NCV5703CDR2G - High-Current IGBT Gate Driver, SOIC-8 | onsemi
MPN: NCV5703CDR2G ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.25 | $2.25 |
| 10 | $1.98 | $19.80 |
| 100 | $1.64 | $164.00 |
| 500 | $1.32 | $660.00 |
| 1,000 | $1.12 | $1,120.00 |
NCV5703CDR2G Overview
A gate driver IC (also called a gate driver or IGBT driver) sits between a low-power controller such as an MCU, DSP, or FPGA and the gate of a power switch. The driver's job is to translate the controller's logic-level PWM signal into a high-current drive that can rapidly charge and discharge the IGBT's gate capacitance, minimizing switching losses and preventing shoot-through. Within the broader power electronics hierarchy, the NCV5703CDR2G is a half-bridge gate driver, itself a member of the gate driver family, which belongs to the power management IC category of semiconductors.
Key differentiating features include an integrated Active Miller Clamp, built-in DESAT (desaturation) short-circuit protection, and an under-voltage lockout (UVLO) on the driver supply. The non-inverting input logic simplifies MCU interface design, while the wide VCC operating range and automotive-grade qualification make the device suitable for PTC heaters, EV chargers, solar inverters, induction heating, and motor drive stages.
The NCV5703 series uses a high-speed CMOS input stage coupled with a high-current totem-pole output structure. The 8-pin SOIC footprint is small for its drive strength, and the device's high dV/dt immunity combined with internal negative gate drive capability improves dv/dt-induced turn-on robustness. The integrated Active Miller Clamp suppresses parasitic turn-on caused by the IGBT's Miller capacitance during high-voltage transitions.
Typical applications include EV onboard chargers, PTC heater drives for cabin heating, industrial motor drives, solar string inverters, induction heating cookers, and uninterruptible power supplies. In each case, the NCV5703CDR2G provides the high-current gate charge and discharge needed to switch high-voltage IGBTs efficiently.
A key design consideration is the trade-off between the small SOIC-8 footprint and the multi-ampere drive currents; designers must ensure adequate PCB copper area for thermal dissipation and short gate-drive traces to minimize parasitic inductance.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for NCV5703CDR2G — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
NCD5703DR2G
✅ Drop-In📋 Reference alternative (not in catalog)
NCV5700DR2G
✅ Drop-In📋 Reference alternative (not in catalog)
NCV5703DR2G
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
NCD5700DR2G
✅ Drop-In📋 Reference alternative (not in catalog)
NCV5703BDR2G
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
NCV5703CDR2G Maximum Ratings & Electrical Characteristics
| Driver Type | High-Side, Low-Side (Half-Bridge) IGBT Gate Driver |
| Input Logic | Non-Inverting |
| Number of Channels | 2 (high-side + low-side) |
| Package | 8-SOIC |
| Under-Voltage Lockout (UVLO) | Yes |
| DESAT Short-Circuit Protection | Yes |
| Active Miller Clamp | Yes |
| Operating Temperature Range | -40 C to +125 C |
| Automotive Qualification | AEC-Q100 |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead-Free | Yes |
NCV5703CDR2G Pin Configuration
| Pin 1 | IN_H — High-side non-inverting input |
| Pin 2 | IN_L — Low-side non-inverting input |
| Pin 3 | GND — Ground |
| Pin 4 | DESAT — Desaturation (short-circuit) protection input |
| Pin 5 | VCC — Driver supply voltage |
| Pin 6 | OUT_L — Low-side gate drive output |
| Pin 7 | OUT_H — High-side gate drive output |
| Pin 8 | VBS — Bootstrap supply for high-side driver |
Typical Applications
NCV5703CDR2G is suitable for 6 applications: Electric Vehicle On-Board Charger (OBC), Automotive PTC Heater Drive, Industrial Motor Drive Inverter, Solar String Inverter, Induction Heating Cooker, Uninterruptible Power Supply (UPS) Inverter.
