PowerPAD Is a trademark of Texas Instruments.
Predictive Gate Drive Is a trademark of Texas Instruments.
The TPS40040 and TPS40041 dc-to-dc controllers are designed to operate from a 2.25-V to 5.5-V input source. To reduce the number of external components, several operating parameters are fixed internally; namely, frequency, soft start time, and short circuit protection (SCP) levels. For example, the operating frequencies of TPS40040/1 are 300 kHz/600 kHz, respectively.
One of three short circuit threshold levels may be selected by the addition of an external resistor from the COMP pin to circuit ground. During power on, and before the internal soft start commands the output voltage to rise, the TPS40040/1 enters a calibration cycle, measures the current out of the COMP pin, and selects an internal SCP threshold voltage. At the end of the 1.6-ms calibration time, the output voltage is allowed to rise for a 4-ms soft start. During operation, the selected SCP threshold voltage is compared to the upper MOSFET’s voltage drop during its ON time to determine whether there is an overload condition.
The packaging of the TPS40040/1 is unique in that the PowerPAD™ is used as an electrical ground connection as well as a thermal connection.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | Low Pin Count, Low VIN (2.5V to 5.5V Synchronous Buck DC-to-DC Controller datasheet (Rev. D) | 12 Dec 2007 | |
| Selection guide | Power Management Guide 2018 (Rev. R) | 25 Jun 2018 | ||
| Selection guide | DC/DC Buck Controller Solutions Selection Guide | 06 Feb 2018 | ||
| Application note | Analysis and Design of Input Filter for DC-DC Circuit | 27 Nov 2017 | ||
| Selection guide | Control-Mode Quick Reference Guide (Rev. A) | 14 Sep 2017 | ||
| More literature | Исходные проекты ll | 13 May 2011 | ||
| EVM User's guide | Using the TPS40040-EVM-001 | 29 Jan 2007 | ||
| User guide | A 5-V Input, 1.8-V Output, 6-A Synchronous Buck Converter | 10 Apr 2006 |
For additional terms or required resources, click any title below to view the detail page where available.
The TPS40040EVM-001 evaluation module (EVM) is a synchronous buck converter providing a fixed1.8 V output at up to 10 A from a 5 V input bus. The EVM is designed to start up from a single supply, so no additional bias voltage is required for startup. The module uses the TPS40040 (...)
The TPS40041EVM-001 evaluation module (EVM) is a synchronous buck converter providing a fixed1.8 V output at up to 6 A from a 5 V input bus or 3 A from a 3.3 V input. The EVM is designed to start up from a single supply, so no additional bias voltage is required for (...)
| Package | Pins | Download |
|---|---|---|
| SON (DRB) | 8 | View options |
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