STEVAL-ISA058V1 5 W single output SMPS demonstration board based on the VIPer17 off-line high voltage converter Features Input voltage range: 90 V to 265 V AC AC RMS Output voltage: 5 V Maximum output current: 1 A RoHS compliant Description The STEVAL-ISA058V1 demonstration board is a 5 W off-line power supply designed as an evaluation platform for the VIPer17 offline high voltage converter. STEVAL-ISA058V1 The VIPer17 features an 800 V rugged power section, PWM control, two levels of overcurrent protection, overvoltage and overload protection, hysteretic thermal protection, soft-start and safe auto-restart after fault condition removal. Burst mode operation and the very low consumption of the device help to meet standby energy saving regulations. Advance frequency jittering reduces EMI filter cost. A brown-out function protects the switch mode power supply when the rectified input voltage level is below the normal minimum level specified for the system. A high voltage startup circuit is embedded in the device. August 2009 Doc ID 16146 Rev 1 1/4 www.st.com 4 Obsolete Product(s) - Obsolete Product(s) / / / / / / / / 2 2 2 2 43 43 2 2 2 2 3/52 3/52 / /2/2/ .4.4 .4.42 2 2 2 2 2 /0/0 5 5 6)0%2 ,6)0%2 , & & 2 2 N& N& 2 2 / / 6 3403 , 3403 , Circuit schematic STEVAL-ISA058V1 1 Circuit schematic Figure 1. Schematic diagram K K K K K K U( U( N& N& , , 6 U&+ U&9 6+9 K K U&: 6: 6 U& - - 4 4/ / 0 0 99 42/2242/ N& N& K K %% .. 0 +% 0 +% 6 6 2 2 N& N& ,, N& N& 4 4 /.4 /.4 2 2 K K & 6 6& U U K K 6 U& U& 6 2 , /4 2 &, )4 2 & 2 , /) , 5 5 6 U& 6 U& N& N& 8 8 .. // ) ) %% / / 55 - V 2/4 Doc ID 16146 Rev 1 Obsolete Product(s) - Obsolete Product(s) 4 4 4 4 22 344( , 344( , * * 2 2 -%2-%2 .3& .3& 3%3% & & ). ). 2 2 HM .4HM .4 6262 * * K K * * * * * * * *