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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Gate Drivers

Infineon Technologies IR3103

Name: IR3103
Brand: Infineon Technologies
SKU: IR3103
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IR3103

Manufacturer:: Infineon Technologies

Category:: Gate Drivers

Package:: 11-SIP, 9 Leads

Datasheet:: IR3103.pdf

Description:: IC GATE DRVR HALF-BRIDGE 11SIP

Quantity:: RFQ Add To RFQ list

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Inventory:1,219

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Product details

Overview

IR3103 from Infineon Technologies is a monolithic half-bridge gate driver IC with integrated 500V FredFETs, designed for heat-sink-less sub-250W motor drives. It delivers 1.6A continuous output current (TC = 100°C), features integrated bootstrap diode, 1500 VRMS isolation, and matched propagation delays between high-side and low-side switches. Used in refrigerator compressor and fan motor inverters.

For engineers reviewing the IR3103 datasheet, IR3103 pinout, IR3103 application, or IR3103 equivalent, this page provides verified pin functions, real-world thermal limits (RthJA = 85 °C/W), MOSFET RDS(on) = 0.8 Ω (typ), driver UVLO thresholds (VCCUV+ = 8.9 V), and shoot-through protection logic.

Technical Context

The IR3103 integrates a high-voltage IC (HVIC) driver with latch-immune CMOS logic and two co-packaged 500V FredFETs - one high-side and one low-side - sharing a common source (COM) and output node (VO). Its bootstrap-based high-side drive supports floating operation up to VB = VO + 20 V, with undervoltage lockout on both VCC (8.9 V typ) and VB (8.9 V typ).

Proprietary HEXFET® FredFET® technology enables ultra-fast body diode recovery (tRR = 105–230 ns) and low switching losses (EON = 100–205 µJ, EOFF = 5–17 µJ). The device operates with trapezoidal 120° commutation at up to 20 kHz without heatsink (IO ≤ 2.5 A @ 55°C ambient).

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS Rating	500 V - supports 300 V bus applications with 100 V margin for voltage spikes
I_O Continuous	1.6 A @ T_C = 100°C - defines max phase current in compact, heatsink-less designs
R_DS(on)	0.8 Ω (typ) @ 25°C - determines conduction loss and thermal rise in motor leg
t_RR	105–230 ns - enables fast freewheeling with minimal reverse recovery loss
V_ISO	1500 V_RMS - ensures reinforced isolation for appliance safety compliance (IEC 60730)
Propagation Match	≤30 ns skew - prevents timing-induced shoot-through in PWM-controlled inverters
V_CC UVLO	8.9 V (typ) - guarantees reliable gate drive only when logic supply is stable

Pinout & Package

IR3103 uses a compact, isolated single-in-line (SIL) package with creepage/clearance optimized for appliance motor control. The package provides internal isolation between high-side (VB/VO/VDD) and low-side/logic (VCC/VSS/HIN/LIN/COM) domains.

Pin/Terminal	Circuit Role	Design Meaning
1	VCC	Logic and gate driver supply input - powers internal level shifters and logic core
2	HIN	High-side gate control input - TTL/CMOS-compatible, referenced to VSS
3	LIN	Low-side gate control input - independent of HIN, enables dead-time insertion
5	VSS	Logic ground reference - separate from power ground (COM) for noise immunity
6	COM	Low-side MOSFET source return - connects to motor phase node and shunt resistor
8	VB	High-side floating supply - charged via external bootstrap capacitor from VO
9	VO	Half-bridge output - connects directly to motor winding; shared drain-source path
11	VDD	High-voltage rail input - referenced to COM; supplies high-side driver stage

Key Features

Feature	Design Value
Integrated Bootstrap Diode	Eliminates external diode, reduces BOM count and layout area in compact inverter designs
Latch-Immune HVIC Driver	Prevents false triggering during high dv/dt transients common in motor phase switching
FredFET Body Diode Recovery	t_RR ≤ 230 ns enables efficient 120° trapezoidal commutation up to 20 kHz
ESD Protection	Full-pin ESD rating per JESD22-A114 - protects against handling damage during assembly
Matched HS/LS Propagation	≤30 ns skew ensures precise dead-time control without external timing compensation

Applications

Refrigerator Compressor Drive

Fan Motor Inverter

Use Scenario: Variable-speed hermetic compressor control in energy-efficient refrigerators operating without heatsink.

IC Role / Device Role / Timing Role: Half-bridge inverter stage delivering 300 V DC bus switching at 12–16 kHz with trapezoidal modulation.

Use Value: Integrated 500 V FredFETs and 1500 V_RMS isolation meet IEC 60335-1 creepage requirements while enabling PCB space reduction.

Use Scenario: Low-noise, low-EMI blower motor drive in HVAC systems with constrained thermal envelope.

IC Role / Device Role / Timing Role: Single-package half-bridge providing shoot-through protected PWM outputs with <30 ns propagation skew.

