Renesas PS9506L2-AX

Overview

PS9506L2-AX from Renesas Electronics is an 8-pin surface-mount gull-wing photocopler optimized for IGBT and power MOSFET gate driving in high-noise industrial inverters and induction heating systems. It delivers 0.6 A peak output current, achieves ≤0.4 μs propagation delay (tPLH/tPHL), and sustains ±25 kV/μs common-mode transient immunity (CMH/CML) across −40°C to +110°C ambient operation.

For engineers reviewing the PS9506L2-AX datasheet, PS9506L2-AX pinout, PS9506L2-AX application, or PS9506L2-AX equivalent, this device is selected for high-CMR isolated gate drive where long creepage distance (8 mm minimum), Pb-free compliance, and UL/CSA/VDE safety certification are mandatory in motor drives and power conversion designs.

Technical Context

The PS9506L2-AX integrates a GaAlAs LED input stage with a monolithic photo-diode, signal processor, and power output transistor on a single chip. Its dual-transistor output stage provides complementary high-side and low-side switching capability with rail-to-rail VO swing (0 to VCC) and fast edge control (tr/tf ≤ 50 ns).

Designed for high dv/dt environments, it employs internal shielding and optimized internal layout to achieve ≥25 kV/μs CMR at both logic-high and logic-low output states under 1.5 kV common-mode step transients. The gull-wing lead bending ensures 8 mm minimum outer creepage distance while enabling surface-mount assembly.

Key Specifications

Pinout & Package

PS9506L2-AX uses an 8-pin gull-wing surface-mount DIP package with lead bending for extended creepage. Pin 1 (NC), Pin 2 (Anode), Pin 3 (Cathode), Pin 4 (NC), Pin 5 (VEE), Pin 6 (VO), Pin 7 (NC), Pin 8 (VCC). Shield connection is internal and tied to Pin 5 (VEE) reference.

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, PS9506L2-AX uniquely combines 0.6 A drive, 0.4 μs speed, 8 mm creepage, and ±25 kV/μs CMR in a single surface-mount package-making it the only option for high-reliability, safety-certified IGBT gate drive in compact industrial inverters.

Availability

PS9506L2-AX is available at Aetrix Electronics and suitable for industrial inverter motor drives, induction heating systems, and solar PV string inverters requiring stable component supply, long-term lifecycle support, and certified safety isolation.

Supply support for PS9506L2-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 PS9506L2-AX belongs to Renesas' high-CMR photocopler family engineered specifically for robust IGBT and MOSFET gate driving in noisy, high-voltage industrial power electronics.

FAQ

What is the maximum recommended forward current for continuous operation of the PS9506L2-AX LED input?

The PS9506L2-AX LED has a recommended forward current of 8–12 mA for reliable turn-on while maintaining long-term reliability. Absolute maximum continuous forward current is 25 mA, but sustained operation above 12 mA accelerates LED degradation and reduces isolation lifetime-especially at elevated temperatures. For optimal performance and safety certification retention, design to 10 mA nominal with appropriate series resistor tolerance and thermal derating.

Can PS9506L2-AX drive a 1200 V, 50 A IGBT directly without external buffer transistors?

The PS9506L2-AX delivers 0.6 A peak output current, which is sufficient for gate charging of many 1200 V IGBTs rated up to ~25 A in hard-switched applications. For 50 A devices, gate charge (Qg) typically exceeds 200 nC-requiring >2 A peak current for sub-100 ns turn-on. Therefore, PS9506L2-AX alone is insufficient for direct 50 A IGBT drive; a discrete buffer stage (e.g., complementary BJT pair) is required to meet dV/dt and switching loss targets.

Does PS9506L2-AX support both high-side and low-side IGBT configurations?

Yes-PS9506L2-AX features a push-pull output stage capable of both sourcing and sinking up to 0.6 A peak. When configured with VEE tied to system output ground and VCC referenced to the IGBT's positive gate supply, it directly drives low-side switches. For high-side drive, VEE must be referenced to the IGBT emitter (floating), requiring isolated gate supply rails-PS9506L2-AX provides the necessary isolation and drive strength but does not integrate the floating supply.

What is the significance of the "L2" suffix in PS9506L2-AX?

The "L2" suffix identifies the specific mechanical variant: lead-bending gull-wing surface-mount configuration with extended 8 mm minimum creepage distance. This distinguishes it from PS9506 (standard DIP), PS9506L1 (through-hole long-creepage), and PS9506L3 (gull-wing without extended creepage). The "-AX" denotes tape-and-reel packaging (1000 pcs/reel) with Pb-free Ni/Pd/Au plating.

How does PS9506L2-AX handle common-mode transients during IGBT switching?

PS9506L2-AX achieves ±25 kV/μs common-mode transient immunity (CMH/CML) via internal shield structure, optimized die layout, and differential detection circuitry. During fast collector-emitter voltage transitions (e.g., 1.5 kV/μs), the internal shield minimizes capacitive coupling into the LED and detector paths, preventing false output toggling. This is validated per IEC 60747-5-2 test conditions with VCM applied between input and output grounds.