4x sink current capability, critical for fast turn-off
Rise Time (typical)6.5 ns100 ns2EDF9275FXUMA1 is an order of magnitude faster, enabling higher switching frequency
Fall Time (typical)4.5 ns100 nsFaster fall time on 2EDF9275FXUMA1 improves switching losses and reduces device stress
Switching Frequency (typical)2 MHzNot specified2EDF9275FXUMA1 explicitly rated for 2 MHz operation
Operating Temperature Range-40°C to 125°C-40°C to 100°C2EDF9275FXUMA1 supports higher max temperature
Mounting TypeSurface MountThrough Hole2EDF9275FXUMA1 is SMD, suitable for compact, automated assembly; HCPL-3120-000E through-hole for prototyping or legacy designs
Package CasePG-DSO-16-11 (16-SOIC)8-DIPDIP package on HCPL-3120-000E is larger, less dense
Isolation Voltage (RMS)1000 V (typ)3750 VrmsHCPL-3120-000E offers higher isolation voltage, beneficial for galvanic isolation
Common Mode Transient Immunity (CMTI)150 V/ns (typ)25 kV/µs (equiv. 25 V/ns)HCPL-3120-000E has significantly higher CMTI, improving noise immunity in harsh environments
Input Current Max (DC forward)50 mA25 mA2EDF9275FXUMA1 tolerates higher input current
Propagation Delay (typical)35–37 ns (turn on/off)500 ns (max)2EDF9275FXUMA1 is ~15x faster, reducing timing uncertainty
Pulse Width Distortion MaxNot specified300 nsHCPL-3120-000E’s optical nature introduces more timing distortion
Output Voltage Range4.5–20 V15–30 VHCPL-3120-000E supports higher output voltage but narrower input voltage range
Input UVLO Threshold (typ)3.5 VNot specifiedEnsures driver disables below 3.5 V supply to prevent malfunction (2EDF9275FXUMA1)
Output UVLO Threshold (typ)3.2 V (min)Not specified2EDF9275FXUMA1 protects downstream MOSFET gate with output UVLO
Short-Circuit Current Max500 mANot specified2EDF9275FXUMA1 provides short-circuit protection
Isolation Test Voltage (min)1500 V (functional), 5700 V (min)3750 Vrms2EDF9275FXUMA1 functional and surge isolation voltages exceed HCPL-3120-000E RMS rating
Thermal Resistance Junction-to-Case25 °C/W (min)Not specified2EDF9275FXUMA1 provides thermal resistance data to aid thermal design
ESD Capability (HBM)2 kV (typ)Not specified2EDF9275FXUMA1 has specified ESD ratings
Supply Current (typical)1.4 mA (VDD), 1.6 mA (VDDI)Not specifiedLower current consumption on 2EDF9275FXUMA1 likely
Package Size6 mm × 3.2 mm (max)7.62 mm × 7.62 mm (DIP)2EDF9275FXUMA1 is smaller and suitable for space-constrained applications

Design trade-offs

The 2EDF9275FXUMA1 is tailored for high-performance, high-frequency switching applications involving half-bridge configurations with fast switching SiC MOSFETs or IGBTs. Its 4 A sourcing and 8 A sinking peak currents, combined with sub-10 ns rise/fall times, enable efficient gate drive at switching frequencies up to 2 MHz, reducing switching losses and improving efficiency. The fast propagation delay (~35 ns) offers precise timing control, minimizing dead-time and cross-conduction risk in half-bridge topologies.

In contrast, the HCPL-3120-000E uses optical coupling technology, providing galvanic isolation with a higher isolation voltage (3750 Vrms) and significantly better common mode transient immunity (25 kV/µs vs 150 V/ns). However, the trade-off is slower switching speeds (rise/fall times ~100 ns, propagation delay up to 500 ns) and limited peak current (2.5 A max), restricting its use to lower frequency or less demanding switching scenarios. The optical isolator also introduces pulse-width distortion and higher propagation delay variance, which complicates timing-critical designs.

Thermally, the 2EDF9275FXUMA1’s specified junction-to-case thermal resistance allows better thermal management calculations, critical when driving high gate currents at MHz switching rates. The HCPL-3120-000E’s lack of detailed thermal specs and through-hole package generally imply higher thermal resistance and larger PCB footprint, affecting compactness and thermal dissipation strategies.

From a layout perspective, the 2EDF9275FXUMA1’s surface-mount PG-DSO-16-11 package supports compact, automated assembly suitable for modern power modules. Its integrated half-bridge design reduces component count and simplifies gate drive circuitry. The HCPL-3120-000E’s through-hole 8-DIP package is bulkier and less amenable to high-density layouts but easier to prototype and replace manually.

In volume production, the 2EDF9275FXUMA1’s complexity and advanced features may translate to higher unit cost but deliver system-level savings via higher efficiency and smaller BOM. The HCPL-3120-000E, being older technology with simpler function, might be less expensive per unit but may require additional isolation components or slower switching margins.

Use-case fit

Choose 2EDF9275FXUMA1 when…