Boost Converters

Boost converters, also known as step-up converters, are DC-to-DC power conversion devices (a type of switch mode converter) used to increase voltage from its input supply to its output, while simultaneously stepping down the current. The power input can come from any suitable DC source, such as batteries, solar panels, rectifiers, and DC generators. Boost converters contain at least two semiconductors, such as diodes or transistors, and at least one energy storage element, such as a capacitor, an inductor, or it may contain both in combination.

RS Components offer a range of boost converters from a variety of brands, including Analog Devices, Maxim Integrated, Texas Instruments, and more.

How do boost converters work?

The boost converter is able to store energy in its inductor and then simultaneously release it at a higher load voltage than was inputted in the beginning making it very useful in speeding up devices. In order to conserve the power of the circuit (as P=VI), the output current is lower than the input current to account for the higher voltage.

Boost converters can primarily work in one of two modes: continuously or discontinuously. In the continuous mode, the current is never allowed to reach zero during the discharging process (when the transistor is turned off) and thus the inductor can consistently and efficiently produce the boosted voltage rate. In this mode, the timing of the transistor switching between ON/OFF is dimensioned in such a way that the inductor is always connected back to the input supply quickly, never allowing the inductor to be completely discharged.

Alternatively, running the boost converter in the discontinuous mode means there is a greater period of time between the ON state and OFF state of the transistor. During this time, the inductor may become fully discharged and remain inactive until the transistor is ON again, and this fluctuation may cause voltages to ripple.

Where are booster converters used?

  • LCD, OLED displays
  • Haptic displays
  • Portable devices like tablets, MP3 players, and mobile phones
  • Bar-code scanners

