SWIFT device operates from a 4.5-V to 18-V input supply voltage, and supports output voltages as low as 0.8 V with a 90 percent power efficiency rating. The TPS54290 is set at a fixed frequency of 300 kHz. Two other family members, the TPS54291 and TPS54292, provide switching frequencies of 600 kHz and 1.2 MHz, further reducing the DC/DC solution size.
Key features and benefits of TPS54290:
· Dual output synchronous buck converter with four integrated MOSFETs provides fully synchronous conversion with 90 percent efficiency, while using 35 percent less board space compared to non-synchronous conversion solutions.
· Current mode control simplifies external compensation, giving the designer greater flexibility when choosing different types of output capacitors.
· 180º out-of-phase operation minimizes ripple current through the input capacitor. Input capacitance is reduced by up to 50 percent, which helps lessen electromagnetic interference.