NCP1239DD65R2G Integrated Circuit Chip Offline Controllers 65kHz Current Mode Controllers

NCP1239DD65R2G Integrated Circuit Chip Offline Controllers 65kHz Current Mode Controllers

Product Description Of NCP1239DD65R2G

NCP1239DD65R2G is a fixed-frequency current-mode controller featuring the Dynamic Self-Supply. This function greatly simplifies the design of the auxiliary supply and the Vcc capacitor by activating the internal startup current source to supply the controller during start-up, transients, latch, stand-by etc.

With a supply range up to 35 V, the NCP1239DD65R2G controller hosts a jittered 65 or 100-kHz switching circuitry operated in peak current mode control. When the power on the secondary side starts to decrease, the controller automatically folds back its switching frequency down to minimum level of 26 kHz. As the power further goes down, the part enters skip cycle while limiting the peak current that insures excellent efficiency in light load condition.
NCP1239DD65R2G features a timer-based fault detection that ensures the detection of overload and an adjustable compensation to help keep the maximum power independent of the input voltage.

Specification Of NCP1239DD65R2G

Features Of NCP1239DD65R2G

Fixed-frequency 65-kHz or 100-kHz current-mode control operation
Frequency foldback down to 26 kHz and skip mode
Adjustable Over Power Protection (OPP) circuit
High-voltage Current Source with Brown-out (BO) detection
Internal ramp compensation
Internal fixed 8-ms soft-start
Frequency jittering in normal and frequency foldback modes
64-ms timer-based short-circuit protection with auto-recovery or latched operation
Pre-short ready
Latched OVP on Vcc (NCP1239 A & B versions)
Latched OVP/OTP input for improved robustness
35-V Vcc operation
+500 mA/ -500 mA peak source/sink drive capability
Internal thermal shutdown
Extremely low no-load standby power

Applications Of NCP1239DD65R2G
Auxiliary Power
Industrial Power

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FAQ
Q. Are your products original?
A: Yes, all products are original, new original import is our purpose.
Q:Which Certificates do you have?
A:We are ISO 9001:2015 Certified Company and member of ERAI.
Q:Can you support small quantity order or sample?Is the sample free?
A:Yes,we support sample order and small order.Sample cost is different according to your order or project.
Q:How to ship my order? Is it safe?
A:We use express to ship,such as DHL,Fedex,UPS,TNT,EMS.We can also use your suggested forwarder.Products will be in good packing and ensure the safety and we are responsible to product damage to your order.
Q:What about the lead time?
A:We can ship stock parts within 5 working days.If without stock,we will confirm lead time for you based on your order quantity.