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Power Supply for Air Conditioner
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Overview
Because air conditioners operate at comparatively high power levels, a PFC (Power Factor Correction) circuit is generally incorporated into the power supply. In low-cost systems for countries with no restrictions on power line harmonics, the PWM (Pulse Width Modulation) function of the MCU is typically used to implement a partial-switching configuration. This enables some improvement of the power factor while requiring few components. Japan has relatively loose restrictions on power line harmonics, so Renesas offers a variety of MCU products for different price ranges. They can be combined with IGBTs to match the requirements of customers. In high-end air conditioner models and models for countries with strict restrictions on power line harmonics, a full-switching configuration employing a PFC IC is used. Typically, a continuous conduction mode PFC circuit is employed to ensure efficiency. The use of full-switching PFC circuits has generally been limited to high-end models due to the larger number of components and the increase in noise.
Now, however, the R2A20114A continuous conduction mode PFC IC from Renesas provides interleaved operation at high power levels along with inexpensive anti-noise measures, enabling manufacturers to design low-cost air conditioner models that combine a high power factor and high efficiency.
System Block Diagram
Recommended Products
Full-Switching PFC IC
| PFC IC | Part no. | Mode | VCC Maximum (V) | Tj operation | Drive peak current |
|---|---|---|---|---|---|
| R2A20114A | Continuous interleave | 24 V | -40 to +150 ℃ | -1000 mA (source) / 1000 D1mA (sink) |
Full-Switching Interleaved IGBTs
| PFC type | Recommended IGBT | P/N | VCES (V) | IC (A) | VCE (sat) typ. (V) | tf typ (ns) | FRD | Package | |
|---|---|---|---|---|---|---|---|---|---|
| Conditions | |||||||||
| Active filtering Type 2 (f = 50 kHz or more) |
Ultrafast switching type |
RJP6085DPN | 600 | 40 | 2.65 | Ic=40 A | 40 | － | TO-220AB |
| RJP6085DPK | 600 | 40 | 2.65 | Ic=40 A | 40 | － | TO-3P | ||
| RJH6085BDPK ** | 600 | 40 | 2.65 | Ic=40 A | (40) | Built-in | TO-3P | ||
| RJH6086BDPK ** | 600 | (45) | (2.75) | Ic=45 A | (45) | Built-in | TO-3P | ||
| RJH6087BDPK ** | 600 | (50) | (2.75) | Ic=50 A | (50) | Built-in | TO-3P | ||
| RJH6088BDPK ** | 600 | (60) | (2.75) | Ic=60 A | (60) | Built-in | TO-3P | ||
| Active filtering Type 2 (f = 20 kHz or more) |
Low VCE (sat,) type | RJH60F0DPK ** | 600 | 50 | 1.4 | Ic=25 A | 90 | Built-in | TO-3P |
| RJH60F4DPK | 600 | 60 | 1.4 | Ic=30 A | 80 | Built-in | TO-3P | ||
| RJH60F5DPK | 600 | 80 | 1.37 | Ic=40 A | 80 | Built-in | TO-3P | ||
| RJH60F6DPK * | 600 | 85 | 1.35 | Ic=45 A | 95 | Built-in | TO-3P | ||
| RJH60F7ADPK | 600 | 90 | 1.35 | Ic=50 A | 95 | Built-in | TO-3P | ||
*: New product **: Under development
Partial-Switching IGBTs
