TPS53219 Datasheet, PDF (1/26 Pages) Texas Instruments – Wide Input Voltage, Eco-mode™, Single Synchronous Step-Down Controller

TPS53219
www.ti.com
SLUSAA8 – NOVEMBER 2010
Wide Input Voltage, Eco-mode™, Single Synchronous Step-Down Controller
Check for Samples: TPS53219
FEATURES
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•2 Wide Input Voltage Range: 4.5 V to 28 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 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
• Power Good Output
• Integrated Boost Switch
• Built-in OVP/UVP/OCP
• Thermal Shutdown (Non-latch)
• 3 mm × 3mm QFN, 16-Pin (RGT) Package
VREG
16 15 14 13
PGOOD NC VBST DRVH
1 TRIP
SW 12
DRVL 11
2 EN
EN
TPS53219
VDRV 10
3 VFB
4 RF
VREG 9
MODE VDD
GND PGND
56
7
8
APPLICATIONS
• Point-of-Load Systems
– Storage Computer
– Server Computer
– Multi-Function Printer
– Embedded Computing
DESCRIPTION
The TPS53219 is 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 3 V and 28 V,
and the output voltage range is between 0.6 V and
5.5 V. The TPS53219 is available in a 16-pin, QFN
package specified from –40°C to 85°C.
VIN
CSD86350
SW
VIN
SW
TG
SW
TGR
BG
PGND
V
OUT
V_IN
VDD
UDG-10100
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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 © 2010, Texas Instruments Incorporated