STEVAL-ISA119V1 Datasheet, PDF (1/4 Pages) STMicroelectronics – High frequency output voltage ripple

STEVAL-ISA119V1
1.5 W double output buck demonstration board based on the
VIPER16LD
Data brief
Features
• Input voltage range (V_IN): 90 V_RMS to 265
V_RMS
• Output voltage 1 (V_OUT1) = 12 V
• Max output current 1: (I_OUT1) = 0.1 A
• Output voltage 2: (V_OUT2) = 5 V (through LDO)
• Max output current 2: (I_OUT2)= 0.05 A
• Precision of output regulation ΔV_{OUT_LF} = ±5%
• High frequency output voltage ripple
ΔV_{OUT_HF} = 50 mV
• Max ambient operating temperature T_A = 60 °C
Description
The STEVAL-ISA119V1 is a dual output buck
demonstration board using the VIPER16LD, a
new off-line high voltage converter by
STMicroelectronics which has been specifically
developed for non-isolated SMPS.
Output regulation is easily achieved through a
voltage divider to the output voltage.
The VIPER16LD can work with or without an
external supply. In the former case, very low
standby consumption is possible(< 50 mW at
265 V_ac) while in the latter case, the cost and
complication of the IC supply network may be
reduced.
The other features of the device include an 800 V
avalanche-rugged power section, PWM operation
at 60 kHz with frequency jittering for lower EMI,
limiting current with adjustable set point, on-board
soft-start and safe auto-restart after a fault
condition.
The available protection features are thermal
shutdown with hysteresis and delayed overload
protection.
June 2013
DocID024486 Rev 1
For further information contact your local STMicroelectronics sales office.
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www.st.com
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