Smart Christmas Lights
App-controlled tree lights, strings and window décor with per-bead color, music sync and animation.
What are you building?
What are you building?
Start from your application — no need to understand power-line carrier protocols first.
Start selecting → Find Your ICPermanent Outdoor Lights
Year-round eave lighting — a color show for holidays, architectural white light every other night.
Curtain / Net Lights
2D bead matrices that show text and patterns — for venues, retail and home décor.
Copper Wire Lights
Micro beads on fine copper wire for tree wraps, shapes and indoor décor.
RGBW / CCT String Lights
Premium strings and bulbs that need true white or warm white alongside color.
Commercial / 3D Lighting
Malls, cities, stages and 3D light sculptures — high LED counts over long runs.
Replaceable Bulb Strings
Festoon / bistro bulb strings for patios and venues — users swap failed bulbs themselves.
Not sure yet?
Answer five questions and get one best match plus 1–2 alternatives from published specs.
Why PowerMOS
Why PowerMOS
Power MOS Electronics Ltd. (擎茂微電子) delivers one-stop power-line carrier holiday-lighting solutions — from IC and controller to software and mass-production ramp-up.
- 2006Founded in Shenzhen; first power-line carrier driver chip in 2015
- 18US/EU patents (7 owned + 11 licensed)
- 500KK+Cumulative shipments of the P9864X pixel-driver series
- CP+PVCIn-house CP test plant and PVC string line
Four competitive advantages
- 01
A complete product lineup
From cost-optimized standard parts and high-speed solutions to specialty uses such as permanent lights and replaceable bulbs — 50+ parts.
P9165XP9864/5/6P9831/2/5P9825P9779Products → - 02
Owned + licensed IP
7 owned and 11 formally licensed — 18 US/EU patents across controller, chip and software, so customers ship to the US and EU with confidence.
Patent portfolio → - 03
Long-term partner to international brands
We supply pixel ICs to international smart-lighting and festive-décor brands, holding outgoing bead defects to around 50 PPM.
Partners → - 04
Building the next generation
The new P9831 high-speed carrier protocol lifts 200-LED refresh from ~12 Hz to 41.5 Hz and 24V load from 250 to 300 LEDs.
P9831 series specs →
Advantages
Four generations and end-to-end integration
Chip architecture, protocol, addressing process and control system all developed in-house — ~50 PPM defect rate and 500KK+ chips shipped (incl. P9864 and P9831/P9832 series).
Patents
A technology barrier of 18 US/EU patents
Owned and licensed patents across controller, chip and software — camera addressing, address burning, bead structure and single-level carrier.
Complete Ecosystem
From chip to production, under one roof
Brands don’t have to integrate a string of suppliers — PowerMOS delivers the chip, bead, controller, app and production-line addressing.
- 01
IC design
PLC pixel-driver IC design and CP testing in our own test plant
- 02
LED bead
Bead packaging and final inspection; two-layer address allows random-reel assembly
- 03
Controller
Wi-Fi / Bluetooth modules, SD-card multi-channel controllers, protocol converters
- 04
Software / App
App control, camera addressing, music sync and effects
- 05
Production
In-line addressing at 2,400 beads/hour; our own PVC string line
Product Families
One lineup, from volume retail to flagship
Choose the chip by where your string sits: high-volume standard parts, premium strings that need smooth animation, or specialty jobs like year-round permanent lighting.
Cost-optimized standard parts
P9165XP9864P9865P9866
Built for high-volume seasonal strings — balancing cost, yield and lead time.
- P9165 single-level PLC: the controller needs just one MOSFET; bead current about 70% below the benchmark part
- P9864/5/6: the 512-code workhorse; together with the P9831/P9832 series, 500KK+ shipped
- RGB and RGBW, high and low voltage
High-speed premium solutions
P9831P9832P9835
A new carrier protocol that lets two-wire strings run smooth per-bead animation.
- 200-bead refresh 12 → 41.5 Hz, 3.37× faster
- 9-bit addressing: 511 beads per channel
- 24V load up from 250 to 300 beads (+20%)
Specialty applications
P9825P9779
Designed for demanding or special jobs such as permanent lighting and replaceable-bulb strings.
