I heard that there is a shortcut to designing a cool 1.5KW/3KW DC-DC converter for electric vehicles (seriously)

Want to design for electric vehicles Very cool To develop a 1.5KW/3KW DC-DC converter, a shortcut must be found. The solution submitted by this third-party solution provider in the Infineon Power Management and RF Online Technology Community truly grasps the essence of things.

Let’s take a look at this 1.5KW/3KW DC-DC converter solution first~

Figure 1: Solution diagram is provided directly

This solution is a 1.5KW DC-DC application. Two boards can be connected in parallel to output 3KW. The rated output is 14V and the rated output current is 107A. The main circuit is composed of HB LLC and the output adopts synchronous rectification. Complete protection, superior performance and small output ripple.

( To learn more about this solution, copy the link below to the web version:

https://www.infineon-power-rf.org/ecosystem/ecosystem_view?id=99 ）

The design shortcut of this 1.5KW/3KW DC-DC converter is revealed: the LLC MOSFET of this project is Infineon's 650V CoolMOS™ CFDA power MOSFET series product - IPW65R048CFDA. A single leaf can tell the whole story, and a glimpse of a small part can tell the whole story. Let us take a look at the 650V CoolMOS™ CFDA power MOSFET product through IPW65R048CFDA.

Infineon Technologies has expanded its automotive power semiconductor portfolio with the industry’s first superjunction MOSFET solution with an integrated fast body diode , the 650V CoolMOS™ CFDA , which meets the highest automotive quality certification standard AEC-Q101.

The powerful combination of performance will surely bring more benefits:

• Higher safety margin : CoolMOS™ CFDA has a breakdown voltage of 650V , which means a higher safety margin compared to a breakdown voltage of 600V;
  

• Lower EMI (Electromagnetic Interference) , easy to design;

• Higher light load efficiency;

• Lower switching losses;

• Higher switching frequency and higher duty cycle;

• High quality and excellent reliability;

All this makes Infineon’s 650V CoolMOS™ CFDA power MOSFETs particularly suitable for resonant topologies such as battery charging, DC/DC converters and HID (High Intensity Discharge) lighting in hybrid and electric vehicles.

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