How to Ensure 7-10 Year Warranty
Upowertek has strong R&D team, strict process and professional factory to ensure high quality of the LED drivers.
- Experienced Engineers
- Strict Process
- Qualified Components
- Adequate Design Margin
- Strict Verification Hardware System
Professional Technical Team
Jim Wang
Neo Dong
Nick Ke
Jack Han
Design Stages and Documentation
Market Analyze
- Customer enquiry
- Collect competitor’s info
- Evaluate market demand
- Evaluate cost
Project Initiate
- EVT, 1pcs
- Electrical performance test
- Functionality test
- Product Thermal test
Initial Design
- DVT, 3pcs, Functionality & Thermal
- Stress & EMI
- Electrical & ambient
- Life and MTBF
Pilot Run
- 100pcs, Functionality & thermal
- Electrical performance & ambient test
Final Design
- PVT, 30pcs, Functionality & thermal test
- Electrical & ambient test
- Life acceleration test
Stress Analysis
Upowertek performs stress analysis in the DVT stage and output reports for every product platform. All the LED drivers are designed with conservative margin.
MTBF Calculation
MTBF Calculation: MIL-HDBK-217
Software: Relcalc 217F2
Lifetime Calculation
Among all the components in an LED driver, the bulk electrolytic capacitor has the shortest life, so it determines the life of the whole device
- k is the factor determined by capacitor’s RMS ripple current and operating voltage, it is provided as either a value or a function,
- L0 is the lifetime value tested in standard condition provided in the datasheet,
- Ts is the rated case temperature,
- Ta is the operating case temperature.
Highly Accelerated Lifetime Test
Upowertek performs dual 85 test in the product design stage. 5pcs LED drivers is put inside a 85C temperature chamber, then test the performance at 100% output. The test will pass if the LED drivers works at least 21 days.
10kV Surge Protection Test
Upowertek LED drivers are designed with 10kV surge protection function, we use Everfine surge protection device to verify the test, ensure that the product is robust in the design stage.
Trustworthy Raw Material Suppliers
IC
NXP, ON, ST, Infineon
CAPACITOR
Rubycon, Nippon Chemi-Con
MOSFET
ST, Infineon
GDT
TDK, Littlefuse, Yageo
Strict Manufacturing Control
SMT
- 2 SMT lines
- Yamaha/Samsung printer
- 10 zone reflow soldering
- 100% AOI check
Wave Soldering
- 3 wave soldering machines
- Accurate solder temperature
- Long preheating zone
- 100% AOI check
Potting
- A, B glue certified by UL
- High thermal conduct coefficient
- Better waterproof performance
- 100% potting
Vacuumization
- Double Vacuumization
- Bubble free inside
- Great thermal conduction and reliability
Burn-in
- 8 sets burn-in machines
- Constant temp. 50C
- 4 hours at full load
- Electronic load simulates LEDs
ATS
- 8 sets auto testing machine
- Scan barcode before testing
- Date recorded and tracebale
- 100% test at full and 60% load
Worldwide Certifications
UL
RCM
ENEC
CCC
CB
ISO9001
CE
BIS