Step Down Converter with Bypass Mode for Ultra Low Power Wireless Applications
Product details
Parameters
Package | Pins | Size
Features
- Input Voltage Range VIN From 1.9 V to 3.9 V
- Typ. 30-nA Ultra Low-Power Bypass Mode
- Typ. 25-µA DC-DC Quiescent Current
- Internal Feedback Divider Disconnect
- Typical 2.1-Ω: Bypass Switch Between VIN and VOUT
- Automatic Transition from DC-DC to Bypass Mode
- Up to 3-MHz Switch Frequency
- Up to 95% DC-DC Efficiency
- Open-Drain Status Output STAT
- Output Peak Current up to 100 mA
- Fixed Output Voltages 1.9 V, 2.05 V, 2.1 V, 2.3 V
- Small External Output Filter Components 2.2 µH and 2.2 µF
- Optimized For Low Output Ripple Voltage
- Small 1 × 1.5 × 0.6-mm3 USON Package
- 12-mm2 Minimum Solution Size
Description
The TPS62730 is a high frequency synchronous step-down DC-DC converter optimized for ultra low-power wireless applications. The device is optimized to supply TIs Low-Power Wireless sub 1-GHz and 2.4-GHz RF transceivers and System-On-Chip (SoC) solutions. The TPS62730 reduces the current consumption drawn from the battery during TX and RX mode by a high efficient step-down voltage conversion. The device provides an output current of up to 100 mA and allows the use of tiny and low-cost chip inductors and capacitors. With an input voltage range of 1.9 V to 3.9 V, the device supports Li-primary battery chemistries such as Li-SOCl2, Li-SO2, Li-MnO2, and also two cell alkaline batteries.
The TPS62730 features an Ultra Low-Power bypass mode with typical 30-nA current consumption to support sleep and low power modes of TIs CC2540 Bluetooth Low Energy and CC430 SoC solutions. In this bypass mode, the output capacitor of the DC-DC converter is connected through an integrated typical 2.1-Ω bypass switch to the battery.
In DC-DC operation mode the device provides a fixed output voltage to the system. With a switch frequency up to 3 MHz, the TPS62730 features low output ripple voltage and low noise even with a small 2.2-µF output capacitor. The automatic transition into bypass mode during DC-DC operation prevents an increase of output ripple voltage and noise once the DC-DC converter operates close to 100% duty cycle. The device automatically enters bypass mode once the battery voltage falls below the transition threshold VIT BYP . The TPS62730 is available in a 1 × 1.5-mm2 6-pin USON package.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Stepdown Converters With Bypass Mode for Ultralow-Power Wireless Applications, Evaluation Module/Board
The TPS62730EVM-726 evaluation module (EVM) helps designers evaluate the operation and performance of the TPS62730 step-down converter. The user’s guide describes the TPS62730 evaluation (...)
Features
- Input Voltage Range V IN from 1.9V to 3.9V
- Typ. 30nA Ultra Low Power Bypass Mode
- Typ. 25 µA DC/DC Quiescent Current
- Internal Feedback Divider Disconnect
- Typ. 2.5Ω Bypass Switch between V IN and VOUT
- Automatic Transition from DC/DC to Bypass Mode
- Up To 3MHz switch frequency
- Up to 95% DC/DC Efficiency
- Open (...)
Software development
Design tools & simulation
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
- (...)
Reference designs
Design files
Design files
Design files
-
download Smart Grid wM-Bus RF Subsystem at 169-MHz Gerber Files.zip (109KB) -
download Smart Grid wM-Bus RF Subsystem at 169-MHz Bill of Materials (BOM).pdf (97KB) -
download Smart Grid wM-Bus RF Subsystem at 169-MHz Assembly Drawings.pdf (58KB) -
download Smart Grid wM-Bus RF Subsystem at 169-MHz CAD Files.zip (105KB) -
download Smart Grid wM-Bus RF Subsystem at 169-MHz Layer Plots.pdf (255KB)
Design files
With a (...)
Design files
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
SON (DRY) | 6 | View options |
Ordering & quality
- 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.