Disassembly report: CukTech Cooke 45W ultra-thin gallium nitride charger

2024-03-24

After introducing 65W ultra-thin gallium nitride fast charge, Cooke also introduced an ultra-thin gallium nitride fast charge with 45W output power. This charger is only 10.68mm thick, and its size has been greatly reduced, so it can be easily put into the pants pocket.

According to the volume, the power density is about 1.8W/cm ³， It is an ultra-high power density GaN fast charge. The charger is disassembled under the charging head network, and the materials and workmanship inside the charger are introduced in detail.

Previously, the charging head network had disassembled products such as Cooke Mini 20W Fast Charging Charger, Cooke 65W PD Fast Charging Gallium Nitride Charger, and Cooke Lighter 65W Ultra thin Gallium Nitride Fast Charging. Welcome to check.

Cooke Lighter 45W ultra-thin gallium nitride charger adopts planar transformer and gallium nitride technology, which is very compact. The folding pin is convenient for storage and can be put in a carry on bag as a supplement to the main charger. The charger supports QC2.0/3.0, AFC, FCP, PD3.0 and PPS fast charging protocols, and has a 5-20V full voltage range to meet the charging needs of laptops. It also has a good experience of Android phone charging.

The charging head network learned through disassembly that Cooke's 45W charger uses the south core sealed GaN chip CK01, which has the advantages of high integration and few peripheral components, and is very suitable for high power density GaN fast charging applications. The synchronous rectifier controller is from Silijie, model SY5238, with AOS synchronous rectifier tube. The output voltage is regulated by Weiquan WT6636F protocol chip through optocoupler feedback.

The high-voltage electrolytic capacitors and folding pins inside the charger are staggered to make full use of space. The PCBA module is insulated with plastic support, and the transformer core uses graphite thermal conductive patch to dissipate heat, which fully dissipates the heat generated by fast charging. The high-voltage electrolytic capacitor is from emerald, and the output filter capacitor is made of Kemei tantalum polymer capacitor, with compact internal structure and solid materials.