3.5V to 42V Input, 0.5A Step-Down Converter with Eco-Mode
Product details
Parameters
Package | Pins | Size
Features
- 3.5-V to 42-V Input Voltage Range
- 200-mΩ High-Side MOSFET
- High Efficiency at Light Loads with a Pulse
Skipping Eco-Mode™ - 116-µA Operating Quiescent Current
- 1.3-µA Shutdown Current
- 100-kHz to 2.5-MHz Switching Frequency
- Synchronizes to External Clock
- Adjustable Slow Start/Sequencing
- UV and OV Power Good Output
- Adjustable UVLO Voltage and Hysteresis
- 0.8-V Internal Voltage Reference
- MSOP10 Package With PowerPAD™
- Supported by SwitcherPro Software Tool
(http://focus.ti.com/docs/toolsw/folders/print/switcherpro.html)
Description
The TPS54040 device is a 42-V, 0.5-A, step down regulator with an integrated high side MOSFET. Current mode control provides simple external compensation and flexible component selection. A low ripple pulse skip mode reduces the no load, regulated output supply current to 116 µA. Using the enable pin, shutdown supply current is reduced to 1.3 µA, when the enable pin is low.
Under voltage lockout is internally set at 2.5 V, but can be increased using the enable pin. The output voltage startup ramp is controlled by the slow start pin that can also be configured for sequencing/tracking. An open drain power good signal indicates the output is within 93% to 107% of its nominal voltage.
A wide switching frequency range allows efficiency and external component size to be optimized. Frequency fold back and thermal shutdown protects the part during an overload condition.
The TPS54040 is available in 10-pin thermally enhanced HVSSOP PowerPAD package.
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Technical documentation
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View all 10 | Type | Title | Date | |
|---|---|---|---|
| * | Data sheet | TPS54040 0.5-A, 42-V Step Down DC/DC Converter with Eco-Mode™ datasheet (Rev. B) | Jan. 15, 2016 |
| Technical article | Minimize the impact of the MLCC shortage on your power application | Mar. 29, 2019 | |
| Application note | Understanding Eco-mode(TM) Operation | Dec. 05, 2016 | |
| Application note | Design Considerations for DC-DC Converters in Fast-Input Slew Rate Applications | Mar. 05, 2015 | |
| Application note | Differences between the TPS54x40, TPS54x60 and the TPS54x40A, TPS54x60A | Apr. 17, 2013 | |
| Application note | Create an Inverting Power Supply from a Step-Down Regulator (Rev. B) | Oct. 26, 2012 | |
| Application note | Level Shifting Control for an Inverting Buck-boost | Oct. 10, 2012 | |
| White paper | Power Management Solutions for Ultra-Low-Power 16-Bit MSP430 MCUs (Rev. D) | Mar. 28, 2012 | |
| User guide | PMP5691 Test Results | Nov. 21, 2011 | |
| User guide | TPS54040EVM-456 0.5-A, SWIFT™ Regulator Evaluation Module | Mar. 20, 2009 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
TPS54040EVM-456
Description
The TPS54040EVM-456 evaluation module is designed to demonstrate the small printed-circuit-board areas that can be achieved when designing with the TPS54040 regulator. The TPS54040 dc/dc converter is designed to provide up to a 0.5-A output from an input voltage source of 3.5 V to 42 V. Rated input (...)
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Reference designs
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CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| HVSSOP (DGQ) | 10 | View options |
Ordering & quality
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