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Overview
| Topology | Other Topology |
| Input voltage | 160-285 V |
| Output 1 | 15 V |
| IC revision | 1.0 |
Description
Air conditioner (A/C) designs need to meet stringent energy efficiency ratings and power factor specifications to reduce overall power consumption. High energy efficiency is achieved by using an inverter-based variable speed drive for the brushless motor-based compressor and condenser fans. The variable speed drive and the sensorless field-oriented control (FOC) of brushless motors allow an appliance to operate at an optimal power setting compared to a fixed speed single phase AC induction motor (ACIM) drive. Power factor correction (PFC) is required for all high-power appliances to connect to the electrical grid. Microchip’s Air Conditioner reference design, based on the dual core dsPIC33CH family of digital signal controllers, demonstrates efficient control of the condenser fan, compressor, PFC and the overall application logic implementation. The high-performance dsPIC33C DSCs (Dual core dsPIC33CH DSCs and Single core dsPIC33CK DSCs) offer the right set of peripherals that is ideal for dual motor control and enables replacing three controllers with one for a cost advantage in your design. This reference design has proven power stages for high power PFC (220V, 1.8 KW), condenser fan (120 W) and compressor (1.34 KW) motor control. Additional features like temperature sensor interfaces, field communications and valve drives will enable you to develop on this platform for a wide variety of air conditioner systems like window A/Cs and the outdoor unit of split A/Cs.
Features
- Turnkey solution for Air Conditioner designs like Window A/Cs and the Outdoor Unit of Split A/Cs
- 1.8 KW input power stage, with Digital Interleaved Boost PFC with an efficiency of greater than 90% across the operating range, 0.991 PF and <5% THD
- Compressor Motor:
- Supports PMSM or IPMSM
- Up to 1.4KW Inverter Stage
- 4 to 20kHz Switching Frequency
- Variable Speed Motor Control
- Sensorless FOC
- Torque Compensation Field Weakening
- PLL Estimator
- Maximum Torque per Ampere (MTPA) for IPMSM
- Stall Detection
- Condenser FAN:
- Supports PMSM or IPMSM
- 150W Power Stage
- 20kHz Switching Frequency
- Variable Speed Motor Control
- Sensorless FOCWind Milling
- PLL Estimator
- Maximum Torque per Ampere (MTPA) for IPMSM
- Stall Detection with Recovery
- Field communication support with the Indoor Unit
- Optional support to use an ACIM or a built-in drive BLDC motor for the Condenser Fan
- Four temperature sensor interfaces for measuring: Ambient Air, Inlet Air, Outlet Air and Condenser Temperature
- Solenoid Valves and Electronic Expansion Valve (Stepper Motor) Control interfaces
- Fly-back DC-DC to generate 15-V, 12-V, and 3.3-V power rails
Typical applications
- AC adapters
- household appliances
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IR(A) | ISAT,10%(A) | RDC max.(Ω) | fres(MHz) | Version | C | VR(V (DC)) | Endurance(h) | IRIPPLE(mA) | ILeak(µA) | DF(%) | Pitch(mm) | Ø D(mm) | L(mm) | Packaging | Pins | Type | Mount | H(mm) | Working Voltage(V (AC)) | Operating Temperature | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-TI Radial Leaded Wire Wound Inductor, 6.8 µH, 2.2 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TI Radial Leaded Wire Wound Inductor | Inductance6.8 µH | Rated Current2.2 A | Saturation Current @ 10%3.1 A | DC Resistance0.035 Ω | Self Resonant Frequency40 MHz | VersionStandard | – | – | – | – | – | – | – | – | Length6 mm | – | – | – | MountTHT | Height6.5 mm | – | Operating Temperature -40 °C up to +125 °C | ||||
