This Reference Design provides design guide, data and other contents of the Air Conditioner Outdoor Unit that control two motors (fan motor, compressor) and a PFC circuit with a single MCU.
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Input voltage | AC 220 V (Typ.) |
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Control Method | Sensorless vector control |
Rated Output | PFC: 1500 W, Fan motor: 200 W, Compressor: 1300 W |
Switching Frequency | PFC: 60 kHz, Fan motor: 16kHz, Compressor: 6.5kHz |
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Part Number | Device Category | Portion Usage | Description |
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TXZ+4A | PFC control and Sensorless vector control ・1 | ||
Intelligent power device 600V (High voltage PWM DC brushless motor driver) | Fan motor driving Circuit・1 | 600 V/2.5 A 3-phase Brushless DC Motor Driver IC built-in Power Device, SSOP30 | |
Discrete IGBT | PFC circuit・1 | ||
Power MOSFET (N-ch 500V<VDSS≤700V) | Compressor circuit・6 | N-ch MOSFET, 600 V, 0.175 Ω@10V, TO-220SIS, DTMOSⅣ | |
DMOS transistor array | Valve Control circuit・1 | ||
Photocoupler (phototransistor output) | Indoor unit communication circuit・2 | Photocoupler (phototransistor output), DC input, 5000 Vrms, DIP4(TLP785) | |
SiC Schottky barrier diode | PFC circuit・1 | 650 V/24 A SiC Schottky Barrier Diode, TO-247 | |
Comparator (CMOS) | PFC circuit・1 | Dual Comparator (CMOS), 7 V, +/-3.5 V, SOT-505(SM8) | |
Comparator (Bipolar) | Compressor circuit・1 | Single Comparator (Bipolar), 36 V, +/-18 V, SOT-25(SMV) |
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