elleny

12V, 15W (peak 20W) isolated flyback converter based on VIPER38LE

STEVAL-ISA153V1

Overview

The STEVAL-ISA153V1 product evaluation board implements a 12 V/1.25 A, 15 W (20 W peak) isolated flyback wide-range mains developed for general-purpose applications.

The core of the application is the VIPER38LE, the latest offline converter from the VIPerPlus family. The device is a high-voltage converter that smartly integrates an 800 V rugged power MOSFET with PWM current-mode control. The device features an adjustable extra power timer (EPT) that enables the IC to sustain overload conditions for a few seconds.
The main characteristics of the evaluation board are its small size and minimal BOM, high efficiency and low standby consumption. Extremely low consumption under no-load conditions is ensured thanks to burst mode operation which reduces the average switching frequency and minimizes all frequency-related losses.
The VIPER38LE operates at a fixed 60 kHz frequency. Frequency jittering is implemented, which helps the application meet electromagnetic disturbance standards.
The IC includes high-level protection features such as dual-level OCP, output overvoltage, short-circuit, and thermal shutdown with hysteresis. After removal of a fault condition, the IC is automatically restarted.

Main features

Universal input mains range: 90 – 265 V_ACfrequency: 50 - 60 Hz
Output voltage/current: 12 V/1.25 A (1.65 A peak)
Very compact size
Standby mains consumption: lower than 30 mW at 230 V_AC
Minimum active mode efficiency: 81.55%
Minimum active mode at 10% load efficiency: 71.55%
EMI: in accordance with EN55022-Class-B
RoHS compliant

Design Files

All reference designs on this site are sourced from major semiconductor manufacturers or collected online for learning and research. The copyright belongs to the semiconductor manufacturer or the original author. If you believe that the reference design of this site infringes upon your relevant rights and interests, please send us a rights notice. As a neutral platform service provider, we will take measures to delete the relevant content in accordance with relevant laws after receiving the relevant notice from the rights holder. Please send relevant notifications to email: bbs_service@eeworld.com.cn.

It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

Hot

Technical Resources More

Search Datasheet?

Supported by EEWorld Datasheet

Technical Videos More

Forum More

Update:2025-05-08 10:04:06

First Aid!!!!!!!!!!!! Programming a Taxi Meter in VHDL
Programming a taxi meter in VHDL language. Requirements: Charge by mileage. Starting price 8.00 yuan (including 3 kilometers), 1.80 yuan/km within 5 kilometers, 2.20 yuan/km after 5 kilometers, 0.9 yu
Maple's gerber/pcb files and bootloader
Automatic focusing system based on DSP chip TMS320F206 for numerical calculation and implementation control
Modern society is a highly information-based society. The development of multimedia technology has attracted much attention to the acquisition and transmission of image information. Autofocus technolo
Newbie posting for help! Experts, please help me with dsp bios issues
The program configures CLK to run every 100ms and starts the SWI thread. Then prints out the information. The code is as follows. #include "test_c55xcfg.h"unsigned int Times_swi;void main ( void ){Tim
About the Interconnection of Two Network Interface Chips with MAC Layer
I would like to ask, can two ARM chips with MAC layer interface be directly interconnected instead of using external PHY?Is there any reference circuit?
Can't access PIO0_1 interrupt?
Here is the procedure: #include "..\config.h" #define LED (1ul2)#define LED_INIT() GPIO2DIR |= LED /* */#define LEDOFF() GPIO2DATA |= LED /* */#define LEDON() GPIO2DATA = ~LED /* */#define KEY (1ul1)v

Datasheet More

Circuits More