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Description Price Regulator Function Maximum Output Current Number of Outputs Line Regulation Load Regulation Mounting Type Package Type Pin Count Output Type Maximum Switching Frequency Switching Regulator Efficiency Dimensions Height
RS Stock No. 145-7084
Mfr. Part No.TPS61032PWP
HK$26.061
Each (In a Tube of 90)
units
Step Up 1A 1 0.6 % 0.6 % Surface Mount HTSSOP 16 Fixed 600 kHz Yes 96% 5 x 4.4 x 1.15mm 1.15mm
RS Stock No. 516-647
Mfr. Part No.TPS61032PWP
HK$30.54
Each
units
Step Up 1A 1 0.6 % 0.6 % Surface Mount HTSSOP 16 Fixed 600 kHz Yes 96% 5 x 4.4 x 1.15mm 1.15mm
RS Stock No. 121-9346
Mfr. Part No.LMR62421XMFE/NOPB
HK$13.48
Each (On a Reel of 250)
units
Step Up 3A 1 0.06 %/V - Surface Mount SOT-23 5 Adjustable 2000 kHz Yes - 3.05 x 1.75 x 1.3mm 1.3mm
RS Stock No. 811-5863
Mfr. Part No.LMR62421XMFE/NOPB
HK$17.595
Each (In a Pack of 10)
units
Step Up 3A 1 0.06 %/V - Surface Mount SOT-23 5 Adjustable 2000 kHz Yes - 3.05 x 1.75 x 1.3mm 1.3mm
RS Stock No. 162-9817
Mfr. Part No.LMR61428XMM/NOPB
HK$6.808
Each (On a Reel of 1000)
units
Step Up 2.85A 1 - - Surface Mount VSSOP 8 Adjustable 2 MHz Yes 87% 3.1 x 3.1 x 0.95mm 0.95mm
RS Stock No. 914-2995
Mfr. Part No.LMR61428XMM/NOPB
HK$15.908
Each (In a Pack of 5)
units
Step Up 2.85A 1 - - Surface Mount VSSOP 8 Adjustable 2 MHz Yes - 3.1 x 3.1 x 0.95mm 0.95mm
RS Stock No. 100-3984
Mfr. Part No.LM2577T-ADJ/NOPB
HK$49.508
Each (In a Tube of 45)
units
Step Up 3A 1 50 mV 50 mV Through Hole TO-220 5 Adjustable 56 kHz Yes - 10.16 x 4.7 x 8.89mm 8.89mm
RS Stock No. 533-8120
Mfr. Part No.LM2577T-ADJ/NOPB
HK$56.03
Each
units
Step Up 3A 1 50 mV 50 mV Through Hole TO-220 5 Adjustable 56 kHz Yes 80% 10.16 x 4.7 x 8.89mm 8.89mm
RS Stock No. 162-5949
Mfr. Part No.TPS61202DRCT
HK$14.276
Each (On a Reel of 250)
units
Step Up 600mA 1 0.1 % 0.1 % Surface Mount SON 10 Fixed 1650 kHz Yes 90% 3 x 3 x 0.9mm 0.9mm
RS Stock No. 661-6945
Mfr. Part No.TPS61202DRCT
HK$25.79
Each
units
Step Up 600mA 1 0.1 % 0.1 % Surface Mount SON 10 Fixed 1650 kHz Yes 90% 3 x 3 x 0.9mm 0.9mm
RS Stock No. 920-3523
Mfr. Part No.LM2585S-ADJ/NOPB
HK$72.279
Each (In a Tube of 45)
units
Step Up 3A 1 100 mV 100 mV Surface Mount TO-263 5 Adjustable 115 kHz Yes - 10.16 x 8.64 x 4.57mm 4.57mm
RS Stock No. 516-675
Mfr. Part No.TPS61130PW
HK$39.71
Each
units
Boost/Buck Controller, Inverting, Non-Inverting 320mA 2 0.6 % 0.6 % Surface Mount TSSOP 16 Adjustable 500 kHz Yes 90% 5 x 4.4 x 1.15mm 1.15mm
RS Stock No. 812-3659
Mfr. Part No.TPS61240DRVT
HK$8.693
Each (On a Tape of 10)
units
Step Up 450mA 1 - - Surface Mount SON 6 Fixed 3.5 MHz Yes - 2.1 x 2.1 x 0.75mm 0.75mm
RS Stock No. 533-3399
Mfr. Part No.LM2587T-ADJ/NOPB
HK$101.98
Each
units
Step Up - 1 100 mV 100 mV Through Hole TO-220 5 Adjustable 115 kHz Yes 90% 10.16 x 4.57 x 8.64mm 8.64mm
RS Stock No. 121-9165
Mfr. Part No.TPS61201DRCT
HK$14.276
Each (On a Reel of 250)
units
Step Up 300mA 1 0.1 % 0.1 % Surface Mount SON 10 Fixed 1650 kHz Yes - 3 x 3 x 0.9mm 0.9mm
RS Stock No. 162-8731
Mfr. Part No.TLV61225DCKT
HK$6.846
Each (On a Reel of 250)
units
Boost Converter 400mA 1 0.5 % 0.5 % Surface Mount SC-70 6 Fixed - - 94% 2.15 x 1.4 x 1mm 1mm
RS Stock No. 709-8877
Mfr. Part No.TPS61085DGKT
HK$20.66
Each
units
Step Up 2A 1 0.0002 %/V 0.11 %/A Surface Mount MSOP 8 Adjustable 1200 kHz Yes - 3 x 3 x 0.97mm 0.97mm
RS Stock No. 812-3631
Mfr. Part No.TPS61221DCKT
HK$10.68
Each (In a Pack of 10)
units
Step Up 400mA 1 0.5 % 0.5 % Surface Mount SC-70 6 Fixed 2000 kHz Yes - 2.15 x 1.4 x 1mm 1mm
RS Stock No. 162-9892
Mfr. Part No.TPS61088RHLT
HK$23.711
Each (On a Reel of 250)
units
Synchronous Boost Converter 10A 3 - - Surface Mount VQFN 20 Fixed 2.2 MHz Yes 91% 4.65 x 3.65 x 0.95mm 3.65mm
RS Stock No. 389-372
Mfr. Part No.TPS61070DDCR
HK$11.546
Each (In a Pack of 5)
units
Step Up 150mA 1 1 % 1 % Surface Mount SOT-23 6 Adjustable 1200 kHz Yes 90% 2.9 x 1.6 x 0.87mm 0.87mm