 | WCAP-ATG5 Aluminum Electrolytic Capacitors, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-ATG5 Aluminum Electrolytic Capacitors | – | – | – | – | – | – | Capacitance10 µF | Rated Voltage63 V (DC) | Endurance 2000 | Ripple Current42 mA | Leakage Current6.3 µA | Dissipation Factor9 % | Pitch2 mm | Diameter5 mm | Length11 mm | PackagingAmmopack | – | – | – | – | – | – | ||||
 | WCAP-ATLI Aluminum Electrolytic Capacitors, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-ATLI Aluminum Electrolytic Capacitors | – | – | – | – | – | – | Capacitance100 µF | Rated Voltage25 V (DC) | Endurance 2000 | Ripple Current410 mA | Leakage Current25 µA | Dissipation Factor10 % | Pitch2.5 mm | Diameter6.3 mm | Length11 mm | PackagingAmmopack | – | – | – | – | – | – | ||||
| WCAP-ATLI Aluminum Electrolytic Capacitors, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-ATLI Aluminum Electrolytic Capacitors | – | – | – | – | – | – | Capacitance330 µF | Rated Voltage35 V (DC) | Endurance 3000 | Ripple Current1210 mA | Leakage Current115.5 µA | Dissipation Factor9 % | Pitch3.5 mm | Diameter8 mm | Length20 mm | PackagingAmmopack | – | – | – | – | – | – | ||||
| WCAP-ATLI Aluminum Electrolytic Capacitors, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-ATLI Aluminum Electrolytic Capacitors | – | – | – | – | – | – | Capacitance330 µF | Rated Voltage25 V (DC) | Endurance 5000 | Ripple Current1010 mA | Leakage Current82.5 µA | Dissipation Factor10 % | Pitch5 mm | Diameter10 mm | Length12.5 mm | PackagingAmmopack | – | – | – | – | – | – | ||||
| WCAP-ATLI Aluminum Electrolytic Capacitors, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-ATLI Aluminum Electrolytic Capacitors | – | – | – | – | – | – | Capacitance470 µF | Rated Voltage25 V (DC) | Endurance 5000 | Ripple Current1415 mA | Leakage Current117.5 µA | Dissipation Factor10 % | Pitch5 mm | Diameter10 mm | Length16 mm | PackagingAmmopack | – | – | – | – | – | – | ||||
| WCAP-ATLI Aluminum Electrolytic Capacitors, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-ATLI Aluminum Electrolytic Capacitors | – | – | – | – | – | – | Capacitance680 µF | Rated Voltage25 V (DC) | Endurance 5000 | Ripple Current1570 mA | Leakage Current170 µA | Dissipation Factor10 % | Pitch5 mm | Diameter10 mm | Length20 mm | PackagingAmmopack | – | – | – | – | – | – | ||||
 | WR-PHD Pin Header - Single, –, 3 A | Simulation– | Downloads7 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Single | – | Rated Current3 A | – | – | – | – | – | – | – | – | – | – | Pitch2.54 mm | – | Length12.7 mm | PackagingBag | Pins5 | TypeAngled | MountTHT | – | Working Voltage250 V (AC) | Operating Temperature -40 °C up to +105 °C | ||
 | WR-PHD Pin Header - Single, –, 3 A | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Single | – | Rated Current3 A | – | – | – | – | – | – | – | – | – | – | Pitch2.54 mm | – | Length12.7 mm | PackagingBag | Pins5 | TypeStraight | MountTHT | – | Working Voltage250 V (AC) | Operating Temperature -40 °C up to +105 °C | |||
 | Simulation– | Downloads7 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Single | – | Rated Current3 A | – | – | – | – | – | – | – | – | – | – | Pitch2.54 mm | – | Length15.24 mm | PackagingBag | Pins6 | TypeAngled | MountTHT | – | Working Voltage250 V (AC) | Operating Temperature -40 °C up to +105 °C | |||
 | WCAP-AT1H Aluminum Electrolytic Capacitors, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-AT1H Aluminum Electrolytic Capacitors | – | – | – | – | – | – | Capacitance10 µF | Rated Voltage450 V (DC) | Endurance 10000 | Ripple Current390 mA | Leakage Current280 µA | Dissipation Factor20 % | Pitch5 mm | Diameter13 mm | Length20 mm | PackagingAmmopack | – | – | – | – | – | – |