Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q (Mark One) ☒ Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended June 30, 2021 or ☐ Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from ______ to ______ Commission File Number 000-23441 POWER INTEGRATIONS, INC. (Exact name of registrant as specified in its charter) | Delaware | ...

Power Integrations, Inc. (NASDAQ:POWI) Q1 2021 Earnings Conference Call April 29, 2021 4:30 PM ET Company Participants Joe Shiffler – Director-Investor Relations Balu Balakrishnan – President and Chief Executive Officer Sandeep Nayyar – Chief Financial Officer Conference Call Participants Karl Ackerman – Cowen Tore Svanberg – Stifel Ross Seymore – Deutsche Bank David Williams – Loop Capital Gus Richard – Northland Capital Joe Shiffler All right. Good afternoon, everyone. Sorry for the delay. There were some ...

IS™ g Magic Strip Power Integrations, Inc. Nasdaq: POWI o ු 0 (3) April 2021 ac-dc converters led drivers Forward-Looking Statements/Non-GAAP Metrics These slides accompany an oral presentation by Power Integrations, Inc., which contains forward-looking statements. Each statement relating to events that will or may occur in the future is a forward-looking statement. The Company's actual 2 results may differ materially from those suggested in the presentation. Information concerning factors that could cause ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q (Mark One) ☒ Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended March 31, 2021 or ☐ Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from ______ to ______ Commission File Number 000-23441 POWER INTEGRATIONS, INC. (Exact name of registrant as specified in its charter) | Delaware | ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 000-23441 POWER INTEGRATIONS, INC. (Exact name of registrant as specified in its charter) | Delaware | 94-3065014 | | --- | --- | | (State or other jurisdi ...

NEWS RELEASE Power Integrations Reports Fourth-Quarter and Full-Year Financial Results Quarterly revenues increased 32 percent year-over-year to $150.7 million; GAAP earnings were $0.45 per diluted share; non-GAAP earnings were $0.60 per diluted share Full-year revenues grew 16 percent to $488.3 million; cash flow from operations was $125.6 million; quarterly dividend increases by 18 percent to $0.13 per share SAN JOSE, CALIF. – February 2, 2021 – Power Integrations (Nasdaq: POWI) today announced financial ...

Financial Data and Key Metrics Changes - Fourth quarter revenues increased 32% year-over-year to $151 million, exceeding expectations [5] - Non-GAAP operating margin expanded to 25%, with non-GAAP earnings at $0.60 per diluted share [5][17] - Cash flow from operations for the fourth quarter was $46 million, with capital expenditures of $35 million [19] Business Line Data and Key Metrics Changes - Consumer category, the largest end market, grew nearly 20% year-over-year in Q4, driven by robust demand in appliances [6] - Communications category grew more than 30% for the year, with significant contributions from fast charging for smartphones [9][17] - Industrial category saw low single-digit growth, constrained by pandemic-related delays, but is expected to benefit from secular trends [8][9] Market Data and Key Metrics Changes - Revenue mix for the quarter was 34% communication, 31% consumer, 26% industrial, and 9% computer [18] - The company expects first quarter revenues to be flat compared to Q4, with continued strength in cell phones offsetting seasonal declines in other categories [21] Company Strategy and Development Direction - The company is focusing on GaN products, which are gaining traction and expected to double or triple in revenue in 2021 [47][49] - Investments in R&D and capacity expansion are prioritized, with over $70 million spent on capital last year [12][19] - The company is strategically managing inventory to meet customer demand while avoiding excess stock [13][38] Management's Comments on Operating Environment and Future Outlook - Management acknowledges challenges due to the pandemic but remains optimistic about long-term growth in high power and renewable energy sectors [27] - The company anticipates a potential slowdown in cell phone demand but expects to gain market share from competitors [21][60] - Management expects gross margin to be around 50% for the full year, despite short-term fluctuations [22] Other Important Information - The quarterly dividend was increased to $0.13 per share, marking a total increase of 37% over the past four quarters [5] - The company is undergoing a leadership transition in operations, with Sunny Gupta taking over from Raja Petrakian [14][15] Q&A Session Summary Question: Visibility for the high power area of the industrial business - Management expects industrial segment growth but acknowledges pandemic-related delays may slow project resumption [26][27] Question: Impact of rising input costs on margin outlook - Prices have firmed but not increased; costs have slightly risen due to capacity pushes [28][29] Question: Dynamics of multi-port chargers and their impact on business - Multiple ports increase ASP significantly, benefiting from GaN products [31][32] Question: Supply constraints affecting revenue growth - Management believes they can meet customer demand and maintain capacity [37][38] Question: Seasonality shifts in the wireless side - The impact of out-of-the-box chargers is uncertain, but long-term prospects are positive [40][42] Question: Importance and growth of GaN products - GaN revenue is expected to double or triple in 2021, with significant inroads into OEM business [46][47] Question: Automotive segment design cycles - Long design cycles in automotive mean revenue from this segment will take time to materialize [50] Question: Visibility on inventory replenishment - Management anticipates potential channel replenishment in Q1, depending on demand post-Lunar New Year [64]

