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CM1713S

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Package : SOP8
With MOSFET : Built-in
MOSFET/BJT : MOS
BVdss : 650V
RDS(on) : --
Standby Power : <75mW
CC/CV Precision : ±5%
Max Vdd : 24V
Max Oper.Frequency : 80K
Output Power : 5V/3A
Product details

product description

CM171XS is a high-performance switching power supply chip used in primary-side sampling and control. Its built-in power MOSFET can be used in offline switching power supply products within 24W. CM171XS adopts PFM control method when working in constant current mode, and adopts PWM+PFM control method when working in constant voltage mode, so that high-precision constant voltage and constant current control effects can be obtained without any secondary sampling and control circuits. . At the same time, the chip has a bottom opening function, which better optimizes system efficiency and EMI. CM171XS also has built-in input line voltage compensation and output cable compensation, so that a better voltage and current adjustment rate can be obtained. CM171XS has a large number of built-in compensation and protection functions, which simplifies the peripheral circuit, facilitates PCB layout and EMI design, improves the reliability of the solution, and reduces the cost of the solution.

 

main feature

Primary side control does not require optocoupler and secondary control circuit
PWM+PFM multi-mode mixed control
AC working voltage range 175~264V
Built-in 650V power MOSFET
±3% constant voltage accuracy and high constant current accuracy
No-load power consumption in typical applications <75mW @230V
Built-in soft start circuit
Built-in output line compensation
Built-in frequency jitter
Built-in inductance compensation
Ultra-low startup power consumption (< 5uA)
Built-in over-current protection, over-voltage protection, short-circuit protection, over-temperature protection and other protection functions
Cycle-by-cycle current limit
Dynamic gate drive
Applicable power <24W

 

Scope of application

Travel charger & adapter
Flyback converter

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CM1713S
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