Automotive high-side driver handles 100A

ST VN9004AJ automotive hig side driver

ST’s providing are, like Rohm’s, for automotive use.

They’re single, double and quad high-side gate drivers in a standard 6 x 4.9 x 1.7mm gull-wing thermal pad bundle, “with pin assignments that simplify scaling circuit designs so as to add extra driver channels”, in keeping with ST. “Assembly the automotive trade’s LV124 take a look at schedule for deep chilly cranking permits use with heavy masses corresponding to engine starters and ensures dependable operation even in excessive winter situations.”

  • Single channel: VN9004AJ, VN9006AJ, VN9008AJ, VN9012AJ, VN9016AJ
  • Twin-channel: VND9008AJ, VND9012AJ, VND9016AJ, VND9025AJ
  • Quad-channel VNQ9025AJ and VNQ9080AJ

Inputs are suitable with indicators from 3 and 5V CMOS.

Taking the single-channel VN9004AJ (diagram) for instance, it’s designed to work throughout 4 to 28V however will face up to provide transients to 36V because of the in-house VIPower M0-9 course of, mentioned ST.

Typical on-state resistance for its single channel is 4.2mΩ, permitting it to deal with as much as a 108A restrict. Standby present is 500nA, permitting it to stay completely linked to the automobile battery.

Protections embrace: under-voltage shut-down, over-voltage clamp, load present limiting, over-load blocking by on-die thermal gradient sensing, output inductive damaging transient clamping and mechanisms to deal with  floor loss and Vcc loss.

There may be additionally a configurable latch-off on over-temperature or energy limitation, with devoted fault reset pin, in addition to a scheme utilizing exterior parts to implement reverse battery connection safety.

“Versatile reset administration lets the designer configure responses to faults,” mentioned ST. “The drivers present reverse-battery safety via self-turn-on functionality, which limits the ability dissipation on the PCB to a survivable stage.”

To inform the host controller, suggestions is multiplexed onto a pin. This contains: a present proportional to load present, then indication for: over-load, short-to-ground, thermal shut-down, off-state open-load (wants exterior pull-up) and output quick to Vcc.

There’s a lot happening with these ICs – check with the information sheets for particulars.

For example, the single-channel VN9004AJ could be discovered on this webpage and its information sheet will obtain from ST should you click on right here


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