TPS62095 4A, High Efficiency Step Down Converter with DCS-Control™ and Low Profile Solution
1 Features
- DCS-Control™ Topology
- Pin-to-Pin Compatible with TPS62090
- Supports 1.2mm Height Total Solution
- 95% Converter Efficiency
- 20µA Operating Quiescent Current
- 2.5V to 5.5V Input Voltage Range
- Power Save Mode
- Two Level Short Circuit Protection
- 100% Duty Cycle for Lowest Dropout
- Output Discharge Function
- Adjustable Soft Startup
- Output Voltage Tracking
- 0.8V to VIN Adjustable Output Voltage
- 3mm x 3mm 16-Pin VQFN Package
2 Applications
- Notebooks, Computers
- Solid State Drives
- Hard Disk Drives
- Processor Supply
- Battery Powered Applications
3 Description
The TPS62095 device is a high frequency synchronous step down converter optimized for small solution size, high efficiency and suitable for battery powered applications. To maximize efficiency, the converter operates in PWM mode with a nominal switching frequency of 1.4MHz and automatically enters Power Save Mode operation at light load currents. When used in distributed power supplies and point of load regulation, the device allows voltage tracking to other voltage rails and tolerates output capacitors up to 150µF and beyond. Using the DCS-Control™ topology, the device achieves excellent load transient performance and accurate output voltage regulation.
The output voltage startup ramp is controlled by the soft startup pin, which allows operation as either a standalone power supply or in tracking configurations. Power sequencing is also possible by configuring the EN and PG pins. In Power Save Mode, the device operates with typically 20µA quiescent current. Power Save Mode is entered automatically and seamlessly maintaining high efficiency over the entire load current range.
Device Information(1)
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| TPS62095 | VQFN (16) | 3.00 mm × 3.00 mm |
1.8V Output Application
1.8V Output Application Efficiency
4 Revision History
Changes from * Revision (April 2014) to A Revision
- Changed status from Product Preview to Production Data - removed Product Preview banner Go
5 Pin Configuration and Functions
Pin Functions
| PIN | DESCRIPTION | |
|---|---|---|
| NAME | NO. | |
| SW | 1, 2 | Switch pin of the power stage. |
| DEF | 3 | This pin is used for internal logic and needs to be pulled high. This pin must be connected to the AVIN pin. |
| PG | 4 | Power good open drain output. A pull up resistor can not be connected to any voltage higher than the input voltage. |
| FB | 5 | Feedback pin, for regulating the output voltage. |
| AGND | 6 | Analog ground. |
| CP | 7 | Internal charge pump's flying capacitor. Connect a 10nF capacitor between CP and CN. |
| CN | 8 | Internal charge pump's flying capacitor. Connect a 10nF capacitor between CP and CN. |
| SS | 9 | Soft-start control pin. A capacitor is connected to this pin and sets the soft startup time. Leaving this pin floating sets the minimum start-up time. |
| AVIN | 10 | Analog supply input voltage pin. |
| PVIN | 11,12 | Power supply input voltage pin. |
| EN | 13 | Enable pin. This pin has an active pull down resistor of typically 400kΩ. |
| PGND | 14,15 | Power ground. |
| VOS | 16 | Output voltage sense pin. This pin must be directly connected to the output voltage. |
| Thermal Pad | The exposed thermal pad must be connected to AGND. | |