Renesas PS9331L2-V-AX

Overview

PS9331L2-V-AX from Renesas Electronics is a 6-pin SDIP surface-mount photocopler optimized for IGBT gate driving in high-noise industrial inverters and servo systems. It delivers 2.5 A peak output current, achieves 175 ns max propagation delay, and sustains ±50 kV/μs common-mode transient immunity at 125 °C ambient operation.

For engineers reviewing the PS9331L2-V-AX datasheet, PS9331L2-V-AX pinout, PS9331L2-V-AX application, or PS9331L2-V-AX equivalent, key selection criteria include creepage distance (8 mm), UVLO thresholds (10.8–13.4 V), and isolation voltage rating (5,000 V_r.m.s.).

Technical Context

The PS9331L2-V-AX integrates a GaAlAs LED input stage with a monolithic output stage comprising photo-diode, signal processing circuitry, and power MOSFETs - enabling single-chip isolated gate drive without external level-shifting or buffering. Its architecture supports direct connection to IGBT gates with integrated under-voltage lockout (UVLO) and high-speed switching.

Designed for long creepage distance (8 mm minimum), it uses gull-wing lead bending for surface mounting and meets DIN EN 60747-5-5 (VDE 0884-5) isolation requirements as an option. The NC pin (Pin 2) must remain unconnected or tied to GND - not used for signal routing.

Key Specifications

Pinout & Package

PS9331L2-V-AX uses a 6-pin Shrink Dual In-line Package (SDIP) with gull-wing leads for surface mounting. Package dimensions: 11.5 × 6.8 × 4.58 mm (L×W×H), 0.25 mm lead thickness, 1.27 mm pitch, and 8 mm minimum outer creepage distance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLP350(D,F) and ACPL-332J, PS9331L2-V-AX provides superior timing precision and integrated UVLO - making it optimal for high-efficiency, high-reliability 15–20 kHz motor drives requiring tight dead-time control and robust fault protection.

Availability

PS9331L2-V-AX is available at Aetrix Electronics and suitable for industrial inverters, AC servo systems, solar PV converters, and UPS power stages requiring stable component supply, long-term lifecycle assurance, and safety-certified isolation.

Supply support for PS9331L2-V-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 automotive, industrial, and infrastructure markets.

The PS9331L2-V-AX belongs to Renesas' high-CMR photocopler family designed specifically for reliable, high-speed IGBT and MOSFET gate driving in harsh electromagnetic environments such as factory automation and renewable energy systems.

FAQ

What is the maximum recommended forward current for PS9331L2-V-AX?

The absolute maximum forward current (IF) for PS9331L2-V-AX is 25 mA, but the recommended operating condition specifies 8–12 mA. Operating within this range ensures optimal LED lifetime, stable CTR, and consistent switching performance across −40 to +125 °C ambient temperatures. Exceeding 12 mA continuously may accelerate LED degradation without improving output drive capability.

Does PS9331L2-V-AX require an external bypass capacitor?

Yes, PS9331L2-V-AX requires a ≥1.0 μF bypass capacitor between VCC and VEE, placed within 10 mm of the device. This stabilizes the output supply rail during high-current gate switching events and suppresses voltage spikes that could trigger false UVLO activation or degrade CMR performance. Ceramic or low-ESR tantalum capacitors are recommended.

Can Pin 2 (NC) of PS9331L2-V-AX be used as a ground connection?

Pin 2 is designated NC (No Connection) and may be left floating or connected to VEE (GND) on the output side - but must never be used for signal routing, shielding, or as a return path for other circuits. Using Pin 2 for unintended purposes risks degrading internal noise immunity and violating isolation barrier integrity, as confirmed in the "Usage Cautions" section of the PS9331L2-V-AX datasheet.

What safety certifications does PS9331L2-V-AX hold?

PS9331L2-V-AX is UL approved (E72422), CSA approved (CA 101391), and SEMKO approved (EN 60065, EN 60950). It also offers an optional DIN EN 60747-5-5 (VDE 0884-5) certification for reinforced isolation - verified via partial discharge testing at 2,119 V_peak. These approvals apply specifically to the PS9331L2-V-AX variant with its 8 mm creepage configuration.

How does the UVLO function protect the IGBT when using PS9331L2-V-AX?

The PS9331L2-V-AX UVLO circuit disables the output stage when VCC falls below 9.5–11.0 V (VUVLO−) and re-enables it above 10.8–13.4 V (VUVLO+), with 0.4–1.3 V hysteresis. This prevents weak or oscillatory gate drive during power-up, brown-out, or fault conditions - eliminating IGBT shoot-through and ensuring safe, monotonic turn-on behavior critical for motor drive reliability.