The TPS5430-Q1 is a high output current PWM converter that integrates a low-resistance
high side N-channel MOSFET. Included on the substrate with the listed features are a
high-performance voltage error amplifier that provides tight voltage regulation accuracy under
transient conditions, an undervoltage lockout (UVLO) circuit to prevent start-up until the input
voltage reaches 5.5 V, an internally set slow-start circuit to limit inrush currents, and a voltage
feed-forward circuit to improve the transient response. Using the enable (ENA) pin, shutdown supply
current is reduced to 18 µA typically. Other features include an active-high enable, overcurrent
limiting, overvoltage protection (OVP), and thermal shutdown. To reduce design complexity and
external component count, the TPS5430-Q1 feedback loop is internally compensated. The TPS5430-Q1
regulates a wide variety of power sources including 24-V buses.
The TPS5430-Q1 device is available in a thermally enhanced, easy-to-use 8-pin SOIC
PowerPAD™ package. TI provides evaluation modules and the WEBENCH®
software tool to aid in quickly achieving high-performance power supply designs to meet aggressive
equipment development cycles.
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