The document describes the features and characteristics of the TPS40056, including the operating input voltage range, output voltage tracking, programmable fixed-frequency voltage mode controller, etc.
The TPS40056 is a wide-input voltage range (10 V to 40 V) synchronous buck controller designed for high-efficiency power conversion. It incorporates internal gate drive outputs for both high-side N-channel MOSFETs and synchronous rectifier MOSFETs, featuring anti-cross conduction circuitry to prevent simultaneous conduction.
The device offers several programmable functions including fixed-frequency operation from 100 kHz to 1 MHz, closed-loop soft-start, and pulse-by-pulse current limit protection. It is also externally synchronizable to an external supply frequency.
| Operating Input Voltage Range | 10 V to 40 V |
|---|---|
| Quiescent Current | 3.0 mA typical |
| Oscillator Accuracy | 9V < VIN < 40V: 520 kHz to 640 kHz typical |
| Error Amplifier Open Loop Gain | 60 dB to 80 dB |
| High-Side Driver Rise Time | 48 ns typical |
The device operates with an input voltage ranging from 10 V to 40 V.
Yes, the device is externally synchronizable to an external supply frequency via the SYNC pin.
The TPS40056 is available in a 16-Pin PowerPAD™ Package (PWP).