Buck Converters for Power Over Ethernet

A buck converter is a power efficient voltage step-down converter that changes a higher voltage to a lower voltage. Whereas a linear regulator can achieve the same purpose, regulators can waste more energy via conversion of excess energy to heat. For this reason, a buck DC/DC converter is the preferred choice for power-efficient designs. A DC/DC boost converter, also known as a step-up converter, is a semiconductor device or electrical circuit that has an output DC voltage that is greater than the DC input voltage.

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Qty. RoHS ECAD Model Topology
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Output Voltage
Output Current
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Texas Instruments Switching Controllers Multiphase bidirecti onal current contro A 595-LM5170PHPR
Datasheet
245In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 250

Boost, Buck 2 Output 50 kHz to 500 kHz 99 % 100 mV to 100 V 50 A - 40 C + 125 C SMD/SMT TQFP-48 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Mid Input Sync Buck w/Vltg Feed-Fwd
Datasheet
2 629In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3 000

Buck 1 Output 100 kHz to 1 MHz 95 % 700 mV to 23 V 20 A - 40 C + 85 C SMD/SMT VQFN-20 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 4.5V to 20V Buck A 5 95-TPS40195PW A 595 A 595-TPS40195PW
Datasheet
2 350In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 000

Buck 1 Output 600 kHz 85 % 591 mV 20 A - 40 C + 85 C SMD/SMT TSSOP-16 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Current-Mode NB Sys Pwr Controller
Datasheet
2 519In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3 000

Buck 2 Output 200 kHz to 1 MHz 99 % 1 V to 12 V 20 A - 40 C + 85 C SMD/SMT WQFN-32 AEC-Q100 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Adj Hi-Efficient Ste p-Dwn 20uA SOT-23 A A 595-TPS64202DBVT
Datasheet
2 561In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3 000

Buck 1 Output 550 kHz 100 % 1.2 V to 6.5 V 3 A - 40 C + 85 C SMD/SMT SOT-23-6 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers High Speed PWM Contr oller
Datasheet
36In Stock
Min.: 1
Mult.: 1

Boost, Buck 2 Output 1 MHz 100 % 5.1 V 1.5 A 0 C + 70 C Through Hole PDIP-16 Tube

Texas Instruments Switching Controllers BiCMOS Low-Power Cur rent Mode A 595-UCC A 595-UCC38C40DGK
Datasheet
1 820In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

Boost, Buck, Flyback, Forward 1 Output 1 MHz 100 % 18 V 1 A 0 C + 70 C SMD/SMT VSSOP-8 Reel, Cut Tape, MouseReel
Microchip Technology Switching Controllers Synchronous Buck PWM Control 600kHz 12ns
Datasheet
441In Stock
Min.: 1
Mult.: 1

Buck 1 Output 600 kHz 85 % 5 V 50 mA - 40 C + 125 C SMD/SMT DFN-10 AEC-Q100 Tube
Microchip Technology Switching Controllers 75V, Synchronous Buck Controller Featuring Adaptive On-Time Control with Light Load Mode Selection
Datasheet
6 036In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5 000

Buck 1 Output 270 kHz to 800 kHz 85 % 600 mV to 30 V - 40 C + 125 C SMD/SMT VQFN-16 Reel, Cut Tape, MouseReel
Analog Devices Switching Controllers 20V 20A Buck Cntrl + Internal 5V LDO
Datasheet
1 343In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 500

Buck 2 Output 300 kHz to 600 kHz 93 % 5 V 20 A - 40 C + 85 C SMD/SMT LFCSP-32 Reel, Cut Tape, MouseReel
Analog Devices Switching Controllers 60V Sync 4-Switch Buck-Boost Cntr w/ SS
Datasheet
127In Stock
Min.: 1
Mult.: 1

Boost, Buck 1 Output 630 kHz 95 % 0 V to 60 V 25 A - 40 C + 125 C SMD/SMT QFN-28 AEC-Q100 Tube
Texas Instruments Switching Controllers Automotive 2.2-MHz l ow-IQ synchronous b A 595-LM25141QRGETQ1
Datasheet
5 759In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3 000

