Features: ` 15-m MOSFET Switches for High Efficiency at 9-A Continuous Output
` 0.9-V to 2.5-V Adjustable Output Voltage
` Externally Compensated With 1% Accuracy
` Fast Transient Response
` Wide PWM Frequency: Fixed 350 kHz, 550 kHz or Adjustable 280 kHz to 700 kHz
` Load Protected by Peak Current Limit and Thermal Shutdown
` Integrated Solution Reduces Board Area and Total Cost
Application· Low-Voltage, High-Density Systems With Power Distributed at 3.3 V
· Point of Load Regulation for High Performance DSPs, FPGAs, ASICs and Microprocessors
· Broadband, Networking and Optical Communications Infrastructure
· Portable Computing/Notebook PCs
Pinout
Specifications
| |
TPS54910 |
UNIT |
| Input voltage range,VI |
SS/ENA, SYNC |
0.3 to 7 |
V |
| RT |
0.3 to 6 |
| VSENSE |
0.3 to 4 |
| PVIN, VIN |
0.3 to 4.5 |
| BOOT |
0.3 to 10 |
| Output voltage range,VO |
VBIAS, COMP, PWRGD |
0.3 to 7 |
V |
| PH |
0.6 to 6 |
| Source current,VO |
PH |
Internally limited |
| COMP, VBIAS |
6 |
mA |
| Sink current,IS |
PH |
25 |
A |
| COMP |
6 |
| SS/ENA, PWRGD |
10 |
mA |
| Voltage differential |
AGND to PGND |
±0.3 |
V |
| Operating junction temperature range,TJ |
40 to 125 |
|
| Storage temperature range,Tstg |
65 to 150 |
|
| Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds |
300 |
|
(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
DescriptionAs a member of the SWIFTTM family of dc/dc regulators, the TPS54910 low-input voltage high-output current synchronous buck PWM converter integrates all required active components. Included on the substrate with the listed features are a true, high performance, voltage error amplifier that enables maximum performance under transient conditions and flexibility in choosing the output filter L and C components; an under-voltage-lockout circuit to prevent start-up until the input voltage reaches 3 V; an internally and externally set slow-start circuit to limit in-rush currents; and a power good output useful for processor/logic reset, fault signaling, and supply sequencing.
The TPS54910 is available in a thermally enhanced 28-pin TSSOP (PWP) PowerPADTM package, which eliminates bulky heatsinks. TI TPS54910 provides evaluation modules and the SWIFTTM designer software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment development cycles.
TPS54910 Data Sheet
