Book 13 – LED Drivers

Zhaga Book 13 defines the interface specifications of LED drivers (also known as electronic control gear, or ECG) that can be used in combination with a wide range of non-integrated LED modules. 

In June 2017, Zhaga published a significantly updated version (Edition 2.0) of Book 13. This reduces complexity in the market by having significantly fewer mechanical form-factors than the earlier version. Overall, Edition 2.0 features only 27 categories, compared with 78 in Edition 1.0.

Also, Book 13 now addresses the electrical interface between LED drivers and LED modules, which is critical in determining whether components are interoperable.

For the module-driver electrical interface, Zhaga has chosen to reference specifications from MD-SIG, a global industry consortium. Where drivers and modules are compliant with the LEDset Power Interface specification from MD-SIG, this allows a meaningful comparison of product data to see if the driver-module combination is a viable option.

Publication status

Public downloads are available:

Download Book 13 (English) - Edition 2.0, June 2017

The Zhaga Consortium will review and update this specification from time to time. To ensure you are aware of any updates to the Zhaga specifications, please subscribe to the Zhaga newsletter.

MORE DETAILS - Mechanical interface

The reduction in mechanical form-factor categories represents consensus on a global basis among leading LED driver manufacturers. Removing unnecessary variations in components is a key feature of Zhaga standardization, and is highly beneficial for LED-driver vendors, luminaire makers and customers alike.

In Book 13 Edition 2.0, the categorization of product types has been simplified and the number of LED driver form-factors has been reduced to 27. Book 13 covers only “built-in” drivers, which are intended for mounting inside a luminaire or inside another separate enclosure. “Independent” drivers are not covered.

Zhaga has defined two broad categories, based on the number of mounting holes. For the 2-hole category, there are 17 form-factor categories based on different driver sizes, and there are a further 10 form-factors for the 4-hole category.

Zhaga uses a demarcation model to define the maximum volume that the driver can occupy. The demarcation also defines the minimum volume that needs to be provided inside the luminaire to enable mounting of the driver. For the 2-hole category of drivers, the driver itself can have either 1 or 2 mounting holes, located along the centre axis of the driver, while a compliant luminaire should have 2 mounting holes in corresponding positions. Similarly, for the four-hole category the driver can have 2, 3 or 4 mounting holes, at the corners of the demarcation area, while the luminaire should have 4 mounting holes.