FAN7392 - 600V Half-Bridge Gate-Drive IC | onsemi
MPN: FAN7392 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.62 | $16.20 |
| 100 | $1.28 | $128.00 |
| 500 | $1.05 | $525.00 |
| 1,000 | $0.88 | $880.00 |
FAN7392 Overview
A high-side gate driver (also called a half-bridge driver or bootstrap gate driver) is a critical analog IC in power-conversion topologies such as half-bridge, full-bridge, and three-phase inverters. Its function is to translate low-voltage PWM logic signals (typically 3.3V or 5V from a microcontroller) into high-voltage gate-drive signals referenced to a floating switching node that swings between ground and the high-voltage DC bus. The FAN7392 sits in the signal-chain hierarchy: MCU -> gate driver -> power switch (MOSFET/IGBT) -> load (motor, transformer, lamp), and is part of the broader power-management semiconductor family.
Key features include a floating channel rated for +600 V, gate-drive supply range of 10 V to 20 V (VBS), logic inputs compatible with 3.3 V and 5 V CMOS levels, under-voltage lockout (UVLO) for both VCC and VBS rails, and matched propagation delays between the high-side and low-side channels. The NMOS output buffer delivers 2.5 A source / 2.5 A sink typical peak current into the gate of the external power switch.
Technically, onsemi's high-voltage process and common-mode noise-canceling techniques provide stable operation of the high-side driver under high dV/dt transients on the VS switching node. A built-in bootstrap diode in some variants and external bootstrap capacitor on the VB pin supply the floating high-side rail, eliminating the need for an isolated gate-drive supply. Propagation delay is typically 130 ns with 30 ns channel-to-channel matching.
Typical applications include motor drives (BLDC, PMSM, induction motor variable-frequency drives), uninterruptible power supplies (UPS), switch-mode power supplies (SMPS), electronic ballasts for HID and LED drivers, and induction heating converters. The wide 600 V rating covers both 220 Vac and 380 Vac class industrial line voltages with adequate derating.
When designing with the FAN7392, choose bootstrap capacitor values per the datasheet formula based on switching frequency and MOSFET gate charge Qg. Place the bootstrap capacitor close to the VB and VS pins to reduce parasitic inductance, and keep the high-side traces away from the low-side signal return to minimize noise injection.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives (FAN7392N, FAN7392M, FAN7392MX), and practical half-bridge design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for FAN7392 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with FAN7392 (same form factor and footprint) — differing in Mounting Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
FAN7392N
✅ Drop-In📋 Reference alternative (not in catalog)
FAN7392M
✅ Drop-In📋 Reference alternative (not in catalog)
FAN7392MX
✅ Drop-In✓ In Stock
$1.16 / Unit
View Datasheet →FAN7393
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
IR2110PBF
✅ Drop-In📋 Reference alternative (not in catalog)
IR2113PBF
✅ Drop-In📋 Reference alternative (not in catalog)
FAN7392 Maximum Ratings & Electrical Characteristics
| Function | Half-bridge gate driver (high-side + low-side) |
| Topology Supported | Half-bridge, full-bridge, 3-phase inverter |
| Floating Channel Voltage (VB-VS) | +600 V (maximum) |
| VBS Supply Voltage | 10 V to 20 V |
| VCC Supply Voltage | 10 V to 20 V |
| Logic Input Voltage (HIN, LIN) | 3.3 V and 5 V CMOS compatible |
| Peak Source Current (HO) | 2.5 A (typical) |
| Peak Sink Current (LO) | 2.5 A (typical) |
| Propagation Delay (typ) | 130 ns |
| Channel-to-Channel Matching | 30 ns (typical) |
| UVLO Threshold (VCC/VBS) | Per datasheet (typical ~8 V) |
| Operating Temperature Range | -40 C to +125 C |
| Package (FAN7392) | 14-DIP (standard) |
| Package (FAN7392N) | 14-DIP |
| Package (FAN7392M / MX) | 14-SOIC surface-mount |
| Mounting Type | Through-hole (DIP) or Surface Mount (SOIC) |
| RoHS Status | Compliant |
| Output Configuration | Non-inverting, independent HIN/LIN inputs |
FAN7392 Pin Configuration
| Pin 1 | VCC — Low-side and logic supply voltage (10-20 V) |
| Pin 2 | HIN — Logic input for high-side gate driver |
| Pin 3 | LIN — Logic input for low-side gate driver |
| Pin 4 | GND — Ground reference for logic and low-side driver |
| Pin 5 | NC — Not connected (per datasheet) |
| Pin 6 | VS — High-side floating supply return / switch node |
| Pin 7 | VB — High-side floating supply (bootstrap) |
| Pin 8 | HO — High-side gate drive output |
| Pin 9 | NC — Not connected (per datasheet) |
| Pin 10 | NC — Not connected (per datasheet) |
| Pin 11 | LO — Low-side gate drive output |
| Pin 12 | NC — Not connected (per datasheet) |
| Pin 13 | NC — Not connected (per datasheet) |
| Pin 14 | VCC — Low-side and logic supply voltage (duplicate tie to pin 1) |
Typical Applications
FAN7392 is suitable for 7 applications: Three-Phase Motor Drive Inverter, Switch-Mode Power Supply (SMPS) Half-Bridge Converter, Uninterruptible Power Supply (UPS) Inverter Stage, Electronic Ballast for HID and LED Lighting, Induction Heating Cooktop Inverter, Solar Inverter DC-AC Stage, Industrial Welding Inverter.
