TPS40041
Synchroner Abwärtsregler, 2,25 bis 5,5 V Eingangsspannung, 600 kHz, mit geringer Pin-Anzahl
TPS40041
- 2.25-V to 5.5-V Input
- Output Voltage from 0.6 V to 90% of VIN
- High-Side Drive for N-Channel FET
- Supports Pre-Biased Outputs
- Adaptive Anti-Cross Conduction Gate Drive
- 1%, 0.6-V Reference
- Two Fixed Switching Frequency Versions, TPS40040 (300 kHz) and TPS40041 (600 kHz)
- Three Selectable Short Circuit Protection Levels of 105 mV, 180 mV and 310 mV
- Hiccup Restart from Faults
- Voltage Mode Control
- Active Low Enable
- Thermal Shutdown Protection at 145°C
- 8-Pin, 3-mm × 3-mm SON with Ground Connection to Thermal Pad
- APPLICATIONS
- Point of Load
- Telecommunications
- DC to DC Modules
- Set Top Boxes
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 MOSFETs 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.
Technische Dokumentation
Typ | Titel | Datum | ||
---|---|---|---|---|
* | Data sheet | Low Pin Count, Low VIN (2.5V to 5.5V Synchronous Buck DC-to-DC Controller datasheet (Rev. D) | 12 Dez 2007 | |
Selection guide | Power Management Guide 2018 (Rev. R) | 25 Jun 2018 | ||
Selection guide | DC/DC Buck Controller Solutions Selection Guide | 06 Feb 2018 | ||
Technical article | Power Tips: Simple PSRR measurement with a frequency analyzer | PDF | HTML | 25 Mai 2016 | |
Application note | Power for V5’s Transceiver using DC/DC Controllers using External FETs | 04 Sep 2007 | ||
User guide | A 5-V Input, 1.8-V Output, 6-A Synchronous Buck Converter | 10 Apr 2006 |
Design und Entwicklung
Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.
TPS40040EVM-001 — 5 V-Eingang, 1,8 V-Ausgang, 10 A, Synchron-Abwärtswandler – Evaluierungsmodul
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 (...)
TPS40041EVM-001 — TPS40041 5 V-Eingang, 1,8 V-Ausgang, 6 A – Evaluierungsmodul
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 (...)
TPS40040/1 Unencrypted PSpice Average Model Package (Rev. A)
TPS40041 TINA-TI Average Reference Design
TPS40041 TINA-TI Transient Reference Design
Gehäuse | Pins | CAD-Symbole, Footprints und 3D-Modelle |
---|---|---|
VSON (DRB) | 8 | Ultra Librarian |
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