Renesas PS9505-V-AX

Overview

PS9505-V-AX from Renesas Electronics is a high-speed, 2.5 A peak output current, 8-pin DIP photocopler optimized for IGBT and power MOSFET gate driving in industrial inverters and induction heating systems. It integrates a GaAlAs LED input stage with a photo-diode, signal processing circuit, and power output transistor on a single chip, featuring ±25 kV/μs common-mode transient immunity and UVLO protection with hysteresis.

For engineers reviewing the PS9505-V-AX datasheet, PS9505-V-AX pinout, PS9505-V-AX application, or PS9505-V-AX equivalent, key selection criteria include its 0.25 μs max propagation delay, 30 V max supply voltage range, 8 mm creepage distance (VDE option), and compliance with UL, CSA, SEMKO, and DIN EN60747-5-2 (VDE0884 Part 2) safety standards.

Technical Context

The PS9505-V-AX implements a dual-transistor output stage (Tr.1/Tr.2) enabling push-pull gate drive capability with independent high- and low-level output control. Its internal UVLO circuit monitors VCC–VEE with 12.3 V turn-on and 11.0 V turn-off thresholds and 1.3 V hysteresis, preventing erroneous switching during undervoltage conditions.

Designed for high-noise motor drive environments, it achieves ±25 kV/μs CMR at both high- and low-level outputs using internal shielded construction and optimized die layout. The device operates across −40°C to +110°C ambient temperature and supports up to 50 kHz switching frequency with 10 μs pulse width and 0.2% duty cycle limits for peak output current.

Key Specifications

Pinout & Package

PS9505-V-AX uses an 8-pin plastic DIP (dual in-line package) with 2.54 mm lead pitch and 7 mm minimum air/creepage distance. Pin 1 and Pin 4 are NC (no connection); Pins 2 and 3 form the LED anode/cathode; Pins 5 (VEE), 6/7 (VO), and 8 (VCC) constitute the output side with dual VO pins for high-current path redundancy.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ACPL-332J-000E and SI8233AD-D-IS, PS9505-V-AX delivers superior noise immunity (±25 kV/μs vs. 15–35 kV/μs), certified reinforced isolation, and integrated UVLO-making it optimal for high-reliability industrial motor drives where optical simplicity and safety compliance are mandatory.

Availability

PS9505-V-AX is available at Aetrix Electronics and suitable for industrial inverters, induction heating systems, and solar inverter gate drive circuits requiring stable component supply, long-term lifecycle support, and certified safety compliance.

Supply support for PS9505-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 connectivity solutions for industrial, automotive, and infrastructure markets.

The PS9505-V-AX belongs to Renesas' high-CMR photocopler product line, engineered specifically for robust IGBT/MOSFET gate driving in harsh electrical environments such as variable-frequency drives and resonant power converters.

FAQ

What is the maximum recommended forward current for the PS9505-V-AX LED input?

The PS9505-V-AX LED input has a recommended forward current of 7–16 mA per the datasheet's Recommended Operating Conditions. Absolute maximum rating is 25 mA continuous, but sustained operation above 16 mA reduces lifetime and increases thermal stress. For reliable 10-year operation in industrial environments, design for 10 mA typical with appropriate series resistance based on VF = 1.56 V (typ) at TA = 25°C. The PS9505-V-AX must not exceed 1.0 A peak transient current even for sub-microsecond pulses.

Does PS9505-V-AX support direct connection to 3.3 V microcontroller GPIOs?

Yes, PS9505-V-AX supports direct interface with 3.3 V GPIOs when used with a properly sized series current-limiting resistor. With VF ≈ 1.56 V (typ) and IF = 10 mA target, a 160 Ω resistor yields ~10.3 mA drive. Ensure GPIO can sink ≥10 mA and that rise/fall time of IF remains ≤0.5 μs. Do not connect PS9505-V-AX anode directly to 3.3 V without current limiting - uncontrolled current risks LED degradation and invalidates UL/CSA safety certifications.

How does the UVLO function protect the power stage when using PS9505-V-AX?

The PS9505-V-AX UVLO circuit disables the output stage when VCC–VEE falls below 11.0 V (VUVLO−) and re-enables only after rising above 12.3 V (VUVLO+), providing 1.3 V hysteresis. This prevents partial turn-on of IGBTs or MOSFETs during brownout conditions, eliminating shoot-through risk and gate oxide stress. The PS9505-V-AX UVLO response time is 0.8 μs (turn-on) and 0.6 μs (turn-off), ensuring fast fault containment without compromising normal PWM timing integrity.

Can PS9505-V-AX drive SiC MOSFETs effectively?

PS9505-V-AX can drive discrete SiC MOSFETs rated ≤650 V with gate charge Qg ≤80 nC, provided gate loop inductance is minimized and negative turn-off bias is applied externally. Its 2.5 A peak output and 0.25 μs propagation delay meet basic SiC switching needs, but lack active Miller clamp or programmable slew rate control found in dedicated SiC drivers. For 1200 V SiC modules or high-frequency (>100 kHz) operation, PS9505-V-AX should be paired with external gate resistors and negative bias generation - the PS9505-V-AX itself remains valid for isolation and core drive functionality.

What safety certifications apply specifically to PS9505-V-AX (not just the PS9505 family)?

PS9505-V-AX carries the "V" suffix denoting VDE0884-2 (DIN EN60747-5-2) approval, confirmed by license number 40024069. This certification applies specifically to the PS9505-V-AX variant and covers partial discharge testing at 1808 Vpeak (procedure a) and 2119 Vpeak (procedure b), CTI ≥175, and material group IIIa. UL E72422 and CSA CA101391 approvals also apply to PS9505-V-AX, as verified in the ordering information table where PS9505-V-AX is explicitly listed under "Safety Standard Approval".