STGAP2SICSNCTR vs 2EDN8534RXTMA1 Gate Driver ICs: Component Comparison
Quick verdict
For isolated high-voltage gate driving with galvanic isolation and high transient immunity, the STGAP2SICSNCTR is the clear choice, offering 4800 V peak isolation and capacitive coupling technology suited for industrial or grid-level applications. For non-isolated low-side MOSFET or GaN FET gate drive in compact, thermally demanding designs requiring fast switching and higher peak drive current, the 2EDN8534RXTMA1 outperforms with 5 A peak drive, wider supply voltage range, and lower rise/fall times.
Spec comparison table
| Spec | STGAP2SICSNCTR | 2EDN8534RXTMA1 | Notes |
|---|---|---|---|
| Channel count | 1 | 2 | 2EDN8534RXTMA1 offers dual drivers, useful for half-bridge or complementary outputs. |
| Isolation voltage (peak) | 4800 Vpk (typ) | None (non-isolated) | STGAP2SICSNCTR provides galvanic isolation needed in high-voltage systems. |
| Isolation voltage (RMS) | 3394 Vrms (typ) | None | Isolation RMS voltage only relevant for STGAP2SICSNCTR. |
| Isolation technology | Capacitive Coupling | None | ST uses capacitive coupling for isolation; Infineon is a standard non-isolated driver. |
| Supply voltage range (VDD/VH) | VDD logic: 3.1–5.5 V typical, max 6.5 V; VH: 13.9–28 V | 4.5 V to 20 V | 2EDN8534RXTMA1 supports higher supply voltage range, enabling more flexible bus voltages. |
| Peak output current (source/sink) | 4 A (typical source at 25°C) | 5 A / 5 A | 2EDN8534RXTMA1 offers 25% higher peak current, better for driving large gate charge devices faster. |
| Rise/Fall time (typical) | 30 ns / 30 ns | 8.6 ns / 6 ns | 2EDN8534RXTMA1 is significantly faster, reducing switching losses in high-frequency designs. |
| Operating temperature range (TJ) | -40°C to 125°C | -40°C to 150°C | 2EDN8534RXTMA1 supports wider thermal range, beneficial for harsh environments. |
| Package | 8-SOIC (3.9 mm width) | 8-TSSOP (3.0 mm width) | 2EDN8534RXTMA1 is smaller footprint, better for space-constrained designs. |
| Input logic thresholds (VIH/VIL) | VIH: 0.62–0.70 × VDD; VIL: 0.29–0.37 × VDD | VIH: 1.9 V; VIL: 1.4 V | ST is compatible with standard CMOS/TTL logic levels; Infineon has fixed thresholds, less tolerant of lower voltages. |
| Common-mode transient immunity (CMTI) | ±100 V/ns (min) | Not specified | ST device is specified for high CMTI, important for noisy high-voltage environments. |
| ESD HBM rating | 2 kV | Not specified | ST device provides explicit ESD rating; Infineon datasheet does not specify. |
| Propagation delay (typical) | 75 ns (input to output) | Not specified | ST provides detailed propagation delay; Infineon datasheet lacks this info publicly. |
| Safe state output | Yes (SafeClp clamp active) | No | ST device provides a safe state output for fault tolerance. |
| Deglitch filter time | 20–40 ns | Not specified | ST device includes configurable glitch filtering, reducing false triggering. |
| Gate driver output voltage range | -1700 V to +1700 V (operating) | Up to bootstrap voltage 20 V | ST device supports high-voltage rail drives; Infineon limited to low-voltage non-isolated. |
| Thermal resistance (junction to ambient) | 123 °C/W | Not specified | ST device thermal data available; Infineon not specified, likely better due to smaller package and higher TJ max. |
| Junction temperature max | 150 °C | 150 °C | Both rated to 150°C max junction temperature. |
| Quiescent current (typical) | VDD: ~1.0–1.3 mA; VH: ~1.3–1.8 mA | Not specified | ST device quiescent current specified; Infineon datasheet does not provide this. |
| Standby current | ~40–65 µA (VDD), ~400–550 µA (VH) | Not specified | ST device supports low standby current modes. |
| Number of drivers | 1 | 2 | Infineon supports dual independent drivers, useful for half-bridge or redundancy. |
| Mounting type | Surface Mount | Surface Mount | Both suitable for automated PCB assembly. |
| Package width | 3.9 mm | 3.0 mm | Infineon is smaller footprint, better for compact layouts. |
| Voltage supply logic max/min | Max 6.5 V / Min -0.3 V | 20 V / 4.5 V | Infineon supports wider supply voltage range; ST is limited to lower logic voltages. |
Design trade-offs
The STGAP2SICSNCTR is a specialized isolated high-voltage gate driver optimized for applications requiring galvanic isolation up to 4800 V peak and high common-mode transient immunity (100 V/ns). The capacitive coupling isolation technology ensures robust noise immunity and safety compliance in industrial, traction, or grid-tied inverter applications. However, it only provides a single channel and a moderate 4 A peak drive current, which may limit its use in multi-phase systems unless multiple devices are used.
In contrast, the 2EDN8534RXTMA1 lacks galvanic isolation but offers dual independent channels with higher peak output current (5 A source and sink), significantly faster rise/fall times (6–8.6 ns typical), and a wider supply voltage range (4.5 to 20 V). This makes it better suited for compact, non-isolated low-side MOSFET or GaN FET gate drive where switching speed and drive strength directly affect efficiency and thermal performance. The smaller PG-TSSOP-8 package reduces PCB area and may aid thermal dissipation in well-designed layouts.
From a layout perspective, the STGAP2SICSNCTR demands careful placement of decoupling capacitors (100 nF and 1–10 µF) as close as possible to the device pins and capacitive coupling layers to maintain isolation integrity and transient immunity. It also requires maintaining a minimum creepage and clearance distance (4 mm external air gap). The Infineon part, being non-isolated, simplifies PCB layout but requires careful attention to ground referencing and EMI mitigation.
Thermally, the ST device’s high thermal resistance (123 °C/W) and moderate peak current suggest it is better suited for intermittent or lower frequency switching, or designs where the isolated driver is mounted on a dedicated isolated PCB section. The Infineon device’s higher junction max temperature (150°C) and better switching speed favor high-frequency and thermally constrained designs.
Cost-wise, the STGAP2SICSNCTR’s isolation and certification (UL, VDE) add to its price and complexity; the 2EDN8534RXTMA1 is generally less expensive and more straightforward to implement where isolation is not required.
Use-case fit
Choose STGAP2SICSNCTR when…
- You need galvanic isolation with 4800 V peak withstand for industrial motor drives, power inverters, or grid-tied converters.
- Your system operates in high common-mode transient environments (>100 V/ns), requiring robust noise immunity.
- The application demands a safe state output and integrated Miller clamp for fault tolerance.
- You require certified isolation components (UL, VDE compliance) for regulatory or safety standards.
- Your design prioritizes a single-channel isolated driver for driving high-voltage SiC or IGBTs with a 1 MHz switching frequency ceiling.
Choose 2EDN8534RXTMA1 when…
- You are designing non-isolated low-side gate drivers for MOSFETs or GaN FETs in DC-DC converters or motor control.
- High switching speed and low rise/fall times (6–9 ns) are critical to minimizing switching losses.
- A dual-channel driver is needed for half-bridge or redundant gate drive configurations.
- Your system supply voltage varies up to 20 V, requiring a wide input voltage range.
- You have space constraints and need a