| PFC type | Recommended IGBT | P/N | VCES (V) | IC (A) | VCE (sat) typ. (V) | tf typ (ns) | FRD | Package | |
|---|---|---|---|---|---|---|---|---|---|
| Conditions | |||||||||
| Active filtering type |
For partial-switching | RJP60D0DPK * | 600 | 30 | 2 | Ic = 40 A | 100 | － | TO-3P |
| RJP60D0DPM * | 600 | 40 | 2 | Ic = 40 A | 100 | － | TO-3PFM | ||
*: New product
Photocoupler Lineup
| Block | Semiconductor device | Recommended products | Features, etc. |
|---|---|---|---|
| Indoor-outdoor unit signal I/F |
General-purpose photocouplers |
PS25xx Series PS27xx Series PS28xx Series |
High insulation voltage tolerance (5 kV r.m.s.), 4p-DIP High insulation voltage tolerance (3.75 kV r.m.s.), 4p-SOP High insulation voltage tolerance (2.5 kV r.m.s.), 4p-SSOP |
| High-speed photocouplers |
PS8101 PS9122 |
Analog output, 1 Mbps, 5p-SOP Digital output, 1 Mbps, 5p-SOP |
|
| For TRIAC Control | General-Purpose Photocouplers |
PS25xx Series PS27xx Series PS28xx Series |
High insulation voltage tolerance (5 kV r.m.s.), 4p-DIP High insulation voltage tolerance (3.75 kV r.m.s.), 4p-SOP High insulation voltage tolerance (2.5 kV r.m.s.), 4p-SSOP |
| PFC circuit I/F | Photocouplers for IGBT drive |
PS9306 (6p-SDIP) PS9506 (8p-DIP) |
High insulation voltage tolerance (5 kV r.m.s.), 0.6 A output High noise tolerance (CMR = 25 kV) |
MCU Lineup for Outdoor Unit Control
| Series | CPU | Max. operating frequency | Memory | Inverter timer | A/D converter | Serial | Package | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Flash (KB) | Data flash (KB) | RAM (KB) | 12-bit | 10-bit | SCI | I2C | SPI | |||||
| V850E/IF3 | V850E | 64 | 128/256 | - | 8/12 | 2 | 10ch | 4ch | 4/3* | 1 | - | LQFP80 |
| V850E/IG3 | 64 | 128/256 | - | 8/12 | 2 | 10ch | 8ch | 4/3* | 1 | - | LQFP100 | |
| V850E/IG4 | 100 | 256/480 | - | 8/12 | 2 | 7ch | 12ch | 4/3* | 1 | - | LQFP100 | |
| SH/7149 | SH-2 | 80 | 256 | - | 8 | 2 | - | 12ch | 3 | - | - | LQFP100 |
| SH7146 | 80 | 256 | - | 8 | 2 | - | 12ch | 3 | - | - | LQFP80 | |
| RX62T** | RX | 100 | 64～256 | 32/8 | 16/8 | 1～3 | 8ch | 12ch | 3 | 1 | 1 | LQFP100 LQFP80 LQFP64 |
*: UART/Clock synchronous
**: New product
List of Photocouplers for Power Supplies
DC Input/Single-Transistor Output Type (Products Conforming to Overseas Various Safety Standards)
| Package | Part no. | Rating | Characteristics | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| BV @1 minute (kV r.m.s) | VCEO (V) | IC (mA) | CTR (Current transfer ratio) | Safty standard (Overseas safety standards) |
||||||
| Rank | Min. (%) | Max. (%) | FI (mA) | VCE (V) |
||||||
| 4-pin-LSOP | PS238-1 *1) | 5 | 80 | 50 | W | 130 | 260 | 5 | 5 | UL, CSA, SEMKO CQC VDE (option) |
| L | 100 | 300 | 5 | 5 | ||||||
| M | 50 | 150 | 5 | 5 | ||||||
| N | 50 | 400 | 5 | 5 | ||||||
| 4-pin-DIP 4-pin-DP (LF) 4-pin-DP (LF) 4-pin-DP (LF) |
PS2561A-1 PS2561AL-1 PS2561AL1-1 PS2561AL2-1 |
5 | 70 | 30 | L | 200 | 400 | 5 | 5 | UL, CSA, BSI SEMKO, NEMKO DEMKO, FIMKO CQC VDE (option) |
| W | 130 | 260 | 5 | 5 | ||||||