Three-Phase Motor Drive Inverter
The FAN7392's 600 V floating channel and 2.5 A peak gate current make it well-suited for driving the high- and low-side IGBTs or MOSFETs in a three-phase inverter for BLDC, PMSM, and AC induction motor variable-frequency drives. The matched 30 ns channel-to-channel propagation delay minimizes dead-time distortion, improving THD and reducing torque ripple in FOC motor control. Six FAN7392 channels (or three FAN7382 three-phase drivers) generate the six PWM signals to the inverter bridge from 3.3 V MCU logic inputs, with bootstrap diodes and capacitors supplying the floating high-side rails.
Recommended
Switch-Mode Power Supply (SMPS) Half-Bridge Converter
In half-bridge SMPS topologies for telecom and server PSUs, the FAN7392 drives the primary-side MOSFETs up to 600 V with 2.5 A peak gate current, supporting switching frequencies from 50 kHz to 500 kHz. The 130 ns typical propagation delay preserves PWM duty-cycle accuracy required for tight output voltage regulation. The bootstrap high-side drive eliminates the need for an isolated gate-drive transformer, simplifying the LLC and phase-shift full-bridge converter designs used in 400 V input server power supplies.
Recommended
Uninterruptible Power Supply (UPS) Inverter Stage
Online UPS systems use double-conversion topologies where the inverter stage drives 220 Vac loads from a battery bus. The FAN7392's 600 V rating covers the battery-bus-derived DC link with adequate margin, while 2.5 A gate current ensures fast switching of the IGBT modules to minimize switching losses. Built-in UVLO on both VCC and VBS prevents partial-switching operation that could cause IGBT thermal runaway during low-battery conditions, enhancing overall UPS reliability.
Recommended
Electronic Ballast for HID and LED Lighting
Electronic ballasts for high-intensity discharge (HID) lamps and high-power LED drivers use half-bridge resonant converters operating from 110-277 Vac rectified DC buses up to 400 V. The FAN7392 drives the resonant tank MOSFETs with matched propagation delays that maintain zero-voltage-switching (ZVS) conditions, maximizing ballast efficiency. Its 3.3 V logic input compatibility enables direct connection to low-power MCU dimming controllers without level shifters.
Recommended
Induction Heating Cooktop Inverter
Residential induction cooktops require high-frequency inverters (20-100 kHz) driving coil-embedded MOSFETs at high currents. The FAN7392's 2.5 A gate current enables fast switching of high-Qg IGBTs and MOSFETs, minimizing switching losses and improving cooktop efficiency. The 600 V rating accommodates rectified 220 Vac mains with substantial transient headroom. Channel-to-channel matching helps maintain precise resonant tank operation required for uniform pan heating.
Recommended
Solar Inverter DC-AC Stage
String and micro solar inverters convert DC photovoltaic panel output (up to 600 V open-circuit) to AC mains. The FAN7392's 600 V rating aligns with the maximum Voc of residential PV strings, while its high-side bootstrap drive simplifies the isolated gate-drive circuitry typically required for transformerless topologies. Built-in UVLO protects against low-battery shutdown transients, and the 14-DIP package supports the through-hole assembly common in outdoor solar inverter enclosures.
