STMicroelectronics STEVAL-A6986IV1 Iso-Buck Converter Eval Board

STMicroelectronics STEVAL-A6986IV1 Iso-Buck Converter Evaluation Board is configured to evaluate the operation of the A6986I automotive 38V, 5W synchronous iso-buck converter for isolated applications. The STEVAL-A6986IV1 Board’s primary output voltage can be accurately adjusted, whereas a transformer generates the isolated secondary output. No optocoupler is required. The primary sink capability (Typ. 1.9A) allows a proper energy transfer to the secondary side and enables a tracked soft-start of the secondary output.

The STM STEVAL-A6986IV1 Iso-Buck Converter Evaluation Board generates two isolated voltages (positive around 18V and negative between 4V and 5V), especially suitable for supplying IGBT/SiC MOSFET gate driver. A simple bypass enables the supply of a single isolated voltage.

Features

AEC-Q100 qualified
-40°C to 135°C for T_j operating temperature range
Designed for iso-buck topology
4V to 38V operating input voltage
Primary output voltage regulation
No optocoupler required
1.9A typical sink peak primary current capability
Peak current mode architecture in forced PWM operation

300ns blanking time
8µA IQ-SHTDWN
Adjustable fSW and synchronization
Embedded primary output voltage supervisor
Adjustable soft-start time
Internal primary current limiting
Overvoltage protection
R_{DS(on) HS} = 180mΩ, R_{DS(on) LS} = 150mΩ
Thermal shutdown

STMicroelectronics STEVAL-A6986IV1 Iso-Buck Converter Eval Board

Features

Schematic

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