The TPS4005x is a family of high-voltage,
wide-input (8 V to 40 V), synchronous, step-down controllers. The TPS4005x family
offers design flexibility with a variety of user-programmable functions, including
soft start, UVLO, operating frequency, voltage feedforward, high-side current limit,
and loop compensation.The TPS4005x uses voltage feedforward control
techniques to provide good line regulation over the wide (4:1) input voltage range,
and fast response to input line transients. Near-constant modulator gain with input
variation eases loop compensation. The externally programmable current limit
provides pulse-by-pulse current limit, as well as hiccup mode operation using an
internal fault counter for longer duration overloads.The new products, LM5145 and LM5146,
offer reduced BOM cost, higher efficiency, and reduced solution size among many
other features. Start a WEBENCH design with
LM5145 and LM5146.
