TDK Corporation (TSE:6762) has expanded its Micronas embedded motor controller portfolio with the first members of the new HVC 5x family of programmable system-on-chip (SOC) motor controllers for driving small stepper, brushed (BDC) and brushless (BLDC) motors in automotive and industrial applications. The new HVC 5x family represents an application-specific evolution of the popular HVC 4x devices which were intended as a “one IC fits all” motor-control solution for stepper, BLDC and BDC motors. The new HVC 5221D and HVC 5222C are focused on individual motor types to enable lower-cost and smaller-form-factor applications. Samples are already available, start of production is planned for the beginning of 2024.
With the HVC 4x and the first two devices of the HVC 5x family, TDK is offering an ever-increasing portfolio of motor-control solutions for smart actuators with a specific focus on thermal systems in electric and hybrid vehicles. The HVC 5221D includes four motor terminals with a peak current of 500 mA each, focusing on stepper and DC motors in expansion and water valves. The HVC 5222C has three motor terminals, making it suitable for brushless motors with up to 1 A phase current for grille shutters and small fans.* Both devices include seven general-purpose I/O ports and many automotive diagnostic and safety features in small form-factor 24-pin QFN package. All HVC 5x controllers are pin compatible for easier design and scalability.
Commonalities across the HVC 4x and HVC 5x families include:
- 32-bit ARM® Cortex®-M3 CPU core
- 20 MHz system and 35 kHz watchdog oscillator
- 32k or 64k Flash memory versions with 2k or 4k SRAM
- 12-bit, 1-µs ADC for various measurements
- Digital periphery to support motor-control algorithms
- LIN transceiver and UART for communication and auto-addressing using the BSM method**
- Automotive qualification according to AEC-Q100 for temperature Grade 1
Glossary
- SRAM = Static RAM, volatile memory without the need to refresh
- ADC = Analog/Digital Converter
- LIN = Local Interconnect Network
- UART = Universal Asynchronous Receiver/Transmitter
- NVR= Non-volatile Register
Main applications**
- Expansion valves for refrigerant chillers
- Water valves for coolant distribution
- Fans for seat cooling and heating
- HVAC flaps for passenger air distribution
- Automatic sunshades
- Automatic grille shutters and spoilers to reduce aerodynamic resistance
- Charge-door actuators
Key data***
| Type | HVC 5221D | HVC 5222C |
| Motor terminals | 4 | 3 |
| Drive current | 500 mA (peak) | 1 A (peak) |
| High- and low-side on-resistance | 3 Ω | 1.8 Ω |
| Current measurement | Internal and external shunt | External shunt only |
| Microcontroller | 32-bit ARM® Cortex®-M3 CPU core | |
| Flash memory | 32 KB | |
| RAM | 2 KB | |
| EEPROM | 512 byte | |
| NVR | 256 byte | |
| Package | 5 x 5 mm2, 24-pin PQFN |
*Any mention of target applications for our products are made without a claim for fit for purpose as this has to be checked at system level.
** IP-Notice: If LIN auto-addressing features are used, third-party rights such as EP 1490 772 B should be considered.
*** All operating parameters must be validated for each customer application by customers’ technical experts.