2A165

The 2A165 has fourteen features.(1)650V/800V avalanche rugged CoolMOS.(2)only few external components required.(3)input undervoltage lockout.(4)100kHz switching frequency.(5)Max duty cycle 72%.(6)low power standby mode to meet european commission requirements.(7)thermal shut down with auto restart.(8)overload and open loop protection.(9)overvoltage protection during auto restart.(10)adjustable peak current limitation via external resistor.(11)overall Tolerance of current limiting < ±5%.(12)internal leading edge blanking.(13)user defined soft start.(14)soft switching for low EMI.

The 2A165 has some absolute maximum ratings.(1):the parameter is drain source voltage,the symbol is VDS,the values is 650,the unit is V;(2):the parameter is avalanche energy,repetitive tAR limited by max. Tj=150,the symbol is EAR,the values is 0.2,the unit is mj;(3):the parameter is avalanche current,repetitive tAR limited by max. Tj=150,the symbol is IAR,the values is 1,the unit is A;(4):the parameter is VCC supply voltage,the symbol is Vcc,the values is -0.3 to 22,the unit is V;(5):the parameter is FB voltage,the symbol is VFB,the values is -0.3 to 6.5,the unit is V;(6):the parameter is softs voltage,the symbol is VSoftS,the values is -0.3 to 6.5,the unit is V;(7):the parameter is ISense,the symbol is ISense,the values is -0.3 to 3,the unit is V;(8):the parameter is junction temperature,the symbol is Tj,the values is -40 to 150,the unit is ;(9):the parameter is storage temperature,the symbol is Ts,the values is -50 to 150,the unit is ;(10):the parameter is thermal resistance junction-ambient,the symbol is RthJA,the values is 90,the unit is K/W;(11):the parameter is ESD capability,the symbol is VESD,the values is 2,the unit is KV.

The second generation COOLSET-F2 provides several special enhancements to satisfy the needs for low power standby and protection features. In standby mode frequency reduction is used to lower the power consumption and support a stable output voltage in 2A165. The frequency reduction is limited to 21.5 kHz to avoid audible noise. In case of failure modes like open loop,overvoltage or overload due to short circuit the device switches in Auto Restart Mode which is controlled by the internal protection unit. By means of the internal precise peak current limitation the dimension of the transformer and the secondary diode can be lower which leads to more cost efficiency.The information about the regulation is provided by the FB Pin to the internal Protection Unit and to the internal PWM-Comparator to control the duty cycle.