TPS84620 4.5V to 14.5V Input, 6-A, Synchronous Buck Integrated Power Solution Power at your...
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Transcript of TPS84620 4.5V to 14.5V Input, 6-A, Synchronous Buck Integrated Power Solution Power at your...
TPS846204.5V to 14.5V Input, 6-A, Synchronous Buck Integrated Power Solution
Power at your Fingertips
Growing trend to simplify POL Solutions
• Designers must quickly solve technical problems during the development phase
– A simple power solution reduces burdens and brings peace-of-mind
– Allows focus on core competency
• Many architectural standards have fixed chassis sizes and power supply budgets
– Increasing PCB density allows designers to further differentiate their product
– High power efficiency allows increased card density and higher product performance
Greatest need is a simple POL solution to increase density without sacrificing performance
TPS846204.5V to 14.5V Input, 6-A Synchronous Buck Integrated Power Solution
• Integrated Inductor and Passives • Easy to Mount 15 x 9 x 2.8mm QFN
Package Delivers 800W/in3 Solution• 95% Peak Efficiency and 13°C/W ӨJA
Thermal Resistance• Adjustable Frequency, Soft Start, &
UVLO with Track, Clock and PG pins
• As Few as 3 External Components Required• 40% Smaller Package than Competitive 12V,
6A Integrated Inductor Solutions• Low Thermal Resistance Delivers Full 6-A
Rated Current without Airflow• Provides the Design Flexibility of a Discrete
Solution
• Broadband & Communication Infrastructure• Automated Test and Medical Equipment• Compact PCI / PCI Express / PXI Express• DSP & FPGA Point of Load Applications
TPS84620EVM-692SwitcherPro Software
1.2V to 5.5Vout
Easy to Use Point-of-Load
Only 3 External Components
• Requires only input & output capacitors, and a voltage programming resistor
• Frequency preset to 480kHz
Additional Features
• Optional components:– Frequency select resistor
– UVLO programming resistors
– Soft start capacitor
– Sequencing/Tracking resistors
Feature Set of a Discrete Solution
• Adjustable Fsw from 480kHz to 780kHz at RT pin
• Tracking (TR) pin configures various sequencing schemes
• Clock (CLK) pin synchronizes frequency to a master clock to avoid beat noise
• Adjustable under voltage lock out (UVLO)
• Programmable slow-start (SS)
• Remote sensing VSENSE+ pin improves regulation when connected to Vout near the load
• Powergood and Inhibit pins available
TPS846204.5V to 14.5V Input, 6-A Synchronous Buck Integrated Power Solution
Small & Easy-to-Mount QFN Package
• Small 9mm x 15mm x 2.8mm QFN package:– Achieves 800W/in3 density
including external components
– Occupies as little as 200mm2 including external components
• Package is easy to mount on the circuit board– See App Note SLUA271
• Pins are accessible from all four package sides
Top / Side View
21mm x 9 mm total solution size
TPS84620 Thermal Performance
Excellent Thermal Performance
• Provides 6A continuous output current up to 85°C ambient with no airflow; 12V and 5V inputs
• 13°C/W junction to ambient thermal resistance keeps the device and circuit board cooler for long term reliability
• 58.9°C maximum package temperature under operating conditions shown:
LFM = 0VIN = 12VOUT = 3.3IOUT = 6Ta=28.8°C
Electromagnetic Interference
• The TPS84620 is compliant with EN55022 Class B radiated emissions.
• Both graphs include the plots of the antenna in the horizontal and vertical positions.
August 24, 2009 TI Internal Information 9
TPS84620 Preferences Summary
1. Ease of Use– No Magnetics Selection or
Layout– No Loop Compensation– Fewer Passive Components
2. Performance– Good package thermal
dissipation– Similar feature set and
efficiency of a discrete DC/DC converter
3. Size– Novice not able to achieve
small solution size– 2.8mm height; use on back
side of PCBIntegrated Discrete Shown to scale
TPS84xxx Integrated Power Solution PlanStep-Down
Released
• 14.5Vin max• 6A continuous • 9x15x2.8mm
TPS84620
• 5.5Vin max• 2A continuous• 9x11x1.8mm QFN
TPS84210
• 5.5Vin max• 4A continuous• 9x11x2.8mm QFN
TPS84410
TPS84150
• 50Vin max• 1A continuous• 9x11x1.8mm QFN
TPS84250
• 50Vin max• 2A continuous• 9x11x2.8mm QFN
2Q 2011
Released
In Development
• Samples and Evaluation Module– In stock and orderable– TPS84620EVM-692 is $49– TPS84620 is $7.00 @ 1K resale– Low parts-count reference design
BOM, Schematic, and layout files in product folder
• SwitcherPro software support• Frequently Asked Questions Document
in ESP• Qualification Memo Document in ESP
Logistics and Support
• Factory Support– Marketing: Rich Nowakowski
214-480-1667 ([email protected])– Applications: Eric Wright
214-480-3403 ([email protected]