| Q | 100 | 200 | 5 | 5 | ||||||
| H | 80 | 160 | 5 | 5 | ||||||
| N | 50 | 400 | 5 | 5 | ||||||
| 4-pin-DIP 4-pin-DP (LF) 4-pin-DP (LF) 4-pin-DP (LF) |
PS2561D-1 *2) PS2561DL-1 PS2561DL1-1 PS2561DL2-1 |
5 | 80 | 50 | L | 200 | 400 | 5 | 5 | UL, CSA, BSI SEMKO, NEMKO DEMKO, FIMKO CQC VDE (option) |
| W | 130 | 260 | 5 | 5 | ||||||
| Q | 100 | 200 | 5 | 5 | ||||||
| H | 80 | 160 | 5 | 5 | ||||||
| N | 50 | 400 | 5 | 5 | ||||||
| 4-pin-SOP | PS2701A-1 | 3.75 | 70 | 30 | P | 150 | 300 | 5 | 5 | UL, CSA, VDE (option) |
| L | 100 | 300 | 5 | 5 | ||||||
| M | 50 | 150 | 5 | 5 | ||||||
| N | 50 | 300 | 5 | 5 | ||||||
| 4-pin-SOP | PS2761B-1*1) | 3.75 | 70 | 40 | K | 200 | 400 | 5 | 5 | UL, CSA, BSI SEMKO, NEMKO DEMKO, FIMKO CQC, VDE (option) |
| L | 100 | 300 | 5 | 5 | ||||||
| M | 50 | 150 | 5 | 5 | ||||||
| N | 50 | 400 | 5 | 5 | ||||||
| 4-pin-SSOP | PS2801C-1 | 2.5 | 80 | 30 | P | 150 | 300 | 5 | 5 | UL, CSA, VDE (option) |
| L | 100 | 300 | 5 | 5 | ||||||
| M | 100 | 400 | 5 | 5 | ||||||
| N | 50 | 400 | 5 | 5 | ||||||
| 4-pin-SSOP | PS2861B-1 *2) | 3.75 | 70 | 50 | L | 100 | 300 | 5 | 5 | UL, CSA, BSI SEMKO, CQC VDE (option) |
| M | 50 | 150 | 5 | 5 | ||||||
| N | 50 | 300 | 5 | 5 | ||||||
*1) Ta = 115 ℃ (guaranteed) *2) Ta = 110 ℃ (guaranteed)
| Block | Semiconductor device | Recommended products | Features, etc. |
|---|---|---|---|
| Outdoor unit | Shunt regulator | HA17431 Series | Optimal for output voltage detection of outdoor unit power supply |
| μPC1093, μPC1943/1944 | |||
| PFC (IGBT) | RJH608xBDPK* , RJH60F Series | Optimal for active filter systems, high-speed switching | |
| PFC (IC) | R2A20114A | Continuous conduction mode interleaving | |
| R2A20115 | Continuous conduction mode single | ||
| R2A20132 | Critical conduction mode interleaving | ||
| EEPROM | R1EX24xxx Series | I2C-bus Interface *1 | |
| R1EX25xxx Series | SPI-bus Interface *2 | ||
| Discrete (inverter) |
IGBT | RJH60D Series | Built-in FRD |
| MOSFET | RJL60 Series | Parasitic Di high-speed trr type | |
| MCU Peripherals | Sensor signal amplifier CMOS op-amp |
HA1630xxx Series | Low power consumption |
| μPC358 | |||
| Reset IC | RNA519xx Series | Variable detection voltage |
*: Under development
*1 I2C: Inter-Integrated Circuit
*2 SPI: Serial Peripheral Interface
Related Application Notes/Sample Code
| Title | Document No. |
|---|---|
| Power MOS FET application note | REJ05G0001-0200 |
| R2A20114A application note * | - |
| R2A20115 application note * | - |
| R2A20132 application note * | - |
| SH7080/SH7146/SH7125/SH7200 Series application note three-phase complementary PWM output | REJ06B0474-0100 |
*: Please contact your sales representative or contact us directly.
Related Boards
| Name | Part No. |
|---|---|
| R2A20111 evaluation board * | - |
| R2A20114A evaluation board * | - |
| R2A20115 evaluation board * | - |
| R2A20132 evaluation board * | - |
*: Please contact your sales representative or contact us directly.
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