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Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

Infineon Technologies IRFS7734TRL7PP

Name: IRFS7734TRL7PP
Brand: Infineon Technologies
SKU: IRFS7734TRL7PP
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRFS7734TRL7PP

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-263-7, D2PAK (6 Leads + Tab)

Datasheet:: IRFS7734TRL7PP.pdf

Description:: MOSFET N-CH 75V 197A D2PAK

Quantity:: RFQ Add To RFQ list

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Product details

Overview

IRFS7734TRL7PP from Infineon Technologies (formerly International Rectifier) is a 75V, 197A N-channel enhancement-mode Power MOSFET in D2PAK-7L package, featuring 2.6 mΩ typical R_DS(on) at V_GS = 10 V, 180 nC total gate charge, and optimized for high-current synchronous rectification and half-bridge motor drive stages in battery-powered BLDC inverters.

For engineers reviewing the IRFS7734TRL7PP datasheet, IRFS7734TRL7PP pinout, IRFS7734TRL7PP application, or IRFS7734TRL7PP equivalent, key selection criteria include avalanche energy rating (670 mJ), body diode dV/dt capability (4.8 V/ns), thermal resistance (0.51 °C/W J–C), and SOA compliance in resonant-mode power supplies.

Technical Context

This device employs a trench-gate HEXFET® structure with enhanced body diode ruggedness and fully characterized avalanche SOA. Its low R_DS(on) and high pulsed current rating (600 A) support high-efficiency switching in hard-switched and ZVS topologies.

The gate threshold voltage (2.1–3.7 V) and transconductance (182 S) enable robust turn-on control under wide temperature range (–55 to +175 °C), while C_iss = 10,130 pF and Q_gd = 54 nC support predictable switching behavior in high-frequency bridge configurations.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	75 V - Maximum blocking voltage for 48 V bus systems with margin against transient overvoltage
R_DS(on) max	3.05 mΩ @ V_GS = 10 V, I_D = 100 A - Enables <1.5 W conduction loss at 100 A continuous drain current
I_D continuous	197 A @ T_C = 25 °C - Supports high-current motor phase legs without parallel devices
E_AS	670 mJ - Single-pulse avalanche energy rating validated at L = 1 mH, I_AS = 37 A, T_J start = 25 °C
Q_g	270 nC max - Defines gate driver power requirement and switching transition time in 10–100 kHz bridges
R_θJC	0.51 °C/W - Enables direct heatsink mounting with predictable junction temperature rise under full load
V_SD	1.2 V @ I_S = 100 A - Forward voltage of integrated body diode for synchronous rectifier operation

Pinout & Package

IRFS7734TRL7PP is housed in a surface-mount D2PAK-7L (TO-263-7) package with exposed drain pad for thermal performance and seven terminals: three drain pins (D1–D3), one source pin (S), two gate pins (G1, G2), and one Kelvin source (KS) for accurate gate drive referencing.

Pin/Terminal	Circuit Role	Design Meaning
D1–D3	Main Drain connections	Parallel low-inductance paths for high-current drain return; tied internally to die drain metallization
S	Main Source connection	Primary current return path for load current; referenced to PCB ground plane
G1, G2	Gate inputs	Redundant gate terminals reduce gate loop inductance; both must be driven identically
KS	Kelvin Source	Provides gate drive reference isolated from main source voltage drop; enables stable V_GS control

Key Features

Feature	Design Value
Enhanced body diode dV/dt capability	4.8 V/ns at T_J = 175 °C - Prevents spurious turn-on during fast commutation in half-bridge freewheeling
Fully characterized avalanche SOA	670 mJ single-pulse E_AS with validated thermal limits - Allows unclamped inductive switching without derating
Low C_oss eff. (ER)	715 pF - Reduces turn-off energy loss in resonant LLC and ZVS converters
Lead-free, RoHS-compliant construction	Meets IPC-J-STD-020 moisture sensitivity level 3 - Supports standard reflow profiles without preconditioning
Improved dynamic dV/dt ruggedness	Validated >50 V/ns immunity - Ensures reliable operation in high dv/dt gate-drive environments

Applications

Brushed Motor Drive

BLDC Inverter Phase Leg

Use Scenario: High-power cordless power tools with 36–48 V battery packs and peak currents up to 200 A.

IC Role / Device Role / Timing Role: Low-side switch in H-bridge configuration, handling bidirectional current with body-diode freewheeling.

Use Value: 2.6 mΩ R_DS(on) minimizes I²R heating during stall conditions; 600 A pulsed rating withstands startup surges.

Use Scenario: 3-phase inverter for e-bike or scooter traction drives operating at 10–20 kHz PWM frequency.

IC Role / Device Role / Timing Role: Upper- and lower-leg switch in each phase leg, requiring matched switching characteristics and low Q_gd.

Use Value: Dual gate pins and Kelvin source ensure consistent V_GS control across paralleled dies; 54 nC Q_gd supports clean Miller plateau transitions.

Synchronous Rectifier

OR-ing Power Switch

Use Scenario: Secondary-side rectification in 48 V input telecom DC/DC modules delivering >1 kW output.

IC Role / Device Role / Timing Role: Active replacement for Schottky diode in forward or LLC converter secondary, driven synchronously.

Use Value: 1.2 V V_SD and low R_DS(on) cut conduction losses by >40% vs. 40 V Schottky; 182 S g_fs enables fast turn-on at light load.

