CY2525D
product description
CY2525D is a high-performance switching power supply chip used in primary-side sampling and control. Its built-in power BJT can be used for offline switching power supply products within 10W. CY2525D adopts the PFM control method when working in the constant current mode, and adopts the PWM+PFM control method when working in the constant voltage mode, so as to obtain high-precision
Constant voltage and constant current control effect without any secondary sampling and control circuit.
At the same time, CY2525D also has built-in input line voltage compensation and output cable compensation, so that a better voltage and current adjustment rate can be obtained.
CY2525D 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
• Built-in 800V power BJT
• ±4% constant voltage accuracy and high constant current accuracy within the full voltage range
• No-load power consumption in typical applications <75mW @230V
• Built-in soft start circuit
• Built-in output line compensation
• Built-in frequency jitter
• 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 transistor base drive
• Applicable power 10W
• SOP7 package
Scope of application
• Mobile phone battery charger
• AC/DC power adapter and LED lighting
Related documents
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CY2525D.pdf
Size:2021-03-31 18:04:47
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