Non-Isolated Auxiliary Power Supply up to 20W  

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.

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.

non isolated auxiliary power supply up to 2w block diagram

Part Number

Description

STEVAL-ISA118V1
Offline power converter demonstration board using the Viper16
STEVAL-ISA195V1
5 V / 0.36 A buck converter using VIPerPlus ? VIPer11
STEVAL-ISA110V1
12 V/12 W wide range non-isolated flyback based on the VIPER26LN
STEVAL-ISA115V1
12 V, 150 mA non-isolated buck converter using VIPer™ Plus - VIPER06XS
STEVAL-ISA116V1
5 W, 2-output wide-range buck converter based on the VIPER26LD
STEVAL-ISA177V1
5 V, 0.85 A flyback converter using VIPer™ Plus - VIPer01
STEVAL-ISA129V1
16 V-280 mA non isolated off-line high voltage converter based on the VIPer16H
STEVAL-ISA114V1
5 V/0.8 W wide-range 30 kHz buck converter based on the VIPer06XS
STEVAL-ISA196V1
5 V / 1.2 A non-isolated flyback converter using VIPerPlus?VIPer114LS
STEVAL-ISA112V1
Wide range non-isolated flyback demonstration board, single-output 12 V/4 W based on the VIPER06HN
STEVAL-ISA130V1
12 V 140 mA 30 kHz non-isolated buck topology regulator based on VIPer06XN
STEVAL-ISA111V1
Wide range single output demonstration board based on the VIPER26HN
STEVAL-ISA010V1
Ultra wide range dual output back converter demonstration board based on the VIPER16
STEVAL-ISA178V1
5 V / 200 mA high voltage buck-converter based on VIPer01
STEVAL-ISA179V1
15 V, 0.15 A buck converter using VIPer™ Plus - VIPer0P
STEVAL-ISA174V1
7 W dual output offline flyback converter for home appliances using VIPer0P
STEVAL-ISA071V2
4 W non-insulated, wide input voltage range SMPS based on the VIPer16
STEVAL-ISA096V1
Auxiliary power supply in buck-boost topology based on the Viper06
STEVAL-ISA192V1
7 W dual output flyback converter with standby managed by capacitive touch using VIPer0P and STM32L
STEVAL-ISA113V1
Wide range single-output demonstration board based on the VIPER06HS
STEVAL-ISA119V1
1.5 W double output buck demonstration board based on the VIPER16LD

Technical Documentation

Application Notes
Description Version Size
AN4260 AN4260: 12 V, 150 mA non-isolated buck converter using the VIPER06XS, from the VIPer™ plus family 4.2 3.5 MB
AN2811 AN2811: 3.5 W non-isolated offline constant-current LED driver based on VIPER17 1.2 1.13 MB
AN4941 AN4941: 7 W dual output (-5 V/+7 V) non-isolated flyback converter with capacitive touch sensing using VIPer0P and STM32L052 1.0 3.43 MB
AN3028 AN3028: EVLVIP16L-4WFN: 16 V / 4.5 W, 60 kHz non-isolated flyback demonstration board using the VIPer16LN 1.0 1.13 MB
AN4106 AN4106: EVLVIP26L-12WFN: 12 V/12 W, 60 kHz non-isolated flyback 1.0 3.4 MB
AN4165 AN4165: STEVAL-ISA111V1: 12 V / 12 W, 115 kHz non-isolated flyback 2.0 2.47 MB
AN4116 AN4116: STEVAL-ISA112V1: 12 V/4 W, 115 kHz non-isolated flyback 1.0 3.69 MB
AN4164 AN4164: STEVAL-ISA113V1: 12 V/4 W, 115 kHz non-isolated flyback 1.0 5.23 MB
AN4273 AN4273: STEVAL-ISA114V1: 5 V / 0.8 W 30 kHz buck with the VIPer06XS 3.0 978.71 KB
AN4562 AN4562: STEVAL-ISA116V1: 5 W, 2 output wide range buck converter based on the VIPER26LD 1.0 896.83 KB
AN4345 AN4345: STEVAL-ISA119V1: 1.5 W double output buck product evaluation board based on the VIPER16LD 1.0 2.84 MB
AN4836 AN4836: STEVAL-ISA174V1: VIPer0P 7 W double output non-isolated flyback 2.0 4.05 MB
AN4855 AN4855: STEVAL-ISA177V1 5 V/4.25 W non-isolated flyback demo with VIPer01 2.0 8.82 MB
AN4858 AN4858: STEVAL-ISA178V1 5 V/1 W 30 kHz buck demo with VIPer01 1.0 1.84 MB
AN4857 AN4857: STEVAL-ISA179V1 15 V/2.25 W 60 kHz buck demo with VIPer0P 1.0 1.61 MB
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User Manual
Description Version Size
UM1470 UM1470: STEVAL-ISA096V1 -12 V/150 mA adaptable buck-boost converter 1.0 931.46 KB
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Publications and Collaterals

Brochures
Description Version Size
Brochure Power management guide 10.2018 4.42 MB
VIPerPlus - Your SMPS design deserves a Plus 05.2018 1.08 MB
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Software Development Tools
Support & Community eDesignSuite

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