1. Efficiency Through Technology 1 Components for Grid Connected Solar Inverters in Residential Applications

2. Efficiency Through Technology 2 Typical application reqeuirements Solar panel: - Stack of solar cells: 24 ~ 100+ V DC - Power: 2,5 ~ 15 kW Solar Panel Inverter Electric Grid Grid: - Single phase 230 V AC

3. Efficiency Through Technology 3 Solar Inverter Configuration 1 (most commonly used) Solar Panel Electric Grid Boost converter: -VDC input = 80 V (example)VDC input = 80 V (example) -VDC output = 400 V (typical)VDC output = 400 V (typical) -fsw = 80 kHz (typical)fsw = 80 kHz (typical) 1 2 3 1: Mosfet. Typically CoolMOS (page 113 of short form catalog; example: IXKH35N60C5) 2: IGBT. C3 series (page 92; example: IXGH48N60C3) advantages compared to Mosfet: cost, conduction losses 3: Diode. HiPerDynFred (page 121 example: DPH30IS600H1), SONIC (page 124; example DHG20I600HA) or HiPerFRED (page 122; example DSEP29-06B) 1 + 3: CoolMOS + HiPerDynFRED in one package (page 113; example FMD47- 06KC5) 1, 2 & 3: variations. Isolated / non isolated package; TO220/TO247/SMD/etc; wide range of current ratings

4. Efficiency Through Technology 4 Solar Inverter Configuration 1 (most commonly used) Solar Panel Electric Grid Inverter -VDC input = 400 V (typical)VDC input = 400 V (typical) -VAC output = 230 V (typical)VAC output = 230 V (typical) -fsw = 15 kHz (Example)fsw = 15 kHz (Example) IGBT (most typical solution). B3 series (page 92; example: IXGH36N60B3D1) Variations. Isolated / non isolated package; TO220/TO247/SMD/etc; wide range of current ratings; different speed IGBT (alternative). Phase leg (page 87; example: FII30-06D) IGBT (alternative). H-bridge (page 85; example: MKI50-06A7)

5. Efficiency Through Technology 5 Solar Inverter Configuration 2 (some new developments use distributed MPP tracking doe smaller cell groups for better overall efficiency) Solar Panel Electric Grid 1: Mosfet. Typically Trench Mosfet (page 98 - 100; example: IXTA230N075T2) 2: Diode. Typically Schottky (page 118 - 120; example: DSA30I100PA) 1, 2: variations. Isolated / non isolated package; TO220/TO247/SMD/etc; wide range of current ratings and voltages Boost converter: -VDC input = 18 V (example)VDC input = 18 V (example) -VDC output = 48 V (example)VDC output = 48 V (example) -fsw = 60 kHz (typical)fsw = 60 kHz (typical) 1 2 1

6. Efficiency Through Technology 6 Solar Inverter Solar Panel Electric Grid Inverter -VDC input = 400 V (typical)VDC input = 400 V (typical) -VAC output = 230 V (typical)VAC output = 230 V (typical) -fsw = 15 kHz (Example)fsw = 15 kHz (Example) IGBT (most typical solution). B3 series (page 92; example: IXGH36N60B3D1) Variations. Isolated / non isolated package; TO220/TO247/SMD/etc; wide range of current ratings; different speed IGBT (alternative). Phase leg (page 87; example: FII30-06D) IGBT (alternative). H-bridge (page 85; example: MKI50-06A7) Configuration 2 (some new developments use distributed MPP tracking doe smaller cell groups for better overall efficiency)