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Hitachi Power Semiconductors

High Voltage Monolithic ICs

Q1.What kind of typical end-applications use these Inverters?

As a general guide:

Motor Driver ICs series
ECN301*1 Home air-conditioning, indoor fans, domestic boiler combustion fans, air purifies, bathroom dries, etc.
ECN302*1 Home air-conditioner outdoor fan.
ECN306*2 White Goods and package air-conditioner, automatic doors, etc.
*1
VSP input including 120-degree control circuitry. Principally used for comparatively simple variable speed fan motor control.
*2
6 IGBTs can be individually controlled. Used for applications requiring precision control, such as 180 degrees commutation mode for example.
Gate Driver ICs series
ECN303*3 Pumps, dishwashers, etc.
ECN305*4 Washing machines, air-conditioner compressor, refrigerators, general purpose inverters, etc.
*3
VSP input including 120-degree control circuitry. Principally used for comparatively simple variable speed fan motor control.
*4
6 IGBTs can be individually controlled. Used for applications requiring precision control, such as 180 degrees commutation mode for example.

Q2. What advantage is offered by driving motors at Line Voltage levels?

Inverter Ics can be connected directly to a DC voltage supply. For example, in AC100V/AC200V, the voltage of DC141V/DC282V is applied to IC. The following effects are acquired when it was enabled to drive a motor by the high voltage that is not in motor drive IC of the conventional low-voltage system.

Low vs HIGH-Voltage BLDC Motor Control
No. LOW-Voltage Brushless DC HIGH-Voltage Brushless DC HIGH-Voltage Advantages
1 Regulate Line down to LOW-Voltage Not Needed NO Voltage Regulator losses
2 Diode Bridge Rectifier LOWER Diode Bridge Current LESS LOSS in Diodes due to LOWER Current
3 LOW-Voltage Controller but, HIGHER Current IGBTs HIGH-Voltage controller with LOWER Current IGBTs REDUCED IGBT Power Dissipation due to LOWER Current
4 LOW-Voltage Motor
(
HIGH-Voltage Motor
(
LOWER LOSS in Motor Resistance due to LOWER Current

Additional System Advantages of the HIGH-Voltage BLDC Motor Control Series

  • - A single high voltage supply line is required when this IC is mounted inside the BLDC Motor Case.
  • - Only one speed control line needed when this IC is mounted INSIDE the BLDC Motor Case.

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