TPS50301-HT Datasheet, PDF (1/28 Pages) Texas Instruments – 1.6-V TO 6.3-V INPUT, 3-A/6-A SYNCHRONOUS STEP DOWN SWIFT CONVERTER

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TPS50301-HT
TPS50601-SP
SLVSA94D – DECEMBER 2012 – REVISED JANUARY 2013
1.6-V TO 6.3-V INPUT, 3-A/6-A SYNCHRONOUS STEP DOWN SWIFT™ CONVERTER
Check for Samples: TPS50301-HT, TPS50601-SP
FEATURES
1
•2 Peak Efficiency: 95% (V_O = 3.3 V)
• Integrated 55-mΩ/50-mΩ MOSFETs
• Split Power Rail: 1.6 V to 6.3 V on PVIN
• Power Rail: 3 V to 6.3 V on VIN
• TPS50301-HT: 3 A
• TPS50601-SP: 6 A
• TPS50601-SP:
SEL Latchup Immune to LET = 85 MeV-cm²/mg
• TPS50601-SP:
Total Dose (TID) tolerance = 100kRad (Si)
• Flexible Switching Frequency Options:
– 100-kHz to 1-MHz Adjustable Internal
Oscillator
– External Sync Capability from 100 kHz
to 1 MHz
– Sync Pin Can Be Configured as a 500-kHz
Output for Master/Slave Applications
• 0.795-V ±1.258% Voltage Reference at 25°C
• Monotonic Start-Up into Pre-Biased Outputs
• Adjustable Slow Start and Power Sequencing
• Power Good Output Monitor for Undervoltage
and Overvoltage
• Adjustable Input Undervoltage Lockout
• For SWIFT™ Documentation, Visit
http://www.ti.com/swift
APPLICATIONS
• Point of Load Regulation
• TPS50601-SP: Rad Tolerant Applications
• TPS50301-HT: Down-Hole Drilling
• Supports Harsh Environment Applications
• TPS50301-HT Available in Extreme
(–55°C to 210°C) Temperature Range
TPS50601-SP Available in Military
(–55°C to 125°C) Temperature Range ⁽¹⁾
• TPS50301-HT: Texas Instruments' high
temperature products utilize highly optimized
silicon (die) solutions with design and process
enhancements to maximize performance over
extended temperatures.
(1) Custom temperature ranges available
DESCRIPTION
The TPS50301 is a 6.3-V, 3-A and the TPS50601 is a 6.3-V, 6-A synchronous step down converter which is
optimized for small designs through high efficiency and integrating the high-side and low-side MOSFETs. Further
space savings are achieved through current mode control, which reduces component count, and a high switching
frequency, reducing the inductor's footprint. The devices are offered in a thermally enhanced 20-pin ceramic,
dual in-line flatpack package.
1.00
0.95
0.90
0.85
0.80
0.75
0.70
0.65
0.60
0.55
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
0.00
Efficiency vs. Load Current Vin=5V
Vo = 3.3V
Vo = 1.2V
1.00
2.00
3.00
4.00
5.00
6.00
IL- Load Current -A
60.00
58.00
56.00
54.00
52.00
50.00
48.00
46.00
44.00
42.00
40.00
0.00
Current Sharing vs. Load Current
POL # 2
POL # 1
2.00
4.00
6.00
8.00
10.00
12.00
IL-Current Load_A
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.
SWIFT is a trademark 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 © 2012–2013, Texas Instruments Incorporated