Electric Vehicle On-Board Charger (OBC)
The NCV5703CDR2G is ideal for the IGBT half-bridge stages of EV on-board chargers because its AEC-Q100 qualification satisfies automotive reliability requirements while its non-inverting logic simplifies MCU PWM interface. Its integrated Active Miller Clamp suppresses parasitic turn-on of the high-side IGBT during the high dV/dt transitions typical of 400 V to 800 V OBC PFC and DCDC stages, reducing switching losses and EMI. The half-bridge topology matches the NCV5703's high-side + low-side drive structure, and the wide supply range supports common 15 V driver rails. Designers should keep gate-drive loop areas to a minimum and use 1 oz or 2 oz copper pours beneath the SOIC-8 thermal pad to dissipate the multi-ampere drive current.
Recommended
Automotive PTC Heater Drive
PTC cabin heaters in EVs use high-current IGBTs switched at low frequency to drive resistive PTC elements, and the NCV5703CDR2G fits this role with its multi-ampere source/sink capability and AEC-Q100 automotive qualification. The non-inverting input allows direct PWM from an automotive MCU without extra logic inversion. The integrated DESAT short-circuit protection safeguards the IGBT in the event of a load fault, while the UVLO ensures clean start-up and shut-down on the 12 V automotive supply rail, including cold-crank and load-dump transients. The -40 C to +125 C operating range covers the under-hood thermal envelope.
Recommended
Industrial Motor Drive Inverter
In three-phase motor drive inverters, the NCV5703CDR2G drives each half-bridge IGBT leg with high peak gate current for fast switching, minimizing switching losses and improving inverter efficiency. The integrated Miller clamp prevents shoot-through from Miller-induced gate spikes on the high-side IGBT, which is critical at high dV/dt. Industrial designers often run the NCV5703 from a 15 V or 18 V isolated supply with bootstrap for the high-side channel. Pin-compatible replacements such as the onsemi NCD5703DR2G allow easy migration between industrial and automotive inverter platforms.
Recommended
Solar String Inverter
Solar string inverters use IGBT half-bridge stages for DC-DC boost and DC-AC inversion, and the NCV5703CDR2G provides the high-current gate drive needed to switch 600 V to 1200 V IGBT modules at tens of kilohertz. The integrated DESAT protection is essential for detecting IGBT short-circuits during a module failure, allowing the controller to shut down the bridge before catastrophic damage. The wide VCC operating range supports 15 V to 18 V driver rails commonly used in solar inverter designs, and the SOIC-8 footprint keeps the gate-driver PCB area small.
Recommended
Induction Heating Cooker
Induction heating cookers drive a high-frequency resonant LC tank through a half-bridge IGBT stage at 20 kHz to 100 kHz, and the NCV5703CDR2G's high peak source/sink current keeps switching losses low at these frequencies. The integrated Active Miller Clamp is especially valuable in the high-dV/dt induction heating environment where Miller-induced turn-on would otherwise cause shoot-through. The 8-SOIC footprint allows compact PCB layouts typical of consumer induction cooktops, and the wide supply range supports common 15 V driver rails. Cross-brand alternatives such as TI UCC21732 family may be evaluated but require pin-out verification.
Recommended
Uninterruptible Power Supply (UPS) Inverter
UPS inverters use IGBT half-bridge stages to convert battery DC to 50/60 Hz AC for critical loads, and the NCV5703CDR2G's half-bridge topology matches this architecture directly. Its multi-ampere drive strength accelerates gate charge transfer on large 600 V or 1200 V IGBT modules used in commercial UPS systems, reducing switching losses and improving overall inverter efficiency. The DESAT short-circuit protection provides fast fault detection if an IGBT fails short, allowing the UPS to isolate the inverter leg before the fault cascades. The AEC-Q100 qualification provides additional margin in UPS designs that operate in elevated-temperature environments.
