Jinxin releases automotive air conditioning compressor solution based on automotive grade chip ADP32F036QP48Q

Release time：2025-11-26 Source：Original

The car air conditioning system, as a key device for maintaining the thermal comfort environment inside the car, creates a comfortable driving space for drivers and passengers by accurately adjusting the temperature, humidity, air cleanliness, and airflow distribution inside the cabin, significantly enhancing the overall riding experience of the vehicle. In this system, the air conditioning compressor, as the core component of the refrigeration cycle, plays a crucial role in compressing and transporting refrigerant vapor, and its performance directly determines the efficiency and response speed of the air conditioning system.

To meet the comprehensive needs of automotive air conditioning for fast start stop, rapid cooling and heating, smooth operation, high efficiency and energy saving, and low noise, compressors must have excellent dynamic response and load adaptability. For this application scenario, Jinxin Electronics has launched a high-performance automotive air conditioning compressor solution. This solution uses the company's independently developed automotive grade chip ADP32F036QP48Q as the main control chip, combined with the sensorless FOC control algorithm designed specifically for compressors. It can accurately observe the load speed and torque, and has outstanding features such as fast and smooth start, high torque output in a wide speed range, stable high-speed operation, low vibration noise, and excellent overall energy efficiency, providing core support for the high performance and high reliability of automotive air conditioning systems.

Air conditioning compressor scheme

product parameters:

• Hardware composition: ADP32F036QP48Q+IPM

• Operating voltage: DC 400V/800V

• Power: 3000~4000W

• Motor: PMSM motor

• Control algorithm: dual resistor/single resistor non inductive FOC control

• Protection functions: overvoltage, undervoltage, overcurrent, phase loss, locked rotor protection, etc.

Scheme features:

• Strong load start capability, improving the success rate of load start

• Weak magnetic acceleration function, smooth entry and exit of weak magnetic

• Using self-developed algorithm scheme to make motor control smoother

Characteristics of the main control chip

The ADP32F036QP48Q is a high-reliability automotive-grade DSP chip specifically designed for automotive motor drives, air conditioning compressors, OBCs, and DC/DC converters, delivering exceptional cost-effectiveness and superior control performance.

Main frequency	100MHz
Acceleration unit	CLA control algorithm accelerator
stores resources	36KB RAM/128KB Flash
Communication interface	SPI/SCI/I2C/LIN/CAN/CANFD
Peripherals	10PWM+2CAP+delay filtering+3 32-bit timing/counters+5 16 bit timing/counters
analog peripherals	OPA+2PGA+3 comparator+temperature sensor+dual sampling hold
motor drive mode	Sensing/non sensing square wave; Sensible/Non Sensible Chord Waves

Control/power circuit

The control circuit utilizes the ADP32F036QP48Q chip, while the power circuit employs an Intelligent Power Module (IPM) with underbridge arm current sampling technology and CAN communication circuit, as illustrated in the figure below.

▲ supply circuit ▲ power module circuit

▲ master circuit ▲ CAN communication circuit

Test conditions and current waveforms

Jinxin Electronics Laboratory features a load testing system for automotive air conditioning compressors, enabling flexible adjustments to parameters like compressor type, back pressure, and balancing pressure. The compressor testing platform is shown in the figure below.

Based on the above design concept, our company has developed a board-level solution, with the following current waveform during product operation.

▲ start wave

▲ running waveform

Technical Support

Jinxin Electronics provides clients with the following solutions, including schematic diagrams, PCB reference boards, source code, and dedicated software/hardware development support. For further details, please contact us at 0731-88731027.