- P9825 permanent lighting: RGB + CW + WW, 16-bit grayscale, 25 kHz PWM with no flicker on video
- P9825: 36V architecture slashes line loss over long runs
- P9779 bulb strings: two-wire four-channel RGBW in standard E27 / GU10 bases
- P9779: factory 24-bit unique address — swap a dead bulb and the controller finds the new one
Plus 50+ more parts: RGBW four-channel, fixed address code, two-layer addressing for copper-wire lights See the full lineup →
Interactive Tools
Try the effects, then size the string
Why Power-Line Carrier
Traditional string lights have only two wires —
yet pixel control seems to demand a third
Shift registers need three wires; DMX512 needs five. Faced with a legacy string that gives each bead just two legs, modulating the signal onto the power line is the most direct answer. It's the path PowerMOS has bet on for two decades.
Fast — but one failure kills the string
Three-wire architectures like the WS2811 are fast, backed by a mature ecosystem, and have long dominated signage and LED strips. But the signal passes bead to bead, so a single failure breaks the whole string — a hard ceiling for premium outdoor work.
Addressable, but slow and costly
Born from stage lighting, this industry standard gives every bead its own address, and a single failure stays local. The trade-offs are a 250 Kbps ceiling and a high per-node cost — refresh rates struggle once bead counts climb.
Two wires carry power and data together
Modulate the address and grayscale data onto the power line and each bead needs only two legs. Individual addressing, failures that stay local, and support for automated in-line addressing — the line PowerMOS has kept refining ever since.
FAQ
Frequently asked questions
Quick answers about PowerMOS, power-line carrier pixel control and choosing a chip.
Who is Power MOS Electronics (PowerMOS)?
Power MOS Electronics Ltd. (擎茂微電子) is a Shenzhen-based IC design company founded in 2006 that specializes in power-line carrier (PLC) LED pixel driver chips, with R&D centers in Taiwan and Belarus. It supplies festive-lighting and smart string-light brands with a complete solution from IC and controller to mass production.
What is power-line carrier (PLC) LED pixel control?
Power-line carrier pixel control modulates address and grayscale data onto the power line, so power and control share the same two wires. Every LED bead has its own address and can be set individually, a single failed bead does not take down the rest of the string, and addresses can be written automatically on the production line.
How does PLC compare with WS2811 and DMX512?
WS2811-style shift-register LEDs need three wires and pass data bead to bead, so one failure can break the whole string. DMX512 gives every fixture an address but needs five terminals, tops out at 250 Kbps and costs more. Power-line carrier needs only two wires, keeps individual addressing and fault isolation, and fits the classic two-wire string structure.
Which LED driver ICs does PowerMOS offer?
Main families: P9864 / P9866 serial-parallel programmable pixel control, P9874 parallel programmable, P9865 / P9873 RGBW four-channel, P9867 / P9868 fixed-address (including the two-section address solution), P9871 dual-layer address for copper-wire lights, the P9831 / P9832 high-refresh series, P9165 single-voltage carrier constant-current driver, P9825 five-channel permanent-light driver and P9779 replaceable-bulb RGBW driver, plus matching controllers. See the Products page for every model.
What applications are PowerMOS chips used in?
Christmas string lights, net and curtain lights, copper-wire fairy lights, Christmas trees and 3D motifs, permanent (eave) lighting, replaceable-bulb strings, and decorative installations in malls, theme parks, stages and city lighting where every bead must be controlled individually.
How many patents does PowerMOS hold, and how many chips has it shipped?
PowerMOS holds 18 US and EU patents (7 owned + 11 formally licensed), covering camera-based address reading, parallel address detection, high/low-level code reading and more. Cumulative shipments exceed 500KK (500 million) chips, including the P9864 and P9831 / P9832 series.
How do I get samples, datasheets or a design recommendation?
Use the IC finder on the Solutions page, or click "Get a Solution" / "Request Samples" to send your requirements online. You can also email sales-02@powermos.com or call +86 755-2320 7019. Technical documents are available on request from our engineers.
Speccing your next season's product line?
Tell us your bead count, voltage and application, and our engineering team will send you a complete chip + controller proposal.