TPS62480 Datasheet, PDF (1/36 Pages) Texas Instruments – 2-Phase Step-Down Converter

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TPS62480
SLVSCL9A – FEBRUARY 2016 – REVISED FEBRUARY 2016
TPS62480 2.4-V to 5.5-V, 6-A, 2-Phase Step-Down Converter
1 Features
•1 Dual Phase Current Mode Topology
• Input Voltage Range 2.4 to 5.5 V
• Output Voltage Range 0.6 to 5.5 V
• Output Current of 6 A
• Typical Quiescent Current of 23 µA
• Feedback Voltage Accuracy of ±1% (PWM Mode)
• Output Voltage Select
• Phase Shifted Operation
• Automatic Power Save Modes
• Forced PWM Mode
• Adjustable Soft Start
• Power Good / Thermal Good Outputs
• Undervoltage Lockout
• Overcurrent and Short-Circuit Protection
• Overtemperature Protection
• 3 × 2.5 mm HotRod™ Package
2 Applications
• Low Profile Point-of-Load Supply
• Solid State Drives
• Ultra Portable/Tablet/Embedded PC
• Optical Modules, CMOS Cameras
• Wireless Modules, Network Cards
3 Description
The TPS62480 is a synchronous 2-phase step-down
DC-DC converter for low profile point-of-load power
supplies. The input voltage range of 2.4 to 5.5 V
enables operation from typical 3.3-V or 5-V interface
supplies as well as from backup circuits dropping
down as low as 2.4 V. The output current is up to 6 A
continuously provided by two phases of 3 A each,
allowing the use of low-profile external components.
Both the rails are running out of phase, reducing
pulse current noise significantly.
The TPS62480 provides an automatically entered
power save mode to maintain high efficiency down to
very light loads. This incorporates an automatic
phase adding and shedding feature using both or
only one phase according to the actual load.
The device features a Power Good signal and an
adjustable soft start. Also, the device features a
Thermal Good signal to detect excessive internal
temperature. The output voltage can be changed to a
preselected value by VSEL pin. TPS62480 is able to
operate in 100% duty cycle mode.
The TPS62480 is packaged in a small 3 × 2.5 mm
HotRod™ package (RNC).
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS62480
VQFN (16)
3.00 × 2.50 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
space
Typical Application Schematic
2.4 to 5.5 V
22uF
22uF
VIN1
SW1
VIN2
SW2
VO
TPS62480
FB
EN
MODE
RS
VSEL
SS/TR
TG
AGND
PG
PGND
470nH
470nH
R3
3.3nF
Efficiency vs Output Current
space
VOUT/6A
R1
4x
R2
22uF
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.