Path: EDN Asia >> Product Centre >> Power/Smart Energy >> 40V MOSFET protects ECUs from reverse-battery connections
Power/Smart Energy Share print

40V MOSFET protects ECUs from reverse-battery connections

09 Nov 2015

Share this page with your friends

Diodes Inc. has rolled out a 40V P-channel MOSFET that aims to protect automotive electronic control units (ECUs) against the risk of reverse-battery connection. ECUs are used in a growing number of automotive control applications and, with some vehicles deploying up to 80 ECUs, the need to protect each one demands a simple and cost-effective solution, which the DMP4015SPSQ provides, stated the company.

The DMP4015SPSQ MOSFET acts as an ideal diode, allowing current to flow when the battery is correctly connected and blocking the current when the battery is accidentally connected in the reverse direction. Driving this device only requires a minimal number of passive components. By comparison N-channel MOSFETs require a charge pump to provide the gate drive voltage, adding complexity, cost and component count. Eliminating the switching topology of a charge pump also avoids issues with EMI emissions.

The avalanche rugged DMP4015SPSQ is 100 per cent unclamped-inductive switch (UIS) tested to ensure the MOSFET will withstand the worst-case ISO7637 energy pulse that would occur if the supply was disconnected while powering an inductive load. The low RDS(on) of the DMP4015SPSQ, less than 11mΩ, ensures that power loss is minimized, resulting in lower temperature operation; this eases thermal design considerations and improves reliability. The parallel configuration of several MOSFETs can further reduce power losses, by a factor of n2, noted Diodes.

The DMP4015SPSQ is offered in a PowerDI 5060 package and also available for the same application, are the DMP4015SK3Q in the TO252 (DPAK) package and DMP4015SSSQ in the SO-8 package.

Want to more of this to be delivered to you for FREE?

Subscribe to EDN Asia alerts and receive the latest design ideas and product news in your inbox.

Got to make sure you're not a robot. Please enter the code displayed on the right.

Time to activate your subscription - it's easy!

We have sent an activate request to your registerd e-email. Simply click on the link to activate your subscription.

We're doing this to protect your privacy and ensure you successfully receive your e-mail alerts.

Add New Comment
Visitor (To avoid code verification, simply login or register with us. It is fast and free!)
*Verify code:
Tech Impact

Regional Roundup
Control this smart glass with the blink of an eye
K-Glass 2 detects users' eye movements to point the cursor to recognise computer icons or objects in the Internet, and uses winks for commands. The researchers call this interface the "i-Mouse."

GlobalFoundries extends grants to Singapore students
ARM, Tencent Games team up to improve mobile gaming

News | Products | Design Features | Regional Roundup | Tech Impact