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Compare · MPWR vs POWI

MPWR vs POWI

Side-by-side comparison of Monolithic Power Systems Inc. (MPWR) and Power Integrations Inc. (POWI): market cap, price performance, sector, and recent activity on the wire.

Summary

  • Both MPWR and POWI operate in Semiconductors (Technology), so they compete in similar markets.
  • MPWR is the larger of the two at $72.76B, about 17.0x POWI ($4.29B).
  • Over the past year, MPWR is up 123.4% and POWI is up 36.9% - MPWR leads by 86.5 points.
  • POWI has been more active in the news (11 items in the past 4 weeks vs 10 for MPWR).
  • MPWR has more recent analyst coverage (25 ratings vs 16 for POWI).
PerformanceMPWR+123.39%POWI+36.93%
2025-06-09+0.00%2026-06-08
MetricMPWRPOWI
Company
Monolithic Power Systems Inc.
Power Integrations Inc.
Price
$1577.40+6.74%
$77.90+1.08%
Market cap
$72.76B
$4.29B
1M return
+0.08%
+8.57%
1Y return
+123.39%
+36.93%
Industry
Semiconductors
Semiconductors
Exchange
NASDAQ
NASDAQ
IPO
2004
1997
News (4w)
10
11
Recent ratings
25
16
MPWR

Monolithic Power Systems Inc.

Monolithic Power Systems, Inc. designs, develops, and markets integrated power semiconductor solutions and power delivery architectures for computing and storage, automotive, industrial, communications, and consumer applications markets. It offers direct current (DC) to DC integrated circuits (ICs) that are used to convert and control voltages of various electronic systems, such as portable electronic devices, wireless LAN access points, computers and notebooks, monitors, infotainment applications, and medical equipment. The company also provides lighting control ICs for backlighting that are used in systems, which provide the light source for LCD panels in notebook computers, monitors, car navigation systems, and televisions, as well as for general illumination products. The company sells its products through third-party distributors, and value-added resellers, as well as directly to original equipment manufacturers, original design manufacturers, electronic manufacturing service providers, and other end customers in China, Taiwan, Europe, South Korea, Southeast Asia, Japan, the United States, and internationally. Monolithic Power Systems, Inc. was incorporated in 1997 and is headquartered in Kirkland, Washington.

POWI

Power Integrations Inc.

Power Integrations, Inc. designs, develops, manufactures, and markets analog and mixed-signal integrated circuits (ICs), and other electronic components and circuitry used in high-voltage power conversion worldwide. The company offers a range of alternating current to direct current power conversion products that address power supply ranging from less than one watt of output to approximately 500 watts of output for mobile-device chargers, consumer appliances, utility meters, LCD monitors, main and standby power supplies for desktop computers and TVs, LED lighting, and other consumer and industrial applications. It also provides high-voltage diodes; and high-voltage gate-driver products under the SCALE and SCALE-2 product-family names. In addition, the company offers motor-driver ICs for use in refrigerator compressors, ceiling fans, and air purifiers, as well as pumps, fans, and blowers used in consumer appliances, such as dishwashers and laundry machines. It serves communications, computer, consumer, and industrial markets. The company sells its products to original equipment manufacturers and merchant power supply manufacturers through sales personnel, as well as a network of independent sales representatives and distributors. Power Integrations, Inc. was founded in 1988 and is headquartered in San Jose, California.

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