Renesas PS9031-Y-AX

Overview

PS9031-Y-AX from Renesas Electronics is a 5-pin SOP photovoltaic gate driver IC with integrated GaAlAs LED input and high-speed power MOSFET output stage, delivering 2.5 A peak output current, ±50 kV/µs common-mode transient immunity, and UVLO protection with 1.3 V hysteresis - designed for IGBT gate driving in industrial inverters and AC servo systems.

For engineers reviewing the PS9031-Y-AX datasheet, PS9031-Y-AX pinout, PS9031-Y-AX application, or PS9031-Y-AX equivalent, this page delivers verified technical context, real-world design meaning of key specs (e.g., tPLH/tPHL ≤ 175 ns, 8 mm creepage), and validated alternative options for high-reliability isolated gate drive implementations.

Technical Context

The PS9031-Y-AX implements an optically isolated, single-channel gate driver architecture: input-side GaAlAs LED couples to on-chip photodiode and signal processing circuitry, which drives complementary high- and low-side power MOSFETs on the output side. It operates with 15–30 V supply (VCC–VEE), supports up to 200 kHz switching frequency, and integrates under-voltage lockout with hysteresis (VUVLO+ = 12.3 V typ., VUVLO− = 11.0 V typ.).

Its isolation barrier meets UL1577 (double protection), CSA C22.2 No.60950-1 (reinforced insulation), and optional VDE 0884-5 certification. The device features active high/low output control logic, 0.2 V typical VOL at 100 mA, and 2.2 A typical IOH at VO = VCC − 4 V - enabling direct drive of medium-power IGBTs without external buffer stages.

Key Specifications

Pinout & Package

PS9031-Y-AX uses a 5-pin LSO5 (Low-Profile Small Outline) package with 8 mm minimum creepage distance, 0.119 g typical weight, and Pb-free/Ni/Pd/Au plating. The package complies with JEDEC MS-012AC and supports infrared reflow (peak 260 °C, ≤10 s).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar IGBT gate driver applications.

Compared with TLP350 and ACPL-332J, PS9031-Y-AX delivers superior noise immunity (±50 kV/µs vs. ≤35 kV/µs), tighter propagation matching (<90 ns skew vs. >120 ns), and certified reinforced insulation - making it the preferred choice for 125 °C-rated industrial inverters requiring zero-failure gate drive reliability.

Availability

PS9031-Y-AX is available at Aetrix Electronics and suitable for industrial inverters, AC servo drives, solar PV inverters, and UPS power stages requiring stable component supply, long-term lifecycle support, and certified reinforced insulation.

Supply support for PS9031-Y-AX includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics is a global semiconductor leader specializing in microcontrollers, analog, power, and mixed-signal solutions for industrial, automotive, and infrastructure markets.

The PS9031-Y-AX belongs to Renesas' high-CMR photocoupler product line, engineered specifically for robust, high-speed isolated gate driving in harsh electromagnetic environments of motor control and power conversion systems.

FAQ

What is the maximum recommended gate capacitance load for PS9031-Y-AX?

The PS9031-Y-AX is characterized for gate loads up to 10 nF with Rg = 10 Ω, achieving tPLH/tPHL ≤ 175 ns. Driving larger capacitances (e.g., >15 nF) increases propagation delay and pulse width distortion beyond specification limits; external gate buffers are required for IGBTs with Qg > 150 nC at 30 V supply. PS9031-Y-AX data confirms stable operation only within the 10 nF test condition.

Does PS9031-Y-AX support both high-side and low-side IGBT configurations?

Yes, PS9031-Y-AX supports both configurations via its push-pull output stage referenced to VEE. For high-side drive, VEE connects to the IGBT emitter (floating), and VCC supplies the required gate bias relative to that node. The device's 30 V max VCC–VEE rating and 125 °C operation enable direct use in bootstrap or isolated DC-DC based high-side topologies. PS9031-Y-AX's internal architecture inherently supports either configuration without modification.

How does the UVLO function behave during power-up of PS9031-Y-AX?

During power-up, PS9031-Y-AX remains disabled until VCC reaches VUVLO+ (12.3 V typ.). Once enabled, it stays active until VCC falls below VUVLO− (11.0 V typ.), providing 1.3 V hysteresis to prevent oscillation. This behavior is confirmed in Figure 11 of the datasheet and ensures the IGBT gate remains firmly off during insufficient supply conditions. PS9031-Y-AX's UVLO circuit operates independently of input LED status.

Can PS9031-Y-AX replace PS9031-F3 in existing designs?

Yes, PS9031-Y-AX and PS9031-F3 share identical electrical specifications, pinout, and thermal performance; the difference lies only in packaging (20 pcs tape-cut vs. 3000 pcs embossed reel). No PCB or schematic changes are needed. PS9031-Y-AX is the standard-order variant for prototyping and low-volume builds, while PS9031-F3 targets high-volume automated assembly - both are functionally interchangeable.

What safety certifications apply to PS9031-Y-AX?

PS9031-Y-AX carries UL1577 (Double Protection) and CSA C22.2 No.60950-1 (Reinforced Insulation) certifications as standard. The VDE 0884-5 option (DIN EN 60747-5-5) is available under part number PS9031-Y-V-AX. All certifications cover the full 8 mm creepage and 5000 Vrms isolation barrier. PS9031-Y-AX documentation explicitly lists these approvals in the Ordering Information table.