Recommended
Recommended Products Summary
Engineering reference data for NCV5703CDR2G — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | NCD5703DR2G | NCV5700DR2G | NCV5703DR2G | NCD5700DR2G | NCV5703BDR2G |
|---|---|---|---|---|---|---|
| Package | SOIC-8 | SOIC-8 (same) | SOIC-8 (same) | SOIC-8 (same) | SOIC-8 (same) | SOIC-8 (same) |
| Brand | onsemi | onsemi (same) | onsemi (same) | onsemi (same) | onsemi (same) | onsemi (same) |
| Driver Configuration | Half-Bridge (HS+LS) | Half-Bridge (HS+LS) - same | Half-Bridge (HS+LS) - same | Half-Bridge (HS+LS) - same | Half-Bridge (HS+LS) - same | Half-Bridge (HS+LS) - same |
| Automotive Qualification | AEC-Q100 | Industrial only (no AEC-Q100) | AEC-Q100 | AEC-Q100 | Industrial only | AEC-Q100 |
| Active Miller Clamp | Yes | Yes | No | Yes | No | Yes |
| DESAT Protection | Yes | Yes | No | Yes | No | Yes |
| UVLO | Yes | Yes | Yes | Yes | Yes | Yes |
| Input Logic | Non-Inverting | Non-Inverting | Non-Inverting | Non-Inverting | Non-Inverting | Non-Inverting |
| Operating Temperature | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C |
Key Differentiators
- Integrated Active Miller Clamp (vs NCV5700DR2G)
- Integrated DESAT short-circuit protection (vs NCV5700DR2G)
- Automotive grade qualification (vs NCD5703DR2G)
Design Notes
Estimated: at continuous DC output current of 4 A peak (typical high-side/low-side drive) and VCC = 15 V with switching frequency 20 kHz, average power dissipation in the SOIC-8 package is approximately 0.3-0.5 W depending on IGBT gate charge. The SOIC-8 has a typical theta_JA of 120-150 C/W on a 1 oz 4-layer PCB; a 1 square inch copper pour beneath the package reduces theta_JA to roughly 80 C/W. For high-frequency (>50 kHz) or high-current (>4 A peak) operation, use multiple thermal vias and 2 oz copper to keep junction temperature below 125 C.
Keep gate-drive loop areas (VCC to OUT to IGBT gate and back) as small as possible to minimize parasitic inductance that causes ringing and possible overshoot on the IGBT gate. Use a ground plane on layer 2 directly beneath the gate driver and route the high-current gate-drive return on the same layer as the driver. Place the bootstrap capacitor for VBS as close to pins 5 and 8 as possible with a short, wide trace. Add a 100 nF ceramic bypass capacitor directly across VCC to GND (pin 5 to pin 3) for high-frequency decoupling.
Do not exceed the maximum VCC supply voltage rating - typically 25 V for the NCV5703 family. Verify bootstrap capacitor voltage rating (often 50 V or higher) since VBS sees high-side floating supply transients. Ensure DESAT blanking time is properly tuned with the external RC network to avoid false triggering during normal turn-on. The NC prefix indicates automotive qualification; verify PPAP documentation is on file if designing for an automotive OEM. Do not substitute the industrial NCD5703 into an automotive design without re-qualifying the design.
Route the high-side gate drive trace (VBS to OUT_H) over a continuous ground plane to avoid coupling from the high-voltage DC bus. Use 4-layer PCB stackup with dedicated ground and power planes; if 2-layer is unavoidable, use a star-ground topology with the driver ground returned to the IGBT emitter Kelvin terminal. Keep analog signal traces (DESAT, IN_H, IN_L) at least 5 mm away from switching nodes (OUT_H, OUT_L) to avoid capacitive coupling that can inject noise into the protection circuit. Per onsemi NCV5703 datasheet typical application circuit, place the DESAT diode and RC network within 5 mm of pin 4.
Compliance Information
AEC-Q100 qualified per onsemi NC prefix designation. RoHS and REACH compliant per onsemi product page. PPAP documentation available on request for automotive OEM designs.
