Application

• Auxiliary power supplies for automotive HVAC, climate control,

DC/DC converter, and onboard charger

• Emergency power supply for traction inverter

Description

The LinkSwitch™-TN2 family of ICs for automotive power supplies

provide significant reduction in component count compared to

traditional discrete solutions making it highly reliable. The device family

supports buck, buck-boost and flyback converter topologies. Each

device incorporates a 750 V power MOSFET, oscillator, On/Off control, a

high-voltage switched current source for self-biasing, frequency jittering,

fast (cycle-by-cycle) current limit, hysteretic thermal shutdown, and

output and overvoltage protection circuitry onto a monolithic IC.

LinkSwitch-TN2 ICs consume very little current in standby resulting in

power supply designs that meet <50 mW no-load input at 400 VDC

input. A full suite of protection features enable safe and reliable power

supplies protecting the device and the system against input and output

overvoltage faults, device over-temperature faults, lost regulation, and

power supply output overload or short-circuit faults.