CIE Components in Electronics
Texas Instruments (TI) has introduced six new AEC-Q100-qualified gate drivers with what it says are the industry’s fastest propagation delays of less than 15 nanoseconds. According to TI the new UCC275xx-Q1 family of single- and dual-channel gate drivers will provide improved power efficiency, reliability and flexibility compared to existing solutions for automotive applications.
In terms of automotive applications these devices are suitable for use in the powertrain, bi-directional converters (12- to 48-V and 12- to 400-V input), onboard charging, traction inverters, advanced driver assistance systems (ADAS), safety, headlamps and instrumentation clusters.
Demanding requirements to improve fuel efficiency mean automotive systems must shrink in size, lowering the overall weight of the vehicle. The ultra-low propagation delays in the UCC275xx-Q1 family help automotive systems efficiently switch power electronics at high frequencies to maintain a small footprint and reduce overall vehicle weight.
Key features and benefits of the UCC275xx-Q1 gate drivers:
- An integrated solution that saves both space and enables higher efficiency: peak currents ranging from 2.5 A to 5 A and propagation delays of less than 15 ns, TI’s automotive output-stage drivers can replace discrete totem pole solutions. This cuts down board space, reduces system cost and enables the gate drivers to be placed closer to the switch, which cuts down parasitic inductances and improves efficiency.
- Operates in a wide temperature range of -40 to 140 degrees Celsius and negative input voltage of -5 V enables handling of ground bouncing experienced in harsh environments.
- It provides for improved design flexibility that is able to support a wider input voltage range. It supports 4.5 V to 35 V to drive wide bandgap switches, such as SiC, MOSFETs and IGBTs that are capable of withstanding high temperatures without compromising efficiency. Additionally, the inverting functions of the UCC27518A-Q1 and UCC27519A-Q1, and non-inverting functions of the UCC27531-Q1, UCC27517A-Q1, UCC27519A-Q1 and UCC27524A-Q1 add the flexibility needed to handle different types of inputs.
