Infineon Technologies IPA50R950CEXKSA2

Overview

IPA50R950CEXKSA2 from Infineon Technologies is a 500 V, 0.95 Ω R_DS(on) superjunction MOSFET in PG-TO220 FP package with drain-connected pin 2, gate on pin 1, and source on pin 3. It delivers 6.6 A continuous drain current at T_C = 25°C, 10.5 nC total gate charge, and 1.28 µJ output switching energy at 400 V - optimized for high-efficiency PFC and hard-switching SMPS in LCD TV and indoor lighting power supplies.

For engineers reviewing the IPA50R950CEXKSA2 datasheet, IPA50R950CEXKSA2 pinout, IPA50R950CEXKSA2 application, or IPA50R950CEXKSA2 equivalent, key selection criteria include its CoolMOS™ CE platform's low FOM (R_DS(on) × Q_g), high commutation ruggedness (500 A/µs di/dt), and TO-220 FullPAK insulation rating of 2500 V_RMS.

Technical Context

This 500 V CoolMOS™ CE device implements superjunction architecture to achieve ultra-low conduction and switching losses simultaneously. Its 0.95 Ω max R_DS(on) at 150°C and 10.5 nC Q_g enable high-frequency operation up to 100 kHz in continuous conduction mode PFC stages while maintaining thermal stability under 150°C junction temperature.

The integrated body diode exhibits 140 ns reverse recovery time and 0.7 µC Q_rr at 400 V, supporting resonant topologies without external snubbers. Its 50 V/ns dv/dt ruggedness and 68 mJ single-pulse avalanche energy ensure robustness in hard-switched converters with fast voltage transients.

Key Specifications

Pinout & Package

IPA50R950CEXKSA2 uses the PG-TO220 FP (FullPAK) package - a through-hole variant with insulated tab, enabling direct heatsink mounting without isolation hardware. The package features a molded plastic body with copper leads and Pb-free plating.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage superjunction MOSFET applications.

Compared with STP5NK50ZFP and IPP60R099C6, IPA50R950CEXKSA2 delivers optimal balance of low R_DS(on), moderate Q_g, and proven ruggedness - making it the preferred choice for 75–150 W consumer power supplies where efficiency, reliability, and layout simplicity are jointly critical.

Availability

IPA50R950CEXKSA2 is available at Aetrix Electronics and suitable for LED driver power stages, PC silver box PFC circuits, and LCD TV backlight inverters requiring stable component supply and long-term industrial availability.

Supply support for IPA50R950CEXKSA2 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 leader specializing in power management, automotive ICs, and security solutions, with global manufacturing and R&D centers.

This part belongs to the CoolMOS™ CE product line - engineered specifically for cost-sensitive consumer and lighting power supplies that demand high efficiency without sacrificing ease of design-in or thermal robustness.

FAQ

What is the maximum recommended gate resistor value for IPA50R950CEXKSA2 in a 100 kHz PFC application?

Based on the datasheet's 5.3 Ω test condition and 10.5 nC Q_g, a 10 Ω gate resistor is recommended for 100 kHz operation to limit peak gate current to <1.5 A while maintaining <25 ns rise/fall times. Higher values increase switching loss; lower values risk gate oscillation due to PCB inductance.

Can IPA50R950CEXKSA2 be paralleled without gate ferrite beads?

Yes - its 500 A/µs di/dt rating and low gate-drain charge (5.9 nC) allow stable paralleling with matched devices using separate gate resistors. Ferrite beads are optional but not required if layout symmetry and gate loop inductance are controlled below 5 nH per branch.

Does IPA50R950CEXKSA2 require a negative gate turn-off voltage?

No - the gate threshold voltage (2.5–3.5 V) and 30 V absolute maximum V_GS rating permit safe operation with 0 V to +15 V gate drive. Negative turn-off is unnecessary and may increase gate driver complexity without improving performance.

Is the TO-220 FullPAK package electrically insulated from the drain terminal?

Yes - the PG-TO220 FP package provides 2500 V_RMS isolation between the drain (pin 2) and the metal tab/heatsink interface. This eliminates the need for insulating pads or sil-pads in thermally demanding applications.