Use Scenario: Redundant 48 V power supply backplane in industrial PLC chassis with hot-swap capability.

IC Role / Device Role / Timing Role: OR-ing FET controlling power path from multiple supplies to common bus, with reverse-current blocking.

Use Value: Body diode reverse recovery time (46 ns) and I_RRM = 2.7 A prevent shoot-through during supply switchover; 75 V rating covers 10% bus overvoltage.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-current N-channel power MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STL220N7F3AG	75 V, 220 A, R_DS(on) = 2.3 mΩ, DFN8 5×6 mm package, no Kelvin source	Lower R_DS(on) but higher C_iss (12,500 pF); requires gate driver with >3 A peak current	Preferred for space-constrained designs where thermal interface is optimized; not suitable for Kelvin-referenced gate drive
IXFH70N75X3	75 V, 70 A, R_DS(on) = 11.5 mΩ, TO-247 package, single gate	Lower current rating and higher on-resistance; superior avalanche rating (1,200 mJ)	Selected when robustness in unclamped inductive switching outweighs conduction loss; limited to ≤70 A continuous loads

Compared with STL220N7F3AG and IXFH70N75X3, IRFS7734TRL7PP uniquely balances ultra-low R_DS(on), Kelvin-source precision, and 7-pin layout for high-current bridge stability-making it optimal for production-grade BLDC inverters where thermal management and switching fidelity are co-critical.

Availability

IRFS7734TRL7PP is available at Aetrix Electronics and suitable for brushed motor drives, BLDC inverter phase legs, and synchronous rectifier circuits requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for industrial OEM programs.

Supply support for IRFS7734TRL7PP 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, sensor, and automotive ICs, with deep expertise in silicon and wide-bandgap power devices.

This part belongs to the StrongIRFET™ family-designed specifically for high-efficiency, high-reliability power conversion in motor drives, server PSUs, and industrial power supplies where ruggedness and thermal performance are non-negotiable.

FAQ

What is the maximum allowable case temperature for continuous 197 A operation?

The datasheet specifies 197 A continuous drain current at T_C = 25 °C. At higher case temperatures, derating applies: linear derating begins at 2.0 W/°C beyond 25 °C, and maximum continuous current drops to 139 A at T_C = 100 °C. Operation above 100 °C case temperature requires thermal modeling to ensure T_J ≤ 175 °C.

Does IRFS7734TRL7PP support gate driving from a 5 V logic-level controller?

No. The gate threshold voltage ranges from 2.1 V to 3.7 V, but full enhancement requires V_GS ≥ 10 V to achieve rated R_DS(on) of 3.05 mΩ. Driving from 5 V results in significantly higher on-resistance (>15 mΩ), excessive conduction loss, and potential thermal runaway. A dedicated gate driver supplying 10–15 V is mandatory.

How is the Kelvin source (KS) terminal used in PCB layout?

The KS pin must be routed separately from the main source (S) trace and connected directly to the gate driver's reference ground, ideally via a short, low-inductance path. This isolates gate drive feedback from high di/dt source voltage drop, ensuring accurate V_GS control and preventing false turn-off during fast switching transitions.

Can IRFS7734TRL7PP replace IRFS7730 in an existing design?

Yes, with verification. Both share identical D2PAK-7L package, pinout, and 75 V rating, but IRFS7734TRL7PP offers lower R_DS(on) (3.05 mΩ vs. 3.8 mΩ) and higher I_D (197 A vs. 180 A). Layout compatibility is maintained, though gate drive strength and thermal margin should be rechecked due to increased current density.

IRFS7734TRL7PP Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®, StrongIRFET™

Package/Case:: TO-263-7, D2PAK (6 Leads + Tab)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 75 V

Current - Continuous Drain (Id) @ 25°C:: 197A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 6V, 10V

Rds On (Max) @ Id, Vgs:: 3.05mOhm @ 100A, 10V

Vgs(th) (Max) @ Id:: 3.7V @ 150µA

Gate Charge (Qg) (Max) @ Vgs:: 270 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 10130 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 294W (Tc)

Operating Temperature:: -55°C ~ 175°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-TO263-7

IRFS7734TRL7PP FAQ

1.How can I place an order for IRFS7734TRL7PP through Aetrix?

Please submit a Request for Quotation (RFQ) for IRFS7734TRL7PP 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 IRFS7734TRL7PP reliable?

The price and inventory of IRFS7734TRL7PP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRFS7734TRL7PP is usually 5 days.

3.What payment methods are accepted for IRFS7734TRL7PP?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRFS7734TRL7PP transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRFS7734TRL7PP?

IRFS7734TRL7PP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRFS7734TRL7PP 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 IRFS7734TRL7PP?

For technical support, including IRFS7734TRL7PP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRFS7734TRL7PP requirements.

6.How does Aetrix verify that IRFS7734TRL7PP is sourced from the original manufacturer or authorized distributors?

All IRFS7734TRL7PP 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 IRFS7734TRL7PP meets industry standards.

7.What is the process for return or replacement of IRFS7734TRL7PP?

All IRFS7734TRL7PP units undergo pre-shipment inspection (PSI). If there is an issue with IRFS7734TRL7PP, 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 IRFS7734TRL7PP part is unused and in its original packaging.

Return procedure for IRFS7734TRL7PP:

1.Submit a request within 90 days.

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

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