Buck 1 Output 440 kHz, 2.2 MHz 99 % 3.3 V, 5 V, 1.5 V to 15 V 20 A - 40 C + 150 C SMD/SMT VQFN-24 AEC-Q100 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Automotive 2.2-MHz l ow-IQ synchronous b
Datasheet
3 988In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3 000

Buck 1 Output 440 kHz, 4.4 MHz 99 % 3.3 V, 5 V, 1.5 V to 15 V 30 A - 40 C + 150 C SMD/SMT VQFN-24 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Adj Hi-Efficient Ste p-Dwn 20uA SOT-23 A A 595-TPS64201DBVT
Datasheet
1 249In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3 000

Buck 1 Output 450 kHz 100 % 1.2 V to 6.5 V 3 A - 40 C + 85 C SMD/SMT SOT-23-6 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Current-Mode PWM Con troller A 595-UC384 A 595-UC3843AD
Datasheet
3 144In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

Boost, Buck, Flyback, Forward 1 Output 500 kHz 100 % 5 V 200 mA 0 C + 70 C SMD/SMT SOIC-14 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers BiCMOS Low-Power Cur rent Mode A 595-UCC A 595-UCC38C43D
Datasheet
1 951In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

Boost, Buck, Flyback, Forward 1 Output 1 MHz 100 % 18 V 1 A 0 C + 70 C SMD/SMT SOIC-8 Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Switching Controllers Ultra-High-Efficiency, Dual Step-Down Co
Datasheet
114In Stock
Min.: 1
Mult.: 1

Buck 2 Output 200 kHz to 540 kHz 100 % 1 V to 5.5 V 8 A - 40 C + 85 C SMD/SMT QSOP-28 Tube
Analog Devices / Maxim Integrated Switching Controllers Low-Cost, Wide Input Range, Step-Down Co
Datasheet
1 353In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

Buck 1 Output 300 kHz 95 % 800 mV to 23 V 15 A - 40 C + 85 C SMD/SMT UMAX-10 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Secondary Side Switc hing Reg A 926-LM51 A 926-LM5115MTCX/NOPB
Datasheet
267In Stock
Min.: 1
Mult.: 1

Buck 1 Output 1 MHz 85 % 750 mV to 13.5 V 2.5 A - 40 C + 125 C SMD/SMT TSSOP-16 Tube
Microchip Technology Switching Controllers 38V DC-DC Buck Controller with HSC
Datasheet
4 238In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5 000

Buck 1 Output 200 kHz to 600 kHz 85 % 800 mV to 24 V 15 A - 40 C + 125 C SMD/SMT MLF-16 Reel, Cut Tape, MouseReel
Analog Devices Switching Controllers 40V Low IQ Dual Buck CTL w/ 3.3VOUT1
Datasheet
199In Stock
Min.: 1
Mult.: 1

Buck 1 Output 100 kHz to 3 MHz 99 % 800 mV to 40 V 5 A - 40 C + 125 C SMD/SMT Tube
Analog Devices Switching Controllers L IQ , 60V, Hi Freq Sync Buck Cntr
Datasheet
159In Stock
Min.: 1
Mult.: 1

Buck 1 Output 320 kHz to 2.25 MHz 98 % 800 mV to 24 V 20 A - 40 C + 125 C SMD/SMT QFN-20 Tube
Texas Instruments Switching Controllers 3.0-20V PMBus Sync B uck Controller A 59 A 595-TPS40400RHLT
Datasheet
2 384In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3 000

Buck 1 Output 200 kHz to 2 MHz 90 % 600 mV 20 A - 40 C + 125 C SMD/SMT VQFN-24 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers AC Low Iq dual Sync Buck Cntrlr
Datasheet
1 850In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 000

Buck 2 Output 150 kHz to 600 kHz 98.75 % 5 V 6 A - 40 C + 125 C SMD/SMT HTSSOP-38 AEC-Q100 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Auto Cat Tr Synch Bu ck Controller
Datasheet
993In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

Buck 4 Output 50 kHz to 500 kHz 97 % 900 mV to 8.5 V 15 A - 40 C + 125 C SMD/SMT LQFP-48 AEC-Q100 Reel, Cut Tape, MouseReel