The document introduces TPS54073, a low-input voltage, high-output current synchronous buck PWM converter. It features 8-mΩ MOSFET switches for high efficiency operation. The converter integrates all required active components, including a true high-performance voltage error amplifier, undervoltage-lockout circuit, internally/externally set slow-start circuit, and power good output.
The TPS54073 is a member of the SWIFT family of DC/DC regulators designed for low-input voltage, high-output current applications. It integrates all required active components into a thermally enhanced 28-pin TSSOP (PWP) PowerPAD package to reduce board area and total cost.
Key features include 8-mΩ MOSFET switches supporting up to 14.5A peak output current, an adjustable output voltage down to 0.9V, and a wide PWM frequency range from 280 kHz to 700 kHz (fixed or adjustable). The device includes protection mechanisms such as load protection via peak current limit and thermal shutdown.
| Input Voltage (VIN) | 3 V to 4 V |
|---|---|
| Output Current | 14 A (Peak 14.5 A) |
| Switching Frequency Range | 280 kHz to 700 kHz |
| Output Voltage Range | Down to 0.9 V |
| Operating Junction Temperature | -40°C to 125°C |
The device is available in a thermally enhanced 28-pin TSSOP (PWP) PowerPAD package.
No, it is designed to only source current during start-up for reliable power up in output precharge applications.
The recommended operating range for VIN is 3 V to 4 V, while PVIN ranges from 2.2 V to 4 V.