The Micronas HVC 2480B, a high-voltage controller for use in automotive and industrial applications, features advanced integration for a compact and cost-effective system design.

Reducing the number of external components to a minimum, the product’s flexible peripherals provide all means to control brush-type and brushless direct current (BLDC) motors either directly with the three fully integrated half-bridges or by driving external MOSFETs with six enhanced PWM outputs. The chip provides an ideal solution for smart actuator and smart sensor applications.

Beside timers/counters, interrupt controller, multichannel A/D converter, and enhanced PWMs, this family contains voltage regulators that allow the device to be connected to the 12 V battery supply directly and a LIN transceiver. Three fully integrated half-bridges allow to connect a BLDC motor without the need for external components. Various integrated digital and analog circuit units such as comparators with virtual star point reference or embedded amplifier allow users to minimize the number of external components and to control BLDC motors by different means like six-step commutation with sensor feedback or sensorless control with BEMF evaluation up to space vector control for permanent magnet synchronous motors (PMSM).

System Architecture

The HVC 2480B is based on the 8051 processor with two-clock machine cycle and operates with clock frequencies of up to 24 MHz. Due to an integrated oscillator with adjustable system clock there is no external crystal needed. An internal RC clock is used for the independent window watchdog and wake timer. I/O ports have multiple functions, work in the battery voltage range, and withstand the ISO 7637-2:2004 pulses. The built-in active EMI suppression logic minimizes the generation of disturbing electro-magnetic peak values.

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Block diagram of the HVC 2480B

Core

High-Voltage Technology

Advanced Integration

BLDC motor applications

Development Tools