STMicroelectronics STEVAL-ISA174V1

Description

The STEVAL-ISA132V1 evaluation board implements a converter capable of delivering 170 W of continuous power (VIN = 190 VAC to 264 VAC, VOUT = 24 V) and more than 300 W peak power for a limited time. The architecture of the board is based on a single-stage LLC resonant converter without PFC using the new L6699 resonant controller. The L6699 integrates some very innovative functions such as self-adjusting adaptive dead-time, anti-capacitive mode protection and proprietary “safe-start” procedure preventing hard switching at startup.

Features

● Input mains range: 190 to 264 VAC - frequency 50 Hz
● Output voltage: 24 V 5%
● No-load consumption: < 0.6 W
● Efficiency @ 230 VAC > 92%
● EMI: within EN55022 Class-B limits conducted pre-compliance
● Safety: meets EN60950-1
● Dimensions: 90 x 90 mm, 50 mm component maximum height
● Safe startup procedure to avoid hard switching
● Hard switching prevention in overload condition and low load condition
● Burst mode in low load condition with smooth restart to prevent audible noise
● Evaluation board can deliver more than 300 W peak power for a limited time by a thermal protection NTC positioned near output diodes
● Continuous power at 30 °C ambient temperature:170 W
● The power MOSFETs and diodes are both in D²PAK packages
● RoHS compliant