TO-247 4pin package

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A new innovative package using Kelvin source concept



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Infineon Technologies introduces the TO-247 4pin package in conjunction with the latest CoolMOS™ technologies of 600V CoolMOS™ C7, 650V CoolMOS™ C7 and 600V CoolMOS™ P6. With new generations of power switches becoming faster and faster, the effect of the parasitic elements of package and board limit more and more the overall system performance. An effective measure to overcome this problem is to provide an additional connection to the source (Kelvin connection), that is used as a reference potential for the gate driving voltage, thereby eliminating the effect of voltage drops over the source inductance. The achievable efficiency improvement, resulting from faster switching transients, can in fact be significant.


Features  Benefits
  • 4 th pin (Kelvin source)
  • Increased creepage distance between high voltage pins
  • Gate signal optimization
  • Reduces parasitic source inductance effects on the gate circuit enabling faster switching and increased efficiency
  • Using benefits of Kelvin source efficiency to increase MOSFET R DS(on) and reduce BOM cost
  • Creepage distance meets 5000m altitude requirement
  • Easier to design by customer

Benefits in efficiency of 4pin versus 3pin variants


>Click to enlarge




>Click to enlarge


Performance gain of 0.6% full load efficiency can be achieved if the same die is used in a 4pin versus a 3pin package.


Lower full load losses with 4pin part allow for next ‘smaller’ MOSFET (60mΩ instead of 45mΩ), enabling a BOM cost reduction with better low load efficiency.


TO-247 4pin package offers higher efficiency by means of a dedicated source-sense pin

Graph-Coolmos-in-to-247-4pin-package-1   Graph-Coolmos-in-to-247-4pin-package-2
  • Parasitic source inductance counteracts drive voltage
  • Slow down of transient leads to lower efficiency
  • Separate pin “source-sense” (Kelvin source) delivering an undisturbed signal to the driver
  • Up to 3x lower switching losses lead to
    • Higher efficiency
    • Cost reduction potential in application


PFC application with TO-247 4pin

Isolated driver 1EDI60N12AF is highly recommended


>Click to enlarge



>Click to enlarge

  • Isolated driver 1EDI60N12AF like for high side switch setup enables the floating of the kelvin source
  • No displacement current in the control circuit due to the isolation of the driver
  • Flexible driver supply: isolated and none isolated can be used
  • Kelvin source pin oscillates due to induced voltage spike on source inductance referring to power ground
  • MOSFET can be seen like high side switch in half bridge
  • Primary to secondary driver isolation eliminates impact to gate signal


Evaluationboard available



2500W CCM power factor correction (PFC), 110/230 AC to 400 DC, >98% peak efficiency, 65/100kHz


>Learn more

>Download application note


Product portfolio CoolMOS™ in TO-247 4pin

Click on a product type to learn more, download datasheet and order.

Family 125mΩ 99mΩ 95mΩ 70mΩ
600V CoolMOS™ C7   IPZ60R099C7    
600V CoolMOS™ P6 IPZ60R125P6 IPZ60R099P6   IPZ60R070P6
650V CoolMOS™ C7     IPZ65R095C7  


Family 65mΩ 60mΩ 45mΩ 41mΩ
600V CoolMOS™ C7   IPZ60R060C7    
600V CoolMOS™ P6       IPZ60R041P6
650V CoolMOS™ C7 IPZ65R065C7   IPZ65R045C7  


Family 40mΩ 19mΩ 17mΩ
600V CoolMOS™ C7 IPZ60R040C7*   IPZ60R017C7
600V CoolMOS™ P6      
650V CoolMOS™ C7   IPZ65R019C7  

*Evaluation board available:  2.5KW CCM with 600V C7




600V CoolMOS™ C7

650V CoolMOS™ C7

600V CoolMOS™ P6

Product Brief

Title Size Date Version
409 KB 03 Jul 2015 01_00
382 KB 19 Jan 2017 01_00
934 KB 04 Oct 2016 01_00

Product Brochure

Title Size Date Version
1.2 MB 31 Oct 2016 01_00
2.7 MB 27 Apr 2017 02_00
1.5 MB 09 Jun 2016 06_16

