Non-Isolated Auxiliary Power Supply up to 20W

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In a number of applications the reference of the secondary circuit is connected to the same reference as the primary – the AC mains. In such cases, an off-line non-isolated auxiliary power supply can be used to provide a regulated DC voltage using an inductor or low-cost transformer – with simplified isolation – as an energy transfer element by modulating the power supply’s duty-cycle. A buck – step-down – topology can be used to generate a positive output with respect to the common terminal and a buck-boost – or step-down/up – when the output voltage needs to be negative. A non-isolated fly-back converter is the alternative when a higher output power is required.

Our products and solutions

We offer a range of integrated – actually a power MOSFET, PWM controller and protection circuitry in a single package – high-voltage converters providing extremely low stand-by power, high – 800 and 900V – breakdown voltages and a range of protection features to help maximize efficiency and enhance reliability of power supplies.

In addition, we provide a comprehensive set of hardware and software evaluation and development tools as well as reference designs to enable a fast time to market.

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	Part number	Status	Description	Type	Supplier
Worldwide,Asia,Europe,Africa,North America,South America,Oceania,Afghanistan,Bahrain,Bangladesh,Bhutan,Brunei,Burma (Myanmar),Cambodia,China,East Timor,India,Indonesia,Iraq,Japan,Jordan,Kazakhstan,Kuwait,Kyrgyzstan,Laos,Malaysia,Maldives,Mongolia,Nepal,Oman,Pakistan,Philippines,Qatar,Russian Federation,Saudi Arabia,Singapore,South Korea,Sri Lanka,Taiwan,Tajikistan,Thailand,Turkmenistan,United Arab Emirates,Uzbekistan,Vietnam,Yemen,Albania,Andorra,Armenia,Austria,Azerbaijan,Belarus,Belgium,Bosnia and Herzegovina,Bulgaria,Croatia,Cyprus,Czech Republic,Denmark,Estonia,Finland,France,Georgia,Germany,Greece,Hungary,Iceland,Ireland,Israel,Italy,Latvia,Liechtenstein,Lithuania,Luxembourg,Macedonia,Malta,Moldova,Monaco,Montenegro,Netherlands,Norway,Poland,Portugal,Romania,San Marino,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,Turkey,Ukraine,United Kingdom,Vatican City,Algeria,Angola,Benin,Botswana,Burkina,Burundi,Cameroon,Cape Verde,Central African Republic,Chad,Comoros,Democratic Republic of Congo,Djibouti,Egypt,Equatorial Guinea,Eritrea,Ethiopia,Gabon,Gambia,Ghana,Guinea,Guinea-Bissau,Ivory Coast,Kenya,Lesotho,Liberia,Libya,Madagascar,Malawi,Mali,Mauritania,Mauritius,Morocco,Mozambique,Namibia,Niger,Nigeria,Rwanda,Sao Tome and Principe,Senegal,Seychelles,Sierra Leone,Somalia,South Africa,Swaziland,Tanzania,Togo,Tunisia,Uganda,Zambia,Zimbabwe,Antigua and Barbuda,Bahamas,Barbados,Belize,Canada,Costa Rica,Dominica,Dominican Republic,El Salvador,Grenada,Guatemala,Haiti,Honduras,Jamaica,Mexico,Nicaragua,Panama,Saint Kitts and Nevis,Saint Lucia,Saint Vincent and the Grenadines,Trinidad and Tobago,United States,Argentina,Bolivia,Brazil,Chile,Colombia,Ecuador,Guyana,Paraguay,Peru,Suriname,Uruguay,Venezuela,Australia,Fiji,Kiribati,Marshall Islands,Micronesia,Nauru,New Zealand,Palau,Papua New Guinea,Samoa,Solomon Islands,Tonga,Tuvalu,Vanuatu	ST Diode Finder	Active	Diode product finder application for Android and iOS	Finder Apps	ST	ST Diode Finder Description: Diode product finder application for Android and iOS
Worldwide,Asia,Europe,Africa,North America,South America,Oceania,Afghanistan,Bahrain,Bangladesh,Bhutan,Brunei,Burma (Myanmar),Cambodia,China,East Timor,India,Indonesia,Iraq,Japan,Jordan,Kazakhstan,Kuwait,Kyrgyzstan,Laos,Malaysia,Maldives,Mongolia,Nepal,Oman,Pakistan,Philippines,Qatar,Russian Federation,Saudi Arabia,Singapore,South Korea,Sri Lanka,Taiwan,Tajikistan,Thailand,Turkmenistan,United Arab Emirates,Uzbekistan,Vietnam,Yemen,Albania,Andorra,Armenia,Austria,Azerbaijan,Belarus,Belgium,Bosnia and Herzegovina,Bulgaria,Croatia,Cyprus,Czech Republic,Denmark,Estonia,Finland,France,Georgia,Germany,Greece,Hungary,Iceland,Ireland,Israel,Italy,Latvia,Liechtenstein,Lithuania,Luxembourg,Macedonia,Malta,Moldova,Monaco,Montenegro,Netherlands,Norway,Poland,Portugal,Romania,San Marino,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,Turkey,Ukraine,United Kingdom,Vatican City,Algeria,Angola,Benin,Botswana,Burkina,Burundi,Cameroon,Cape Verde,Central African Republic,Chad,Comoros,Democratic Republic of Congo,Djibouti,Egypt,Equatorial Guinea,Eritrea,Ethiopia,Gabon,Gambia,Ghana,Guinea,Guinea-Bissau,Ivory Coast,Kenya,Lesotho,Liberia,Libya,Madagascar,Malawi,Mali,Mauritania,Mauritius,Morocco,Mozambique,Namibia,Niger,Nigeria,Rwanda,Sao Tome and Principe,Senegal,Seychelles,Sierra Leone,Somalia,South Africa,Swaziland,Tanzania,Togo,Tunisia,Uganda,Zambia,Zimbabwe,Antigua and Barbuda,Bahamas,Barbados,Belize,Canada,Costa Rica,Dominica,Dominican Republic,El Salvador,Grenada,Guatemala,Haiti,Honduras,Jamaica,Mexico,Nicaragua,Panama,Saint Kitts and Nevis,Saint Lucia,Saint Vincent and the Grenadines,Trinidad and Tobago,United States,Argentina,Bolivia,Brazil,Chile,Colombia,Ecuador,Guyana,Paraguay,Peru,Suriname,Uruguay,Venezuela,Australia,Fiji,Kiribati,Marshall Islands,Micronesia,Nauru,New Zealand,Palau,Papua New Guinea,Samoa,Solomon Islands,Tonga,Tuvalu,Vanuatu	ST Voltage Regulator Finder	Active	Linear and switching voltage regulators and voltage reference applications for smartphones and tablets	Finder Apps	ST	ST Voltage Regulator Finder Description: Linear and switching voltage regulators and voltage reference applications for smartphones and tablets

