STEVAL-ISA119V1
1.5 W double output buck demonstration board based on the
VIPER16LD
Data brief
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.
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
June 2013
DocID024486 Rev 1
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4
For further information contact your local STMicroelectronics sales office.
STEVAL-ISA119V1
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