TPS65258 features: high-span input supply voltage range: 4.5V-16V; external soft-start pin; current mode control with simple compensation circuit; forced PWM mode
Typical application range of TPS65258: STB/DVR/streaming
TPS65258 Reference Design Application Circuit:
Figure 1 TPS65258 internal structure diagram
TPS65258is a power management IC with three step-down buck converters. Both high-side and low-side MOSFETs are integrated to provide fully synchronous conversion with higher efficiency. The converters are designed to simplify its application while giving the designer the option to optimize their Usage according to the target application.
Figure 2 TPS65258 reference design
TPS65258features a supervisor circuit which monitors each buck's output and the PGOOD pin is asserted once sequencing is done. The PGOOD pin is pulled low when any buck converter is pulled below 85% of the nominal output voltage. The PGOOD is pulled up when all converter outputs are more than 90% of its nominal output voltage. The default reset time is 100 ms. The polarity of the PGOOD is active high.
TPS65258 Datasheet: Click to download
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