STSTEVAL-IHM021V2100W三相逆变器解决方案

来源:EEPw发布时间:2012-03-20357浏览

    The L6390 is a high-voltage device manufactured with the BCD “OFF-LINE” technology. It is a single chip half-bridge gate driver for N-channel power MOSFET or IGBT.

    The high side (floating) section is designed to stand a voltage rail up to 600 V. The logic inputs are CMOS/TTL compatible down to 3.3 V for easy interfacing microcontroller/DSP.

    The IC embeds an operational amplifier suitable for advanced current sensing in applications such as field oriented motor control.

    An integrated comparator is available for protections against overcurrent, overtemperature, Etc.

    L6390主要特性:

■ High voltage rail up to 600 V

■ dV/dt immunity ± 50 V/nsec in full temperature range

■ Driver current capability:

– 290 mA source,

– 430 mA sink

■ Switching times 75/35 nsec rise/fall with 1 nF load

■ 3.3 V, 5 V TTL/CMOS inputs with hysteresis

■ Integrated bootstrap diode

■ Operational amplifier for advanced current sensing

■ Comparator for fault protections

■ Smart shut down function

■ Adjustable dead-time

■ Interlocking function

■ Compact and simplified layout

■ Bill of material reduction

■ Effective fault protection

■ Flexible, easy and fast design

    L6390应用:

■ Motor driver for home appliances, factory automation, industrial drives.

■ HID ballasts, power supply units.

图1.L6390方框图

图2.L6390应用框图

    采用L6390和STD5N52U的100W三相逆变器演示板

    100 W 3-phase inverter demonstration board using the L6390 and STD5N52U for vector control

    The 100 W 3-phase inverter demonstration board features the L6390 and STD5N52U for field-oriented control (FOC) of permanent magnet synchronous motors (PMSM). Also referred to by order code STEVAL-IHM021V2, this 3-phase inverter is designed to perform the FOC of sinusoidal-shaped back-EMF PMSMs with or without sensors, with nominal power up to 100 W. The flexible, open, high-performance design consists of a 3-phase inverter bridge based on:

■ the STD5N52U power MOSFET in a DPAK package, with enhanced fast body-drain recovery diode

■ the L6390 device, which is part of the latest high-voltage half-bridge gate driver family featuring an integrated comparator for implementation of hardware protection (i.e. overcurrent, overtemperature, etc.)

■ an embedded operational amplifier suitable for advanced current sensing

    The system is specifically designed to achieve fast and accurate conditioning of the current feedback, thereby matching the requirements typical of high-end applications such as fieldoriented motor control. As an alternative to the STD5N52U, the STGD6NC60HD or STGDL6NC60DI IGBT devices may be used on the board without replacing the switch driving network.

    The board is compatible with 110 and 230 Vac mains, and includes a power supply stage with the VIPer12A-E (in buck configuration) to generate the +15 V and +3.3 V supply voltage required by the application. Finally, the board can be interfaced with the STM3210B-EVAL (STM32 microcontroller demonstration board) through a dedicated connector.

图3.STEVAL-IHM021V2 演示板外形图

    STEVAL-IHM021V2 演示板主要特性:

    The STEVAL-IHM021V2 100 W 3-phase inverter has the following characteristics:

● Wide range input voltage

● Maximum power up to 100 W at 230 Vac input

● The STD5N52U 4.4 A, 520 V power MOSFET

● Compatibility with other power switches in DPAK packages (the STGD6NC60HD or STGDL6NC60DI, for example)

● 15 V auxiliary power supply connector

● Connector for interfacing with the STM3210B-EVAL board

    STEVAL-IHM021V2 演示板目标应用:

● Refrigerator compressors

● Dishwasher pumps