Infineon Technologies IRAM109-015SD

Overview

IRAM109-015SD from Infineon Technologies (formerly International Rectifier) is a single-in-line (SIP-S) hybrid IC integrating two high-voltage half-bridge gate drivers, four 500V MOSFETs, internal bootstrap diodes, a 220 mΩ current-sense shunt, and an NTC thermistor - designed for single-phase AC motor control in 85–253 Vac appliances. It delivers 1A RMS phase current at 100°C case temperature, supports 360V DC bus, and enables compact fan/pump/compressor drives with integrated shoot-through prevention and under-voltage lockout.

For engineers reviewing the IRAM109-015SD datasheet, IRAM109-015SD pinout, IRAM109-015SD application, or IRAM109-015SD equivalent, key selection criteria include its 500V V_DSS, matched 2.4 µs/570 ns propagation delays, integrated 220 mΩ shunt with ±5% tolerance, thermal feedback via 100 kΩ NTC at 25°C, and SIP-S package compatibility with M3 mounting torque (0.6 Nm).

Technical Context

The IRAM109-015SD implements dual independent half-bridge power stages with high-side floating supplies generated via internal bootstrap diodes and external capacitors - eliminating need for isolated auxiliary supplies. Each channel features Schmitt-triggered logic inputs, cross-conduction prevention logic, and matched turn-on/turn-off propagation delays to ensure precise dead-time control.

It integrates protection functions directly into the hybrid structure: under-voltage lockout on both V_DD and V_BS rails (8.2–9.8 V thresholds), thermal monitoring via embedded NTC (R₂₅ = 100 kΩ, B = 4250 K), and shutdown input that disables both high- and low-side outputs simultaneously.

Key Specifications

Pinout & Package

The IRAM109-015SD uses a 19-pin Single In-line Package (SIP-S) with insulated metal baseplate, optimized for surface-mount assembly and heatsink mounting using M3 screws (0.6 Nm torque). Pin 1–8 and 11–19 are functional; pins 9, 10, 13, 14, 17, 18 are no-connect (NC).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar appliance motor drive applications.

Compared with IRAMX16UP60A and FAN8230M, the IRAM109-015SD uniquely combines 500V power switches, current sensing, thermal feedback, and bootstrap diodes in a space-constrained SIP-S package - making it optimal for cost-sensitive, volume consumer appliance motor drives below 250W.

Availability

IRAM109-015SD is available at Aetrix Electronics and suitable for refrigerator compressor control, HVAC fan speed regulation, small-appliance pump drives, and smart washing machine drum motor applications requiring stable component supply and long-term production continuity.

Supply support for IRAM109-015SD 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

Infineon Technologies is a global semiconductor leader specializing in power management, automotive, and industrial control solutions, with deep expertise in high-voltage integration and motor drive systems.

The IRAM series targets cost-optimized, space-constrained appliance motor control - combining power switches, drivers, protection, and sensing in single-package hybrids to replace multi-component discrete solutions.

FAQ

What is the maximum allowable DC bus voltage for continuous operation?

The IRAM109-015SD is rated for 400 V sustained positive DC bus input (V+) per Absolute Maximum Ratings. Continuous operation at 360 V DC bus is specified in Recommended Operating Conditions and validated with sinusoidal modulation at 20 kHz PWM carrier frequency, ensuring safe thermal and electrical margins within the 150°C junction limit.

How is current sensing implemented and what is its accuracy?

Current sensing uses an internal 220 mΩ shunt resistor (218–222 mΩ range, ±5% tolerance at 25°C) connected between the low-side FET sources and COM. The ISENSE pin provides a Kelvin-connected low-impedance output, enabling measurement accuracy limited primarily by external amplifier gain error and PCB layout - not by device variation.

Does the module require external bootstrap capacitors, and what value is recommended?

Yes - external ceramic bootstrap capacitors (typically 0.1–1.0 µF, X7R, 50 V rated) must be placed between VBx and VSx pins for each high-side driver. Capacitor value depends on PWM frequency and duty cycle; IR's AN-1044 and DN98-2a recommend ≥0.22 µF for 20 kHz operation to maintain >12 V V_BS under worst-case load.

Is the metal baseplate electrically isolated from internal circuitry?

No - the metal baseplate is internally connected to the negative DC bus (COM/V_S), as confirmed in Application Circuit Recommendation #4. Electrical isolation from heatsink must be provided using insulating thermal pads or mica washers to prevent short-circuiting the DC bus to chassis ground.