The TPS4005x is a family of high-voltage, wide input (8 V to 40 V), synchronous, step-down converters. The TPS4005x family offers design flexibility with a variety of user programmable functions, including soft-start, UVLO, operating frequency, voltage feedforward, high-side current limit, and loop compensation.
The TPS4005x are also synchronizable to an external supply. They incorporate MOSFET gate drivers for external N-channel high-side and synchronous rectifier (SR) MOSFETs. Gate drive logic incorporates anti-cross conduction circuitry to prevent simultaneous high-side and synchronous rectifier conduction.
The TPS4005x uses voltage feed-forward control techniques to provide good line regulation over the wide (4:1) input voltage range, and fast response to input line transients with near constant gain with input variation which eases loop compensation.
The externally programmable current limit provides pulse-by-pulse current limit, as well as hiccup mode operation utilizing an internal fault counter for longer duration overloads.
PowerPAD is trademark of Texas Instruments.
| Vin (min) (V) | 8 |
| Vin (max) (V) | 40 |
| Vout (min) (V) | 0.7 |
| Vout (max) (V) | 35 |
| Iout (max) (A) | 20 |
| Iq (typ) (mA) | 1.5 |
| Switching frequency (min) (kHz) | 100 |
| Switching frequency (max) (kHz) | 1000 |
| Features | Enable, Frequency synchronization, Synchronous Rectification |
| Operating temperature range (°C) | -40 to 125 |
| Regulated outputs (#) | 1 |
| Number of phases | 1 |
| Rating | Automotive |
| Control mode | Voltage mode |
| Type | Controller |
| HTSSOP (PWP) | 16 | 32 mm² 5 x 6.4 |
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