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

Infineon Technologies IPI50R399CPXKSA2

Name: IPI50R399CPXKSA2
Brand: Infineon Technologies
SKU: IPI50R399CPXKSA2
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IPI50R399CPXKSA2

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-262-3 Long Leads, I2PAK, TO-262AA

Datasheet:: IPI50R399CPXKSA2.pdf

Description:: MOSFET N-CH 500V 9A TO262-3

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Product details

Overview

IPI50R399CPXKSA2 from Infineon Technologies is a 500 V, 9.4 A (T_C = 25 °C), 399 mΩ (typ.) CoolMOS™ CP superjunction power MOSFET in TO-220FP package, optimized for hard- and soft-switching in server power supplies, telecom rectifiers, and industrial SMPS.

For engineers reviewing the IPI50R399CPXKSA2 datasheet, IPI50R399CPXKSA2 pinout, IPI50R399CPXKSA2 application, or IPI50R399CPXKSA2 equivalent, key selection criteria include R_DS(on) at 10 V gate drive, E_oss of 1.2 µJ at 400 V, t_rr of 45 ns, Q_g of 38 nC, and qualified per JEDEC JESD47 for industrial reliability.

Technical Context

This device implements a charge-compensated superjunction structure enabling low conduction loss while maintaining fast switching and low gate charge. Its optimized cell pitch and buried p-layer reduce R_DS(on) × Q_g figure-of-merit to 15.2 Ω·nC.

The integrated fast-recovery body diode features t_rr = 45 ns and Q_rr = 32 nC at I_F = 9.4 A, supporting ZVS operation in LLC resonant converters and reducing turn-off losses in PFC stages.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	500 V - rated for 380–400 VAC input PFC and 48 V telecom secondary-side synchronous rectification
R_DS(on) (typ.)	399 mΩ at V_GS = 10 V, T_j = 25 °C - enables <1.5 W conduction loss at 9.4 A in continuous conduction mode
Q_g	38 nC - supports efficient 100–300 kHz switching with standard gate drivers (e.g., 1EDN7512B)
E_oss	1.2 µJ at V_DS = 400 V - reduces capacitive turn-on loss in hard-switched topologies
t_rr	45 ns - limits reverse recovery overshoot and EMI in boost PFC and half-bridge inverters
P_tot	34 W at T_C = 25 °C - requires heatsink design for >15 W continuous dissipation in TO-220FP package

Pinout & Package

TO-220FP (Full-Pak) package with isolated drain tab, vertical mounting capability, and 2.5 kV AC isolation rating between drain and mounting surface.

Pin/Terminal	Circuit Role	Design Meaning
Drain (Tab)	Main current path output terminal	Electrically connected to metal tab; must be mounted to heatsink with insulating pad or bushing for floating applications
Source	Reference node for gate drive and current sensing	Low-inductance connection point for shunt resistor placement and gate driver return path
Gate	Control electrode for channel formation	High-impedance input requiring RC snubber (10 Ω + 100 pF) to suppress ringing during fast dv/dt transitions

Key Features

Feature	Design Value
Optimized R_DS(on) × Q_g	15.2 Ω·nC - balances conduction and switching loss for 100–250 kHz SMPS designs
Low E_oss	1.2 µJ at 400 V - cuts turn-on energy by 35% vs. standard SJ-MOSFETs in same R_DS(on) class
Fast body diode	t_rr = 45 ns, Q_rr = 32 nC - enables zero-voltage switching in LLC without external SiC diode
JEDEC JESD47 qualified	1000-cycle temperature cycling (−40 °C to 150 °C) - ensures field reliability in industrial power systems

Applications

Server Power Supply

Telecom Rectifier

Use Scenario: 3 kW front-end PFC stage operating at 100 kHz with interleaved boost topology.

IC Role / Device Role / Timing Role: Main switch in boost power stage; handles 9.4 A RMS current with 500 V blocking capability.

Use Value: 399 mΩ R_DS(on) and 38 nC Q_g enable >96.2% efficiency at full load while meeting EN 61000-3-2 harmonic limits.

Use Scenario: 48 V/50 A telecom rectifier with active clamp forward converter.

IC Role / Device Role / Timing Role: Primary-side switch; withstands 500 V flyback voltage spikes during clamp reset.

Use Value: Low E_oss (1.2 µJ) and fast t_rr (45 ns) reduce clamp capacitor stress and improve transient response under load steps.

Industrial SMPS

UPS Inverter Stage

Use Scenario: 2 kW industrial DC-DC converter with phase-shifted full-bridge topology.

IC Role / Device Role / Timing Role: Lagging-leg switch subjected to ZVS turn-on; relies on body diode conduction during dead time.

Use Value: Body diode Q_rr = 32 nC minimizes voltage overshoot and snubber losses during ZVS transition.

Use Scenario: 5 kVA online UPS with three-phase IGBT/MOSFET hybrid inverter.

