Power adapters are a type of electronic device commonly used in our daily lives. They can convert AC to DC and 

adjust the voltage and current to levels suitable for device use. Power adapters are widely used in various scenarios, 

such as small household appliances (desk lamps, air purifiers, electric shavers, aroma diffusers, massage guns, 

massagers, etc.) and office equipment (routers, fiber optic modems, set-top boxes, switches, printers, notebook 

computers, tablet computers, etc.). The Chengxin Micro 18W power adapter solution is highly praised for its 

ultra-compact peripherals, low standby power consumption, and high conversion efficiency, bringing users a more 

efficient, convenient, and safe charging experience.

12V1.5A Level VI energy efficiency power supply adapter solution recommend CX7318+CX7538BS     18W

CX7318/CX7324+CX7538BS combination 18W/24W Co-board adapter solution design(12V1.5A/12V2A Level VI energy efficiency )

CX7330/CX7336+CX7538B  combination 30W/36W Co-board adapter solution design(12V2.5A/12V3A Level VI energy efficiency)

High cost-performance ratio 12V1.5A/18W Level VI energy efficiency adapter solution, the main controller CX7318 is a 

current mode PWM control chip with a built-in high-voltage power MOSFET. The secondary side synchronous 

rectification CX7538BS is a high-performance switch-mode power supply secondary side synchronous rectification 

control circuit that supports various operating modes such as CCM (Continuous Conduction Mode), QR (QuasiResonant) ,and DCM (Discontinuous Conduction Mode). The entire chip solution has a simple circuit structure with fewer peripheral components, suitable for low-power AC/DC power adapters and chargers.

12V1.5A/18W Level VI Energy Efficiency Adapter Scheme Main Features:

1. The input voltage range is 90VAC~264VAC

2. Output standby power consumption is lower than 75mW @230VAC.

3. Output 12V1.5A

4. The total output power is 18W.

5. The output ripple is 100mV.

6. It has the functions of output over-current protection, short-circuit protection and over-temperature protection.

7. Comply with "DOE&COC" level 6 energy efficiency standard.

8. Pass the EMI test standard of EN55032 ClassB.

9. Pass EFT and Surge 4KV test standards.

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