Avago optocouplers target automotive applications

Optimized for use in onboard chargers and other high-voltage systems in hybrid and electric vehicles, Avago's ACPL-K4xT optocouplers are qualified to AEC-Q100 Grade 1 stress test requirements for automotive applications.

The devices offer working voltage performance up to 1140V, allowing standardization of battery management solutions for mid-voltage car batteries, high-voltage bus and truck batteries, and even future high voltage battery topologies. Onboard chargers take in high-voltage, high-current supply to charge quickly, requiring isolation of up to 8kV peak transients. The reinforced insulation of the optocouplers meets these requirements, delivering safe electrical signal isolation over a wide operating temperature range from -40 to +125° C. The devices’ small surface-mount package meets the 8mm creepage and clearance distance required for high-voltage safety regulations.

The ACPL-K4xT optocouplers' low-power consumption helps prevent battery management systems from draining vehicle batteries. The devices feature no quiescent current and thus do not draw power in the "off" state. Also, the current consumption of both their LED and detector IC can be minimized as low as 1.5mA/channel for low-speed switching operation.

The ACPL-K4xT optocouplers are compliant to multiple safety standards, including UL 1577 at 5kVRMS/1 minute, IEC 60747-5-5 with an 8kVpeak transient rating for up to 1140V working voltage, EN/DIN EN 60747-5-2 and CSA. The single-channel ACPL-K43T device and dual-channel ACPL-K44T device each operate at 1 MBd, while the single-channel ACPL-K49T device operates at 20 kBd.  

Key highlights:

• High Temperature and Reliability IPM Driver for Automotive Application
• Ultra Low Drive for status feedback at IF = 0.8mA or 1.5mA
• 30 kV/µs High Common-Mode Rejection at VCM = 1500 V (typ)
• Compact, Auto-Insertable Stretched SO8 Packages
• 8mm Creepage and Clearance
• Wide Temperature Range: -40°C to +125°C
• High Speed: 1MBd
• Low Propagation Delay: 1µs max at IF = 10mA
• Qualified according to AEC-Q100 Test Guidelines
• Worldwide Safety Approval

Pricing: In 1,000-piece quantities, the ACPL-K43T is priced at $2.23; the ACPL-K44T at $2.97; and the ACPL-K49T at $1.55.

Datasheet:  Click here.