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.
Similar products you might be interested in
Technical documentation
= Top documentation for this product selected by TI
| Type | Title | Date | |
|---|---|---|---|
| * | Datasheet | TPS54040 0.5-A, 42-V Step Down DC/DC Converter with Eco-Mode™ datasheet (Rev. B) | Jan. 15, 2016 |
| Technical articles | 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 (...)
Design tools & simulation
SLIM069.ZIP (66 KB) - PSpice Model
SLIM277.ZIP (68 KB) - TINA-TI Spice Model
SLIM278.TSC (482 KB) - TINA-TI Reference Design
SLVM913.ZIP (85 KB) - PSpice Model
SLVMCU4.ZIP (1 KB) - PSpice Model
SLVMD06.ZIP (7 KB) - PSpice Model
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
SWIFTINV-CALC — The SWIFTINV-CALC Excel sheet is a complementary worksheet to the SLVA317 application note. The worksheet is used to calculate the external components needed to create a negative output voltage from a positive input voltage. The tool features several families of wide input voltage, current-mode (...)
SWIFTPOSNEG-CALC — The SWIFTPosNeg-CALC Excel sheet is a complementary worksheet to the SLVA369 application note.
This worksheet is used to calculate the external components needed to create a dual output (i.e. positive and negative) power supply using a step-down switching regulator and catalog off the shelf coupled (...)
SLVC432A.ZIP (49 KB)
Reference designs
PMP6000 — PMP6000 uses the UC9224 Digital Power controller with 2 outputs with up to 2 phases per output to drive the CSD96370Q5M synchronous buck power stages. It targets 12Vin applications with 2 outputs, each about 1 to 1.2V at up to 50A if both phases are populated. For each phase the INA213 current (...)
Design files
-
download PMP6000 BOM.pdf (69KB)
PMP7220 — This design is a buck converter for automotive as well as for non-automotive applications. It delivers an output voltage of 5.0V @ 70mA at an input voltage range of 9-14V. It can withstand input peaks up to 40V.
Design files
-
download PMP7220 BOM.pdf (15KB) -
download PMP7220.8 BOM.pdf (21KB) -
download PMP7220.8 PCB.pdf (240KB)
PMP7146 — The PMP7146 has been designed especially for E-meters with PLC (power line communication) on board. The input filter shows high impedance to the PLC transmitter and the controller LM5021 works in constant switching frequency. A settable skip-mode improves the efficiency at light load. Two Bucks and (...)
Design files
-
download PMP7146 BOM.pdf (21KB)
PMP5185 — PMP5185 is a 5V 100mA converter off a wide input range with a focus on efficiency down to 5mA loading. With the TPS54040, a 220uHy choke and a 100kHz operating frequency; a near 70% efficiency was achieved at 5mA rising to 90% at and near full load. We have newer parts with light load variable (...)
Design files
-
download PMP5185 BOM.pdf (15KB)
PMP8538 — This design is a buck converter for automotive as well as for non-automotive applications. It delivers an output voltage of 3.3V @ 0.3A at an input voltage range of 9-14V. It can withstand input peaks up to 40V.
Design files
-
download PMP8538 BOM Rev A.pdf (15KB) -
download PMP8538 BOM Rev B.pdf (15KB)
PMP5691 — Low power inverting buck boost to convert +5V to -5V
Design files
-
download PMP5691 BOM.pdf (28KB)
PMP4743 — low power inverting buck boost to generate negative output voltage -5.5V out of positive input voltage 15V
Design files
-
download PMP4743 BOM.pdf (29KB)
PMP5096
Design files
-
download PMP5096 REVA BOM.pdf (23KB) -
download PMP5096 Gerber.zip (322KB)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| HVSSOP (DGQ) | 10 | View options |
Ordering & quality
Information included:
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
TI E2E™ forums with technical support from TI engineers
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.