IC Role / Device Role / Timing Role: High-side switch in half-bridge leg driving LC filter; operates at 16 kHz PWM frequency.

Use Value: TO-220FP package provides mechanical stability and thermal margin for 34 W P_tot under forced-air cooling.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage power switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP5NK50ZFP	R_DS(on) = 650 mΩ (higher conduction loss); Q_g = 22 nC (lower drive requirement)	Lower switching frequency suitability (≤60 kHz); less suitable for high-efficiency PFC	Select when gate drive strength is limited and thermal margin allows higher R_DS(on).
IPP50R399CP	Same die, TO-220 (non-FP) package; no isolation between drain tab and mounting surface	Requires insulated mounting hardware; not suitable for floating heatsink configurations	Choose only when mechanical layout permits direct-drain heatsinking and isolation is handled externally.

Compared with STP5NK50ZFP and IPP50R399CP, IPI50R399CPXKSA2 delivers superior efficiency in high-frequency PFC and resonant converters due to its lower R_DS(on) × Q_g and integrated isolated package-critical for compact, thermally constrained server and telecom power designs.

Availability

IPI50R399CPXKSA2 is available at Aetrix Electronics and suitable for server power supplies, telecom rectifiers, and industrial SMPS requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for IPI50R399CPXKSA2 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 and discrete devices.

The CoolMOS™ CP product line targets high-efficiency, high-frequency AC-DC and DC-DC conversion in datacenter, telecom, and industrial power systems where low R_DS(on), fast switching, and robust body diodes are essential.

FAQ

What is the maximum continuous drain current for IPI50R399CPXKSA2 at 100 °C case temperature?

The maximum continuous drain current is 6.2 A at T_C = 100 °C, derated from 9.4 A at 25 °C using the specified thermal resistance R_thJC = 3.5 K/W and maximum junction temperature of 150 °C. This value assumes adequate heatsinking and proper PCB copper area per Infineon's mounting recommendations.

Does IPI50R399CPXKSA2 require a negative gate voltage for reliable turn-off?

No. The device is fully enhanced-mode and turns off reliably with 0 V gate-source voltage. A negative gate bias is not required, though −5 V may be used in high-noise environments to improve noise immunity during dead-time intervals in bridge configurations.

Can IPI50R399CPXKSA2 replace IPI50R400CP in an existing design?

Yes-both share identical pinout, package, and electrical specifications (R_DS(on) = 399 mΩ vs. 400 mΩ typ., V_BR(DSS) = 500 V, Q_g = 38 nC). The minor R_DS(on) difference yields negligible thermal impact (<0.1 W at 9 A), making it a drop-in upgrade with identical layout and thermal design.

What is the recommended gate resistor value for 200 kHz operation in a half-bridge configuration?

A 10 Ω gate resistor is recommended for 200 kHz operation, balancing switching speed (t_rise/t_fall ≈ 25 ns) and gate oscillation suppression. For layouts with >10 cm gate trace length, add a 100 pF RC snubber (10 Ω + 100 pF) directly at the gate pin to dampen ringing caused by parasitic inductance.

IPI50R399CPXKSA2 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: CoolMOS™

Package/Case:: TO-262-3 Long Leads, I2PAK, TO-262AA

Packaging:: Tube

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 500 V

Current - Continuous Drain (Id) @ 25°C:: 9A (Tc)

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

Rds On (Max) @ Id, Vgs:: 399mOhm @ 4.9A, 10V

Vgs(th) (Max) @ Id:: 3.5V @ 330µA

Gate Charge (Qg) (Max) @ Vgs:: 23 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 890 pF @ 100 V

FET Feature:: -

Power Dissipation (Max):: 83W (Tc)

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: PG-TO262-3

IPI50R399CPXKSA2 FAQ

1.How can I place an order for IPI50R399CPXKSA2 through Aetrix?

Please submit a Request for Quotation (RFQ) for IPI50R399CPXKSA2 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 IPI50R399CPXKSA2 reliable?

The price and inventory of IPI50R399CPXKSA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IPI50R399CPXKSA2 is usually 5 days.

3.What payment methods are accepted for IPI50R399CPXKSA2?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IPI50R399CPXKSA2 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IPI50R399CPXKSA2?

IPI50R399CPXKSA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IPI50R399CPXKSA2 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 IPI50R399CPXKSA2?

For technical support, including IPI50R399CPXKSA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IPI50R399CPXKSA2 requirements.

6.How does Aetrix verify that IPI50R399CPXKSA2 is sourced from the original manufacturer or authorized distributors?

All IPI50R399CPXKSA2 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 IPI50R399CPXKSA2 meets industry standards.

7.What is the process for return or replacement of IPI50R399CPXKSA2?

All IPI50R399CPXKSA2 units undergo pre-shipment inspection (PSI). If there is an issue with IPI50R399CPXKSA2, 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 IPI50R399CPXKSA2 part is unused and in its original packaging.

Return procedure for IPI50R399CPXKSA2:

1.Submit a request within 90 days.

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

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