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Higher Efficiency for Your Power Supplies!
These 150 V MOSFETs are Recommended for Power Supplies with Synchronous Rectification

The new 150 V MOSFETs TPH1100CQ5 and TPH1400CQ5 from TOSHIBA offer considerable advantages for the efficiency of power supplies with synchronous rectification.

Faster switching times and lower losses, reduction of voltage peaks and high performance characterize the new low-voltage MOSFETs.

What specific advantages do you benefit from in the development of switching power supplies?

In our technical interview, GLYN's MOSFET expert Stefan Besier briefly introduces you to the two MOSFETs and answers important questions.

GLYN: "Hello Stefan, you have been working as a MOSFET expert in our ranks for 32 years. Customers value your wealth of experience. That's why we're allowing you to get a little more technical in our interview today. What are the advantages of the two new MOSFETs that our customers will particularly benefit from?"

Stefan Besier: First of all, thank you for the advance praise. Power electronics was already a particular passion of mine during my student days.
And MOSFETs in particular can quickly become a very hot affair when it comes to switching. But these two MOSFETs work very cool in their application in switching power supplies."

GLYN: "The manufacturer promises a reduction in locking delay time and charging. How did TOSHIBA achieve this?"

Stefan Besier: "The intrinsic high-speed diodes offer improved reverse recovery behavior, which is crucial for applications with synchronous rectification. In the case of the TPH1400CQ5, the reverse recovery charge (Qrr) has been reduced by approx. 73 % to 27nC (typ.). The reverse recovery time (trr) of 36 ns (typ.) is approx. 45 % faster than the existing TPH1400CQH from TOSHIBA. Both types offer the same reverse voltage and an identical RDS(ON). The TPH1400CQ5 is used in synchronous rectification applications to reduce the power dissipation of switching power supplies and improve efficiency. If the device is used in a circuit that does not operate in reverse recovery mode, the power dissipation corresponds to that of the TPH1400CQH with standard diode."

GLYN: "What can you tell us about the reduction in voltage peaks?"

Stefan Besier: "When used in a circuit that works in reverse recovery mode, the new products reduce the voltage peaks that occur during switching. They therefore help to improve the EMI properties of the design and reduce the need for external filtering.

This is achieved by the low-spike technology of the U-MOS X-H series.

In this technology, the parasitic capacitances and resistors of the MOSFET chip are modified to form a snubber element.

As the snubber is located directly on the MOSFET chip, voltage spikes are effectively suppressed without causing any significant additional losses.

GLYN: "TOSHIBA talks about high performance in demanding applications. How can our users understand this?"

Stefan Besier: "These MOSFETs are capable of handling high drain currents (up to 49 A or 32 A). They have an RDS(ON) of 11 mΩ (TPH1100CQ5) or 14 mΩ (TPH1400CQ5). Both are housed in an SOP Advanced(N) housing.

For applications that require even more power, we offer the TPH9R00CQ5, a type with an RDS(ON) of only 9 mΩ. This then has a current carrying capacity of 64 A.

The chip's copper connectors ensure low contact resistance and good heat dissipation.

Like all components in the U-MOS X-H series, our two new additions can also be operated up to a chip temperature of 175 degrees Celsius.

The UMOS X-H series currently comprises five derivatives with 150 V reverse voltage. Three of them have the specially tuned high-speed diode.
Further types, also with other reverse voltages, will follow.

*with High-Speed Diode

All components are in production. Samples can be provided at short notice if required.

TOSHIBA has a large number of other low-voltage MOSFETs in its portfolio.
As a first quick information I recommend the following overview to our customers - download here

GLYN: "Thank you for the interesting technical discussion and stay with us for a long time with your expertise!"

We will be happy to provide you with further information and answers and specific answers to your current application challenge in person.

Start the development of your next switching power supply together with GLYN-SUPPORT now.