Recommended
Industrial Welding Inverter
Industrial welding power supplies use high-current inverters with IGBT modules operating at 600 V and beyond. The FAN7392 drives the welding inverter's primary-side IGBTs with 2.5 A peak gate current, ensuring rapid switching transitions that minimize heat dissipation in the high-current welding arc. The matched channel-to-channel delay prevents cross-conduction in the welding inverter bridge, a common cause of catastrophic IGBT failure in heavy-duty welding applications.
Recommended
Recommended Products Summary
Engineering reference data for FAN7392 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | FAN7392N | FAN7392M | FAN7392MX | FAN7393 | IR2110PBF | IR2113PBF |
|---|---|---|---|---|---|---|---|
| Package | 14-DIP (FAN7392) | 14-DIP - same | 14-SOIC - same pin count | 14-SOIC - same pin count | 14-DIP - same | 14-DIP - same | 14-DIP - same |
| Brand | onsemi | onsemi | onsemi | onsemi | onsemi | Infineon | Infineon |
| Floating Channel Voltage (max) | +600 V | +600 V | +600 V | +600 V | +600 V | +500 V | +600 V |
| Peak Source/Sink Current | 2.5 A / 2.5 A | 2.5 A / 2.5 A | 2.5 A / 2.5 A | 2.5 A / 2.5 A | 4.5 A / 4.5 A | 2.0 A / 2.0 A | 2.0 A / 2.0 A |
| VCC/VBS Supply Range | 10 V to 20 V | 10 V to 20 V | 10 V to 20 V | 10 V to 20 V | 10 V to 20 V | 10 V to 20 V | 10 V to 20 V |
| Propagation Delay (typ) | 130 ns | 130 ns | 130 ns | 130 ns | 130 ns | 120 ns | 130 ns |
| Logic Input Compatibility | 3.3 V and 5 V CMOS | 3.3 V and 5 V CMOS | 3.3 V and 5 V CMOS | 3.3 V and 5 V CMOS | 3.3 V and 5 V CMOS | CMOS/TTL (logic-level thresholds) | CMOS/TTL (logic-level thresholds) |
| UVLO Protection | VCC and VBS | VCC and VBS | VCC and VBS | VCC and VBS | VCC and VBS | VCC only (VBS UVLO optional) | VCC and VBS |
| 1-piece Unit Price (USD, as of 2026-10-08) | $1.85 | $1.85 | $1.95 | $1.95 | $2.10 | $1.65 | $1.95 |
Key Differentiators
- Higher 600 V floating channel vs 500 V on legacy drivers (vs IR2110PBF)
- 2.5 A peak gate current vs 2.0 A on IR2110/IR2113 (vs IR2113PBF)
- Built-in UVLO on both VCC and VBS rails (vs IR2110PBF)
Design Notes
Estimated: The FAN7392 dissipates power primarily through its quiescent current (typically ~1 mA from VCC plus ~1 mA from VBS) and gate-drive charge current. At 100 kHz switching frequency with a 100 nC total gate charge (Qg), the average gate-drive current is ~10 mA per channel, or ~20 mA total for both channels. The bootstrap capacitor must be sized to supply this charge plus ripple tolerance; for a 100 kHz design with 10% allowable ripple, use a 1 uF X7R ceramic or larger.
Place the bootstrap capacitor (VB to VS) as close to the IC pins as possible, ideally within 5 mm, to minimize parasitic inductance that can cause VS undershoot and VB voltage collapse during switching. Keep the high-side traces (VB, VS, HO) physically separated from the low-side traces (VCC, GND, LO) to prevent capacitive coupling that can inject noise into the logic inputs and cause shoot-through.
The 14-DIP package has a theta_JA of approximately 80 C/W in still air and 50 C/W with modest copper pour. At 1 mA quiescent current from a 15 V supply, the quiescent dissipation is only 15 mW, so thermal issues are typically negligible. However, in surface-mount 14-SOIC designs with reduced copper area, derate carefully in high-ambient-temperature industrial environments above 85 C.
Do not operate the FAN7392 above the absolute maximum 600 V VB-VS rating, including inductive kickback transients from the switch node. Add a clamp diode or snubber circuit to limit VS undershoot below -5 V. Also ensure dead-time insertion in the MCU firmware or analog dead-time generator to prevent HIN and LIN simultaneous assertion, which causes shoot-through and catastrophic MOSFET failure.
Compliance Information
RoHS compliant per onsemi product page. Lead-free reflow compatible on SOIC variants. Not AEC-Q100 qualified - this is an industrial/commercial grade gate driver.
