Rohm Semiconductor has released a new family of four AEC-Q100-qualified high-side switches targeting the automotive market. Available in both 1- and 2-channel variants with RDS(on) ratings of 45 mΩ, 70m Ω and 90 mΩ, these intelligent power devices incorporate multiple protection functions. These range from overcurrent protection (OCP) and thermal shutdown (TSD) to open load detection (OLD) and under voltage lockout (UVLO), as well as a diagnostic output function (ST) for error detection.
Key features:
- AEC-Q100 qualified (Grade 1)
- Built-in variable overcurrent limit function
- Built-in variable overcurrent mask time setting function.
- Built-in Open load detection function.
- Built-in under voltage lockout (UVLO)
- Built-in diagnostic output
- Monolithic power management IC with control unit (CMOS) and power MOSFET on a single chip
- Low voltage operation (VBB = 4.3 V)
“These smart IPDs [intelligent power devices] allow users to develop optimized solutions for resistive, inductive and capacitive loads in automotive applications, such as automotive ECUs [electronic control units] and vehicle cabin climate control,” said Nobuyuki Ikuta, senior solutions marketing manager at Rohm USA, in a statement.
Featuring user-definable protection, the 70-mΩ BV2HD070EFU-C and 45-mΩ BV2HD045EFU-C/BV2HC045EFU-C 2-channel high-side switch ICs feature variable OCD and OCD mask functions that allow users to set limits for the overcurrent threshold and time to achieve the optimum overcurrent protection for a given load said Rohm.
The high-side switches also integrate built-in double error flags enabling designers to distinguish between two different fault types for each channel output.
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