PTC Heaters

Heating up the cabin of hybrid and battery electric vehicles can be challenging. Positive temperature coefficient (PTC) heaters offer efficiency, dependability, and can eliminate any risk of overheating – improving passenger comfort and safety in 48V systems and optimizing charging for longer range in high voltage (HV) systems.

Allegro offers compact solutions, including half-bridge gate drivers with high isolation, current sensors, and EMC-compliant safety-focused DC/DC regulators, to provide customers with reliable and safe solutions that reduce their overall PTC heater footprint.

High Voltage 400V / 800V PTC Heaters application diagram
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    DC/DC Regulator ICs

    ARG81800 – 1A, Synchronous Rectified Buck DC/DC

    APM81803 – 3A, Synchronous Buck Regulator Module

    APM81911 – 3A, Synchronous Buck Regulator Module

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    Current Sensor

    ACS772 – Ultra-efficient, Isolated 200A Current Sensor (5V)

    ACS773 – Ultra-efficient, Isolated 200A Current Sensor (3.3V)

    ACS71240 – Integrated current sensor with Overcurrent

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    Isolated Gate Driver

    AHV85110 – GaN Gate Driver with Power-Thru technology

    AHV85111 – GaN Gate Driver with Power-Thru technology

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48V System PTC Heater application diagram
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    DC/DC Regulator ICs

    ARG81800 – 1A, Synchronous Rectified Buck DC/DC

    APM81803 – 3A, Synchronous Buck Regulator Module

    APM81911 – 3A, Synchronous Buck Regulator Module

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    80V Half-Bridge Gate Driver for Series Connected Loads

    A89503 – 80V Half Bridge Gate Driver Close