Texas Instruments TPSM82902 Buck Converter
Texas Instruments TPSM82902 Buck Converter is a highly efficient, small, easy-to-use, and flexible synchronous step-down DC-DC converter in a MicroSiP package. The TPSM82902 offers a selectable switching frequency of 2.5MHz or 1.0MHz, allowing the use of small components and fast transient response.
With the DCS-Control topology, the TI TPSM82902 buck converter supports high VOUT accuracy of ±1%. The device's wide input voltage range of 3V to 17V enables a variety of nominal inputs, like 12V supply rails, single-cell or multi-cell Li-Ion, and 5V or 3.3V rails. The TPSM82902 automatically enters power save mode (if auto PFM/PWM is selected) at light loads to maintain high efficiency. Additionally, to supply high efficiency at tiny loads, the device has a low typical quiescent current of 4µA. AEE, if enabled, delivers high efficiency across VIN, VOUT, and load current. The TPSM82902 includes a MODE/Smart-CONF input to set the internal/external divider, switching frequency, output voltage discharge, and automatic power save mode or forced PWM operation.
The TPSM82902 is housed in a small 11-pin MicroSiP package measuring 3.0mm x 2.8mm x 1.6mm with an integrated 1μH inductor.
Features
- High efficiency for wide duty cycle and load range
- IQ of 4µA typical
- 62mΩ high-side and 22mΩ low-side RDS(ON)
- 3mm x 2.8mm x 1.6mm MicroSiP™ package
- Up to 2A continuous output current
- ±0.9% feedback voltage accuracy across temp (–40°C to 125°C)
- Configurable output voltage options:
- VFB external divider of 0.6V to 5.5V
- VSET internal divider with 16 options between 0.4V and 5.5V
- DCS-Control topology with 100% mode
- Create a custom design using the TPSM82902 using the WEBENCH® power designer
- Flexibility through MODE/S-CONF pin
- 2.5MHz or 1.0MHz switching frequency
- Forced PWM or auto (PFM) power save mode with dynamic mode change option
- Automatic efficiency enhancement (AEE)
- Output discharge on/off
- Highly flexible and easy to use
- Optimized pinout for single-layer routing
- Precise enable input
- Power-good output
- Adjustable soft start and tracking
- No external bootstrap capacitor required
Applications
- Data center and enterprise computing
- Wired networking
- Wireless infrastructure
- Factory automation and control
- Test and measurement
Associated Products
Texas Instruments TPSM82901 Synchronous Buck Converter Power Module
A highly efficient, small, and flexible synchronous step-down DC-DC converter in a MicroSiP package.
Texas Instruments TPSM82903 Buck Converter
High efficiency and flexibility in a small MicroSiP package size that is easy to use.
Related Evaluation Module
Texas Instruments TPSM82902EVM Evaluation Module
Designed to evaluate the 2A TPSM82902 step-down buck converter with an integrated inductor.
Simplified Schematic
Efficiency Versus Output Current
