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Details, datasheet, quote on part number:TPS54614
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Datasheet text preview:
TPS54611, TPS54612, TPS54613 TPS54614, TPS54615, TPS54616
Typical Size 6,6 mm X 9,8 mm SLVS400A AUGUST 2001 REVISED JANUARY 2002
3-V TO 6-V INPUT, 6-A OUTPUT SYNCHRONOUS BUCK PWM SWITCHER WITH INTEGRATED FETs (SWIFT)
FEATURES D 30-m, 12-A Peak MOSFET Switches for High D D D D D D
Efficiency at 6-A Continuous Output Source and Sink 0.9-V, 1.2-V, 1.5-V, 1.8-V, 2.5-V and 3.3-V Fixed Output Voltage Devices With 1.0% Initial Accuracy Internally Compensated for Easy Use and Minimal Component Count 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
DESCRIPTION
The SWIFT family of dc/dc regulators, the TPS54611, TPS54612, TPS54613, TPS54614, TPS54615 and TPS54616 low-input voltage high-output current synchronous-buck PWM converters integrate all required active components. Included on the substrate are true, high-performance, voltage error amplifiers that provide high performance under transient conditions; 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 TPS546116 devices are available in a thermally enhanced 28-pin TSSOP (PWP) PowerPAD package, which eliminates bulky heatsinks. TI provides evaluation modules and the SWIFT designer software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment development cycles.
EFFICIENCY AT 350 kHz
100 95 90 85 Efficiency % 80 75 70 65
APPLICATIONS D Low-Voltage, High-Density Systems With D D D
Power Distributed at 5 V or 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
SIMPLIFIED SCHEMATIC Input VIN PH TPS54614 BOOT PGND VBIAS VSENSE AGND Output
60 55 50 0 1 2 3 4 5 6 Load Current A
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. PowerPAD and SWIFT are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
Copyright 2002, Texas Instruments Incorporated
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TPS54611, TPS54612, TPS54613 TPS54614, TPS54615, TPS54616
SLVS400A AUGUST 2001 REVISED JANUARY 2002
PWP PACKAGE (TOP VIEW)
AGND VSENSE NC PWRGD BOOT PH PH PH PH PH PH PH PH PH
1 2 3 4 5 6 7 8 9 10 11 12 13 14
28 27 26 25 24 23 THERMAL 22 PAD 21 20 19 18 17 16 15
RT FSEL SS/ENA VBIAS VIN VIN VIN VIN VIN PGND PGND PGND PGND PGND
AVAILABLE OPTIONS TA OUTPUT VOLTAGE PACKAGED DEVICES PLASTIC HTSSOP (PWP) TPS54611PWP TPS54612PWP TPS54613PWP 40°C to 85°C 85 C TA OUTPUT VOLTAGE PACKAGED DEVICES PLASTIC HTSSOP (PWP) TPS54614PWP TPS54615PWP TPS54616PWP
0.9 V 40°C to 85°C 85 C 1.2 V 1.5 V
1.8 V 2.5 V 3.3 V
The PWP package is also available taped and reeled. Add an R suffix to the device type (i.e., TPS54616PWPR). See application section of data sheet for PowerPAD drawing and layout information.
Terminal Functions
TERMINAL NAME AGND BOOT NC PGND PH PWRGD RT SS/ENA FSEL VBIAS VIN VSENSE NO. 1 5 3 1519 614 4 28 26 27 25 2024 2 DESCRIPTION Analog ground. Return for slow-start capacitor, VBIAS capacitor, RT resistor FSEL. Make PowerPAD connection to AGND. Bootstrap input. 0.022-µF to 0.1-µF low-ESR capacitor connected from BOOT to PH generates floating drive for the high-set FET driver. No connection Power ground. High current return for the low-side driver and power MOSFET. Connect PGND with large copper areas to the input and output supply returns, and negative terminals of the input and output capacitors. Phase input/output. Junction of the internal high-side and low-side power MOSFETs, and output inductor. Power good open drain output. High-Z when VSENSE 90% Vref, otherwise PWRGD is low. Note that output is low when SS/ENA is low or internal shutdown signal active. Frequency setting resistor input. Connect a resistor from RT to AGND to set the switching frequency. Slow-start/enable input/output. Dual function pin which provides logic input to enable/disable device operation and capacitor input to externally set the start-up time. Frequency select input. Provides logic input to select between two internally set switching frequencies. Internal bias regulator output. Supplies regulated voltage to internal circuitry. Bypass VBIAS pin to AGND pin with a high quality, low-ESR 0.1-µF to 1-µF ceramic capacitor. Input supply for the power MOSFET switches and internal bias regulator. Bypass VIN pins to PGND pins close to device package with a high quality, low-ESR 1-µF to 10-µF ceramic capacitor. Error amplifier inverting input. Connect directly to output voltage sense point.
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TPS54611, TPS54612, TPS54613 TPS54614, TPS54615, TPS54616
SLVS400A AUGUST 2001 REVISED JANUARY 2002
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
Input voltage range, VI: VIN, SS/ENA, FSEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to 7 V RT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to 6 V VSENSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to 4 V BOOT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to 17 V Output voltage range, VO: VBIAS, PWRGD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to 7 V PH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.6 V to 10 V Source current, IO: PH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited VBIAS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 mA Sink current, IS: PH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 A SS/ENA, PWRGD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 mA Voltage differential, AGND to PGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.3 V Continuous power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Power Dissipation Rating Table Operating virtual junction temperature range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40°C to 125°C Storage temperature, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300°C
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. DISSIPATION RATING TABLE PACKAGE 28 Pin PWP with solder 28 Pin PWP without solder THERMAL IMPEDANCE JUNCTION-TO-AMBIENT 18.2 °C/W 40.5 °C/W TA = 25°C POWER RATING 5.49 W§ 2.48 W TA = 70°C POWER RATING 3.02 W 1.36 W TA = 85°C POWER RATING 2.20 W 0.99 W
NOTE: For more information on the PWP package, refer to TI technical brief, literature number SLMA002. Test Board Conditions: 1. 3" x 3", 4 layers, thickness: 0.062" 2. 1.5 oz. copper traces located on the top of the PCB 3. 1.5 oz. copper ground plane on the bottom of the PCB 4. 0.5 oz. copper ground planes on the 2 internal layers 5. 12 thermal vias (see "Recommended Land Pattern" in applications section of this data sheet) § Maximum power dissipation may be limited by over current protection. ADDITIONAL 6A SWIFT DEVICES DEVICE TPS54610 OUTPUT VOLTAGE 0.9 V to 3.3 V
related dc/dc products
D UCC3585--dc/dc controller D TPS759xx--7.5 A low dropout regulator D PT6440 series--6 A plugin modules
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