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Evaluation Tools

Part Number	Description	Core product	Tool Type	Supplier	Sort by: part number
STEVAL-ISA010V1 Active	Ultra wide range dual output back converter demonstration board based on the VIPER16	-	AC-DC Converter	-	STEVAL-ISA010V1 Active Ultra wide range dual output back converter demonstration board based on the VIPER16
STEVAL-ISA071V2 Active	4 W non-insulated, wide input voltage range SMPS based on the VIPer16	-	AC-DC Converter	-	STEVAL-ISA071V2 Active 4 W non-insulated, wide input voltage range SMPS based on the VIPer16
STEVAL-ISA096V1 Active	Auxiliary power supply in buck-boost topology based on the Viper06	VIPER06	AC-DC Converter	-	STEVAL-ISA096V1 Active Auxiliary power supply in buck-boost topology based on the Viper06
STEVAL-ISA111V1 Active	Wide range single output demonstration board based on the VIPER26HN	-	AC-DC Converter	-	STEVAL-ISA111V1 Active Wide range single output demonstration board based on the VIPER26HN
STEVAL-ISA112V1 Active	Wide range non-isolated flyback demonstration board, single-output 12 V/4 W based on the VIPER06HN	-	AC-DC Converter	-	STEVAL-ISA112V1 Active Wide range non-isolated flyback demonstration board, single-output 12 V/4 W based on the VIPER06HN
STEVAL-ISA113V1 Active	Wide range single-output demonstration board based on the VIPER06HS	-	AC-DC Converter	-	STEVAL-ISA113V1 Active Wide range single-output demonstration board based on the VIPER06HS
STEVAL-ISA114V1 Active	5 V/0.8 W wide-range 30 kHz buck converter based on the VIPer06XS	-	AC-DC Converter	ST	STEVAL-ISA114V1 Active 5 V/0.8 W wide-range 30 kHz buck converter based on the VIPer06XS
STEVAL-ISA115V1 Active	12 V, 150 mA non-isolated buck converter using VIPer™ Plus - VIPER06XS	-	AC-DC Converter	ST	STEVAL-ISA115V1 Active 12 V, 150 mA non-isolated buck converter using VIPer™ Plus - VIPER06XS
STEVAL-ISA116V1 Active	5 W, 2-output wide-range buck converter based on the VIPER26LD	-	AC-DC Converter	ST	STEVAL-ISA116V1 Active 5 W, 2-output wide-range buck converter based on the VIPER26LD
STEVAL-ISA118V1 Active	Offline power converter demonstration board using the Viper16	-	AC-DC Converter	-	STEVAL-ISA118V1 Active Offline power converter demonstration board using the Viper16
STEVAL-ISA119V1 Active	1.5 W double output buck demonstration board based on the VIPER16LD	-	AC-DC Converter	-	STEVAL-ISA119V1 Active 1.5 W double output buck demonstration board based on the VIPER16LD
STEVAL-ISA129V1 Active	16 V-280 mA non isolated off-line high voltage converter based on the VIPer16H	-	AC-DC Converter	-	STEVAL-ISA129V1 Active 16 V-280 mA non isolated off-line high voltage converter based on the VIPer16H
STEVAL-ISA130V1 Active	12 V 140 mA 30 kHz non-isolated buck topology regulator based on VIPer06XN	-	AC-DC Converter	-	STEVAL-ISA130V1 Active 12 V 140 mA 30 kHz non-isolated buck topology regulator based on VIPer06XN