Use Value: Integrated bootstrap diode and latch-immune driver reduce component count and improve reliability over discrete solutions.

Small Appliance Motor Control

Portable Power Tool Driver

Use Scenario: Compact, cost-sensitive motor drive for vacuum cleaners and food processors requiring <250 W output.

IC Role / Device Role / Timing Role: High-efficiency inverter using FredFET body diode for freewheeling during PWM off-time.

Use Value: RDS(on) = 0.8 Ω (typ) and EREC = 10–35 µJ minimize conduction and recovery losses at 15 kHz switching.

Use Scenario: Battery-powered cordless drill with 18–36 V nominal input and 300 V bus generation via boost stage.

IC Role / Device Role / Timing Role: Isolated half-bridge stage driving BLDC motor with 200 ns minimum dead-time guarantee.

Use Value: VDD = 500 V rating and RthJA = 85 °C/W allow operation at TJ = 150°C without heatsink in intermittent duty cycles.

Equivalent & Alternatives

The following parts are listed as comparable options for similar half-bridge inverter applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IR3101	Same pinout, identical 500 V/1.6 A rating, but lower R_DS(on) (0.7 Ω typ) and tighter t_RR (90 ns min)	Optimized for higher efficiency in continuous-duty compressors	Select IR3101 when >5% efficiency gain or extended thermal margin is required
FAN7382MX	Driver-only (no FETs); requires external 500 V MOSFETs; no integrated bootstrap diode	Suitable for designs needing flexible FET selection or higher current (>3 A)	Choose FAN7382MX when discrete FET optimization or dual-phase scalability is prioritized

Compared with IR3101, IR3103 trades marginal R_DS(on) increase for broader production availability and cost optimization; versus FAN7382MX, it eliminates six external components but fixes FET voltage/current capability.

Availability

IR3103 is available at Aetrix Electronics and suitable for refrigerator compressor drives, fan motor inverters, small appliance motor control, and portable power tool drivers requiring stable component supply and long-term industrial lifecycle support.

Supply support for IR3103 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 German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with leadership in high-voltage gate drivers and silicon carbide solutions.

The IR310x series targets cost-sensitive, space-constrained motor drives in white goods - combining HVIC driver logic, latch immunity, and FredFET power stages in a single isolated package.

FAQ

What is the maximum recommended switching frequency for IR3103 without heatsink?

IR3103 supports up to 20 kHz switching frequency in heatsink-less operation at T_A = 55°C and T_J = 150°C, as validated in Figure 3 of the datasheet. At 16 kHz, maximum phase current is 2.5 A under trapezoidal 120° commutation with 300 V bus and 0.8 duty cycle.

Does IR3103 require an external bootstrap diode?

No. IR3103 integrates a bootstrap diode internally, connecting VB to VO. This eliminates the need for an external diode and simplifies PCB layout - confirmed in the "Features" section and Pin 8 (VB) description of the datasheet.

How is shoot-through prevented in IR3103?

IR3103 prevents shoot-through via built-in logic that disables both HIN and LIN inputs when they are simultaneously high, as shown in Figure 2. Additionally, propagation delay matching (≤30 ns) and input hysteresis ensure robust timing margins during PWM transitions.

What is the thermal resistance from junction to ambient (RthJA) for IR3103?

The datasheet specifies RthJA = 85 °C/W under board-mounted, still-air conditions (Note 1). This value assumes standard JEDEC 2S2P test board layout and is used to calculate junction temperature rise: T_J = T_A + (P_D × 85).

IR3103 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: iMOTION™

Package/Case:: 11-SIP, 9 Leads

Packaging:: Tube

Product Status:: Obsolete

Programmable:: Not Verified

Driven Configuration:: Half-Bridge

Channel Type:: Independent

Number of Drivers:: 2

Gate Type:: N-Channel MOSFET

Voltage - Supply:: 10V ~ 20V

Logic Voltage - VIL, VIH:: 0.8V, 2.9V

Current - Peak Output (Source, Sink):: -

Input Type:: Non-Inverting

High Side Voltage - Max (Bootstrap):: 500 V

Rise / Fall Time (Typ):: -

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 11-SIP

IR3103 FAQ

1.How can I place an order for IR3103 through Aetrix?

Please submit a Request for Quotation (RFQ) for IR3103 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for IR3103 reliable?

The price and inventory of IR3103 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IR3103 is usually 5 days.

3.What payment methods are accepted for IR3103?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IR3103 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IR3103?

IR3103 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IR3103 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for IR3103?

For technical support, including IR3103 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IR3103 requirements.

6.How does Aetrix verify that IR3103 is sourced from the original manufacturer or authorized distributors?

All IR3103 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that IR3103 meets industry standards.

7.What is the process for return or replacement of IR3103?

All IR3103 units undergo pre-shipment inspection (PSI). If there is an issue with IR3103, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The IR3103 part is unused and in its original packaging.

Return procedure for IR3103:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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