TPS53219A Datasheet, PDF (1/26 Pages) Texas Instruments – Wide Input Voltage, Eco-mode™, Single Synchronous Step-Down Controller

TPS53219A
www.ti.com
SLUSAU4 – DECEMBER 2011
Wide Input Voltage, Eco-mode™, Single Synchronous Step-Down Controller
Check for Samples: TPS53219A
FEATURES
1
•2 Conversion Input Voltage Range: 3 V to 28 V
• VDD Input Voltage Range: 4.5 V to 25 V
• Output Voltage Range: 0.6 V to 5.5 V
• Wide Output Load Range: 0 A to > 20 A
• Built-In 0.6-V (±0.8%) Reference
• Built-In LDO Linear Voltage Regulator
• Auto-Skip Eco-mode™ for Light-Load
Efficiency
• D-CAP™ Mode with 100-ns Load-Step
Response
• Adaptive On-Time Control Architecture with 8
Selectable Frequency Settings
• 4700ppm/°C R_DS(on) Current Sensing
• 0.7-ms, 1.4-ms, 2.8-ms and 5.6-ms Selectable
Internal Voltage Servo Soft-Start
• Pre-Charged Start-up Capability
• Built-In Output Discharge
• Open-Drain Power Good Output
• Integrated Boost Switch
• Built-in OVP/UVP/OCP
• Thermal Shutdown (Non-latch)
• 3 mm × 3 mm QFN, 16-Pin (RGT) Package
POINT-OF-LOAD APPLICATIONS
• Storage Computer
• Server Computer
• Multi-Function Printer
• Embedded Computing
DESCRIPTION
The TPS53219A is a small-sized single buck
controller with adaptive on-time D-CAP™ mode
control. The device is suitable for low output voltage,
high current, PC system power rail and similar
point-of-load (POL) power supplies in digital
consumer products. The small package and minimal
pin-count save space on the PCB, while the
dedicated EN pin and pre-set frequency selections
simplify the power supply design. The skip-mode at
light load conditions, strong gate drivers and low-side
FET R_DS(on) current sensing supports low-loss and
high efficiency, over a broad load range. The
conversion input voltage (high-side FET drain
voltage) range is between 4.5 V and 25 V, and the
output voltage range is between 0.6 V and 5.5 V. The
TPS53219A is available in a 16-pin, QFN package
specified from –40°C to 85°C.
VREG
16 15 14 13
PGOOD NC VBST DRVH
1 TRIP
SW 12
VIN
CSD86350
SW
VIN
SW
V_OUT
V_IN
DRVL 11
EN
2 EN
TPS53219A VDRV 10
3 VFB
4 RF
VREG 9
Pad MODE VDD
GND PGND
56
7
8
TG
SW
TGR
BG
PGND
VDD
UDG-11273
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Eco-mode, D-CAP are trademarks of Texas Instruments.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011, Texas Instruments Incorporated