BL-TRIAC module for leading/trailing-edge TRIAC dimming on CV/CC LED supplies
In trailing-edge / leading-edge TRIAC dimming projects, the usual blockers are mixed dimmer protocols, different PWM needs for constant-voltage strips vs constant-current fixtures, deep-dim flicker, and turn-on surge. Jarwey’s BL-TRIAC is a compact project-based TRIAC dimming control module—not a catalog IC—that samples the TRIAC waveform, conditions it, runs a dimming curve in MCU firmware, and outputs PWM for smooth deep dimming with soft-start.
Customization available: dimming curve, PWM frequency tier, leading/trailing-edge sense logic, pin map, and OEM labeling—project-based; sampling and small batch welcome.
What the module does
Built for constant-voltage / constant-current LED supplies with leading-edge and trailing-edge TRIAC dimmers. Signal path: TRIAC sense → RC filter → op-amp conditioning → ADC → curve → PWM. Soft-start on power-up.
Key metrics (from product note)
| Item | Value |
|---|---|
| Supply | 12–30 V (typ. 15 V), ~5 mA (max ~10 mA) |
| PWM duty | 0–100% |
| Curve | Logarithmic by default (customizable) |
| Typical PWM freq | Magnetic CV ~10 kHz; strip CV ~16 kHz; CC fixture ~1 kHz |
| Interfaces | ACL/ACN, VCC/GND, SW, PWM, AGND/VDD, DIMIN/PWM OUT |
Panels / systems to evaluate with (must verify)
Examples listed for joint evaluation (not drop-in system replacement): Opple P068102, Panasonic WMY549, Legrand VRCM2, Siemens 5UH82223-NC01, Lutron QSGR-3P, Siemens 5WG1 528-1D801, Schneider L5504D2A, and similar leading/trailing-edge gear.
7-step checklist before you freeze the design
- Topology: CV strip/track vs CC fixture—pick the matching PWM frequency tier.
- Leading / trailing edge: field dimmer type vs SW sense logic (firmware customizable).
- Aux supply: safe 12–30 V rail for the module.
- PWM load: direct MOSFET drive vs post-driver; min brightness OK?
- Deep dim: flicker and soft-start meet visual targets?
- Non-standard protocol: need custom curve or pin map?
- Pilot: sample and small-batch prove-out with Jarwey before volume.
Why a small OEM module
- Cost-effective path vs importing a full branded dimming appliance for the same job
- Flexible delivery: firmware, interface, labeling, sampling & small batch
- Project follow-up: selection, bring-up, lead-time coordination
Product page & docs
- Product: BL-TRIAC multi-function TRIAC dimming module (customization available)
- Note: Word datasheet (or request an updated copy)
Send your dimmer PN, CV/CC topology, and target curve to Jarwey: kerry.w@jarwey.cn · Contact.
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