The TPS54290, TPS54291, and TPS54292 devices are dual-output, fully synchronous buck converters capable of supporting applications with a minimal number of external components. It operates from a 4.5-V to 18-V input supply voltage, and supports output voltages as low as 0.8 V and as high as 90% of the input voltage.
Both high-side and low-side MOSFETs are integrated to provide fully synchronous conversion with higher efficiency. Channel 1 can provide up to 1.5 A of continuous current. Meanwhile, Channel 2 supports up to 2.5 A.
Current mode control simplifies the compensation. The external compensation adds flexibility for the user to choose different type of output capacitors.
180° out-of-phase operation reduces the ripple current through the input capacitor, providing the benefit of reducing input capacitance, alleviating EMI and increasing capacitor life.
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| Vin (min) (V) | 4.5 |
| Vin (max) (V) | 18 |
| Vout (min) (V) | 0.8 |
| Vout (max) (V) | 14 |
| Iout (max) (A) | 2.5 |
| Iq (typ) (mA) | 1.8 |
| Switching frequency (min) (kHz) | 1200 |
| Switching frequency (max) (kHz) | 1200 |
| Features | Enable, Phase Interleaving, Synchronous Rectification |
| Operating temperature range (°C) | -40 to 145 |
| Rating | Catalog |
| Regulated outputs (#) | 2 |
| Control mode | current mode |
| Duty cycle (max) (%) | 78 |
| Type | Converter |
| HTSSOP (PWP) | 16 | 32 mm² 5 x 6.4 |
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