Microchip Makes EV Charging Payments Secure

The MXT2952TD 2.0 series of secure touchscreen controllers is introduced by Microchip Technology to assist EV charger builders in safeguarding their payment systems.

Building Safe Payment Systems for EV Charging

When a user enters their personal identification number (PIN) on the touchscreen of a typical touch-enabled human machine interface (HMI) or radio frequency identification (RFID) combination-based payment system, it is susceptible to hacking attacks through malicious software updates or man-in-the-middle attacks.

Features Built into the MXT2952TD 2.0 Series

• To prevent hacking, physical mesh barriers and sensors are frequently placed in the vicinity of these integrated circuits (ICs).
• Software integrity is protected via frequent software reflashes and device resets.
• Encrypting touch data and using cryptography to authenticate software updates are features built into the MXT2952TD 2.0 series.
• Helps to reduce risk and comply with PCI certification requirements.
• Building physical barriers for hack prevention is particularly challenging and costly when the RFID reader IC and the touchscreen controller are located on separate printed circuit boards (PCBs).
• The MXT2952TD 2.0’s embedded software offers EV charger makers an easier way to comply with security laws while avoiding the expense of installing a second, more costly touchscreen payment module to the charger.

Added Features of the New Microchip Secure Touchscreen Controllers

• Since EV charger HMIs are outside devices, they must be resilient to inclement weather, accurate in wet environments, and impervious to vandalism.
• When constructed with IK10 standard 6 mm-thick glass, anti-reflective, anti-glare, and anti-fingerprint coatings, as well as IR and UV filter layers, MXT2952TD 2.0 touch controller-based touchscreens continue to function well.
• Even while wearing heavy gloves, Microchip’s patented differential touch sensing provides outstanding noise immunity for improved touch performance.

“The maXTouch 2952TD 2.0 family provides EV charger designers with a cost-effective, secure design architecture for implementing credit card payments with PIN entry on their touchscreens,” said Patrick Johnson, senior corporate vice present overseeing Microchip’s human machine interface division. “Combined with the rugged, outdoor HMI touchscreen technology that Microchip’s maXTouch portfolio is known for, the new addition to the 2952TD family of touchscreen controllers offers our customers secure designs and the exceptional touch performance necessary for outdoor applications.”

Added Applications of the Microchip secure Touchscreen Controllers

In addition to EV chargers, the MXT2952TD 2.0 family is well-suited for most unattended outdoor payment terminals such as parking meters, bus ticketing meters and other types of point-of-sale (POS) systems. The 2952TD 2.0 is specifically optimized for 20” screen sizes and its sister part, the MXT1664TD, is available for 15.6” screen sizes.

Development Tools

The production end-of-line test/inspection tool maXTouch Analyzer and the integrated development environment (IDE) maXTouch Studio are among the standard maXTouch family development tools offered.

Microchip also has a number of factory-trained global touch sensor module partners to help support custom touch sensor and/or touchscreen display designs.

Pricing and Availability

For additional information and to purchase, contact a Microchip sales representative, authorized worldwide distributor or visit Microchip’s Purchasing and Client Services website, www.microchipdirect.com.