ls" Magic Strip Power Integrations, Inc. Nasdaq: POWI o ු 0 () December 2020 ac-dc converters led drivers Forward-Looking Statements/Non-GAAP Metrics These slides accompany an oral presentation by Power Integrations, Inc., which contains forward-looking statements. Each statement relating to events that will or may occur in the future is a forward-looking statement. The Company's actual 2 results may differ materially from those suggested in the presentation. Information concerning factors that could cause ...

Financial Data and Key Metrics Changes - Q3 revenues were $121 million, up 13% sequentially and above the top end of guidance, with a forecast for Q4 revenues of $130 million, plus or minus $5 million [8][19] - Non-GAAP gross margin decreased by 80 basis points to 50.3% due to a revenue mix shift towards lower-margin categories [22] - Non-GAAP earnings were $0.40 per diluted share, with cash flow from operations at $16.2 million [23][24] Business Line Data and Key Metrics Changes - Computer category revenues grew over 75% sequentially, driven by demand for inbox fast chargers for tablets [19] - Communication revenues increased by about 25% sequentially, while consumer revenues rose in the mid-teens, and industrial revenues declined in high single digits [20] - Revenue mix for the quarter was 32% communication, 31% consumer, 28% industrial, and 9% computer [22] Market Data and Key Metrics Changes - Strong demand in the consumer category was driven by appliances, while the communications sector benefited from trends in the smartphone market [9][10] - Channel inventories fell sharply, ending September at 4.3 weeks, down three weeks compared to the prior quarter [25] Company Strategy and Development Direction - The company is focused on expanding its GaN product offerings and expects to double GaN product revenue this year, with potential for further doubling in 2021 [16][96] - The company anticipates that fast charging will be the largest contributor to growth in Q4 and expects continued success in this area in 2021 [14][15] - The automotive market is seen as a long-term opportunity, with gradual revenue increases expected over the next several years [55][56] Management's Comments on Operating Environment and Future Outlook - Management noted that the operating environment remains uncertain due to the pandemic, but they expect a rebound in demand for appliances and continued strength in fast charging [19][26] - The company is optimistic about the growth potential in the computer market, driven by work-from-home trends and new design wins [84][85] - Management highlighted that the fast charging market is expanding into lower-end smartphones, which will contribute to revenue growth [71][72] Other Important Information - The company paid out $6.6 million in dividends following a dividend increase announced in conjunction with a stock split [24] - Capital expenditures for the quarter were $14.1 million, primarily for building construction and capacity additions [23][91] Q&A Session Summary Question: How is seasonality expected to behave in Q1? - Management indicated that Q1 could be slightly higher than normal due to strong sell-through in appliances and communications [35][36] Question: What are the expectations for OpEx growth relative to revenue growth in 2021? - Management provided a framework suggesting a slight increase in OpEx, with revenue growth expected to be in the low double digits [38] Question: Is GaN penetrating non-smartphone applications faster than expected? - Management expressed enthusiasm about design activity in non-smartphone applications, noting significant interest in areas like TVs and refrigerators [44] Question: What is the outlook for the automotive market? - Management stated that the automotive market will take several years to develop, but they are well-positioned for future growth [55][56] Question: How does the competitive landscape look with recent partnerships in high-voltage applications? - Management noted that they do not compete in the high-voltage market but have been gaining share in lower power levels against competitors [64] Question: What is the growth outlook for the computer market? - Management expects continued growth in the computer market, driven by strong demand for tablets and new design wins in notebooks [84][85]

IS™ g Magic Strip Power Integrations, Inc. Nasdaq: POWI o ු 0 () October 2020 ac-dc converters led drivers Forward-Looking Statements/Non-GAAP Metrics These slides accompany an oral presentation by Power Integrations, Inc., which contains forward-looking statements. Each statement relating to events that will or may occur in the future is a forward-looking statement. The Company's actual 2 results may differ materially from those suggested in the presentation. Information concerning factors that could cause ...