ST 公司的STEVAL-IHM021V2 是用于矢量控制的采用L6390和STD5N52U的100W三相逆變器演示板,輸入電壓寬,230Vac輸入時的最大功率達100W,具有和STM3210B-EVAL板接口的連接器,目標應用為冰箱壓縮機和洗碗機電泵.本文介紹了高壓器件L6390主要特性,方框圖,應用框圖,和馬達控制系統架構圖以及采用L6390和STD5N52U的100W三相逆變器演示板主要特性,方框圖和電路圖.
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應用:
■ Motor driver for home appliances, factory automation, industrial drives.
■ HID ballasts, power supply units.
圖1.L6390方框圖
圖2.L6390應用框圖
采用L6390和STD5N52U的100W三相逆變器演示板
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.
圖3.STEVAL-IHM021V2 演示板外形圖
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 演示板目標應用:
● Refrigerator compressors
● Dishwasher pumps
圖4.馬達控制系統架構圖
圖5.STEVAL-IHM021V2 方框圖
圖6.STEVAL-IHM021V2 逆變器電路圖
圖7.STEVAL-IHM021V2 電源電路圖
詳情請見:
http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/DATASHEET/CD00186965.pdf
和
http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/USER_MANUAL/DM00041947.pdf