Application Notes

Title Size Date Version
701 KB 30 Nov 2015 01_00
2 MB 01 Dec 2016 01_00
4.8 MB 09 Nov 2016 01_00
794 KB 03 May 2013 01_00
1.4 MB 16 Nov 2015 01_00
880 KB 14 Aug 2014 01_00
1 MB 01 Nov 2012 01_00
7 MB 25 Jun 2015 01_00
993 KB 01 Apr 2008 01_00


Title Size Date Version
1.3 MB 12 Apr 2017 01_00

Product Selection Guide

Title Size Date Version
310 KB 10 Oct 2016 01_00
22.2 MB 21 Feb 2017 00_00
521 KB 10 Oct 2016 01_00
3.5 MB 15 May 2017 01_00
211 KB 10 Oct 2016 01_00

Application Brochure

Title Size Date Version
199 KB 18 Sep 2017 02_00

Evaluation Boards

Board Family Description Status
EVAL_2K5W_CCM_4P_V2 Diode (Si, SiC), Gate Driver, MOSFET, Power Controller (PWM, PFC) 2500W CCM Power factor correction (PFC), 110/230 AC to 400 DC, >98% peak efficiency, 65/100 kHz, shows efficiency benefits due to usage of TO247-4
  • 1EDI60N12AF
  • ICE3PCS01G
  • ICE3RBR4765JZ
  • IDH16G65C5
  • IFX91041
  • IPZ60R040C7
coming soon
KIT_2K5W_CCM_TOLL MOSFET, Diode (Si, SiC), Gate Driver This TO-lead less (TOLL) adapter is special made in order to upgrade the EVAL_2.5KW_CCM_4PIN evaluation board for SMD devices in the PFC stage by just exchanging the heatsink with the already assembled devices on it. The C7 GOLD series (G7) for the first time brings together the benefits of the improved C7 GOLD 600V CoolMOS™ technology, 4 pin Kelvin Source capability and the improved thermal properties of the TOLL package to enable a possible SMD solution for high current applications.
  • CoolMOSTM -IPT60R028G7
  • CoolSICTM G5 - IDK12G65C5
active and preferred

eLearning 600V CoolMOS™ C7 series

In this eLearning you get an explanation of the 600V CoolMOS™ C7 product family and its technical background. After this trainign you will understand the impact from efficiency to temperature, know the losses contribution of the MOSFET in PFC, understand and know the different switching losses mechanism, understand Q oss and E oss and its impact to hard- and soft- switching, know the limitation of the parasitic source inductance and understand the 4pin functionality with its benefit in hard switching applications.

Length 13:07


Introducing the New 600 V CoolMOS™ C7 Series Efficiency Optimized Applications

Introducing the 600V CoolMOS™ C7 series - efficiency optimized applications

The 600 V CoolMOS™ C7 series from Infineon brings new levels of efficiency to hard switching topologies (PFC/TTF) and unlike its 650 V predecessor also in high performance resonant topologies (LLC). This video covers power density and supply security.

Length 4:02


Introducing the New CoolMOS™ C7 Series

Introducing the CoolMOS™ C7 series

Infineon’s new CoolMOS™ C7 series is a revolutionary step forward in technology, providing the worlds’s lowest RDS(on) per package and, thanks to its low switching losses, efficiency improvements over the full load range. C7 is optimized for hard switching topologies such as power factor correction (CCM PFC), two transistor forward (TTF) and solar boost in applications such as solar, server, telecom and UPS. The 650V breakdown voltage makes it suitable for both solar and switched mode power supplies (SMPS) PFC stages where extra safety margin is required. 

Length 5:57


Key Information (600V CoolMOS™ P6)

600V CoolMOS™ P6 - key information

600V CoolMOS™ P6 defines a new benchmark in the price/performance superjunction (SJ) market. The new devices offer improved performance, making solutions more efficient while remaining easy to use and controllable. CoolMOS™ P6 technology is universal applicable and therefore suitable hard and soft switching topologies such das PFC, LLC stages in applications like server, telecom, consumer ad PC power. Applicable and therefore suitable hard & soft switching topologies (e.g. PFC, LLC) in applications like server, telecom, consumer and PC power.

Length 4:05


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