CXW Technology 65W PD car charging scheme development, CX8836 buck and boost chip to bless. CX8836 is a cost down, high-performance, small-package vehicle charging and fast-charging scheme designed to meet the market demand. The size of a single C-port 65W DEMO is 43.26*16.58mm, which is suitable for the design of extremely small embedded vehicle charging.

The development of 65W PD fast charging scheme with small body and high energy is a small volume, high efficiency and high power vehicle charging scheme based on Buck-boost CX8836 as the main chip. The original factory provides data and technical support such as DEMO test and scheme development.

CX8836 small volume and high power vehicle PD fast charging scheme introduction:

You can clearly see the layout of the components on the board. There is a magnetic ring inductor+two capacitors and a Type-C output interface on the front, and there is also an N MOS tube 3075 next to the Type-C; In addition to the necessary chip capacitors and resistors, there is also a main chip Buck-boost CX8836+, (N MOS tube) CX3075B*2+ and (N MOS tube) CX3075*2+ full protocol chip CX2915C packaged in QFN4X4. The periphery looks quite compact, which is very suitable for extremely small embedded car charging design (such as BMW Mini)

CX8836 is a four-switch synchronous buck-boost control chip with wide input voltage: DC4.5V-40V and wide output voltage: DC3V-25V;

The CX8836 adopts current mode control in both buck and boost operation modes to achieve excellent load regulation capability.

CX8836 supports adjustable frequency and soft start.

CX8836 has a variety of built-in protection functions, including cycle-by-cycle current limiting, input under-voltage locking (UVLO), 

output over-voltage protection (OVP) and over-temperature protection to ensure product safety in different use environments.

Characteristic:

Input voltage: 4.5V--40VDC.

Adjustable output voltage: DC3V-25V can support small voltage adjustment of PD3.0(PPS) and QC4.0.

Switching frequency is adjustable.

Soft start time is adjustable.

Constant current accuracy: 8%

Constant pressure accuracy: 2%

Short circuit protection (SCP), overheating protection (OTP)

Weekly term flow

Input undervoltage lockout (UVLO)

Output overvoltage protection (OVP)

The highest efficiency can reach 96%

Qfn24l-4 * 4 package

Application:

Car charger

Usb PD power supply

Portable equipment power supply

CXW Technology 65W PD car charging Demo design development more details , please contact us or leave a message.