STEVAL-ISA174V1 Active	7 W dual output offline flyback converter for home appliances using VIPer0P	-	AC-DC Converter	ST	STEVAL-ISA174V1 Active 7 W dual output offline flyback converter for home appliances using VIPer0P
STEVAL-ISA177V1 Active	5 V, 0.85 A flyback converter using VIPer™ Plus - VIPer01	-	AC-DC Converter	ST	STEVAL-ISA177V1 Active 5 V, 0.85 A flyback converter using VIPer™ Plus - VIPer01
STEVAL-ISA178V1 Active	5 V / 200 mA high voltage buck-converter based on VIPer01	-	AC-DC Converter	ST	STEVAL-ISA178V1 Active 5 V / 200 mA high voltage buck-converter based on VIPer01
STEVAL-ISA179V1 Active	15 V, 0.15 A buck converter using VIPer™ Plus - VIPer0P	-	AC-DC Converter	ST	STEVAL-ISA179V1 Active 15 V, 0.15 A buck converter using VIPer™ Plus - VIPer0P
STEVAL-ISA192V1 Active	7 W dual output flyback converter with standby managed by capacitive touch using VIPer0P and STM32L	-	AC-DC Converter	ST	STEVAL-ISA192V1 Active 7 W dual output flyback converter with standby managed by capacitive touch using VIPer0P and STM32L
STEVAL-ISA195V1 Active	5 V / 0.36 A buck converter using VIPerPlus ? VIPer11	VIPER11	AC-DC Converter	ST	STEVAL-ISA195V1 Active 5 V / 0.36 A buck converter using VIPerPlus ? VIPer11
STEVAL-ISA196V1 Active	5 V / 1.2 A non-isolated flyback converter using VIPerPlus-VIPer114LS	-	AC-DC Converter	ST	STEVAL-ISA196V1 Active 5 V / 1.2 A non-isolated flyback converter using VIPerPlus-VIPer114LS
STEVAL-VP013B1B Active	5 V / 100 mA high voltage optimized buck-converter based on VIPer013BLS	-	PSU and Converter Solution Eval Boards	ST	STEVAL-VP013B1B Active 5 V / 100 mA high voltage optimized buck-converter based on VIPer013BLS
STEVAL-VP12201B Active	15 V/200 mA buck converter based on VIPER122	VIPER122	AC-DC Converter	ST	STEVAL-VP12201B Active 15 V/200 mA buck converter based on VIPER122
STEVAL-VP22201B Active	5 V - 360 mA buck converter based on VIPer222XSTR	-	PSU and Converter Solution Eval Boards	ST	STEVAL-VP22201B Active 5 V - 360 mA buck converter based on VIPer222XSTR
STEVAL-VP319X1B Active	5 V / 0.6 A Buck converter based on VIPER319X	-	AC-DC Converter	ST	STEVAL-VP319X1B Active 5 V / 0.6 A Buck converter based on VIPER319X

Non-Isolated Auxiliary Power Supply up to 20W

Our products and solutions

Featured Videos

All tools & software

Finder Apps

ST Diode Finder

ST Voltage Regulator Finder

All Hardware Evaluation Tools

Evaluation Tools

STEVAL-ISA010V1

STEVAL-ISA071V2

STEVAL-ISA096V1

STEVAL-ISA111V1

STEVAL-ISA112V1

STEVAL-ISA113V1

STEVAL-ISA114V1

STEVAL-ISA115V1

STEVAL-ISA116V1

STEVAL-ISA118V1

STEVAL-ISA119V1

STEVAL-ISA129V1

STEVAL-ISA130V1

STEVAL-ISA174V1

STEVAL-ISA177V1

STEVAL-ISA178V1

STEVAL-ISA179V1

STEVAL-ISA192V1

STEVAL-ISA195V1

STEVAL-ISA196V1

STEVAL-VP013B1B

STEVAL-VP12201B

STEVAL-VP22201B

STEVAL-VP319X1B