Lm5122 module 20v 200W synchronous boost controller diy

Lm5122 module 20v 200W synchronous boost controller

Lm5122 module 20v 200W synchronous boost controller. Upgrade your power supply with the LM5122 module, a high-performance synchronous boost controller that offers up to 200W of power output. With a wide input voltage range and high efficiency design, this IC is perfect for demanding applications. Don’t settle for less, optimize your power supply with the LM5122 today!

Characteristics Lm5122 module 20v 200W synchronous boost controller diy

  • Input : 11-19V with XT-30+DC_044 input slot
  • Output: voltage: 20.2V
  • Output current capability: up to 10A
  • Current limit on input side
  • Max Power: 200W

Generally input current should not exceed 15A design efficiency 96% inductor can be flexibly replaced according to your actual scenario, it is recommended to adjust between 3.3-10uh.

Schematic Lm5122 module 20v 200W synchronous boost controller diy


About IC LM5122

The IC LM5122 is a high-performance, dual-channel synchronous buck controller that is designed for high efficiency power supplies. It features a wide input voltage range, up to 75V, making it suitable for a variety of applications. The LM5122 also offers a programmable switching frequency, adjustable current limit, and a voltage feed-forward function for improved transient response. With integrated protection features such as overcurrent protection, thermal shutdown, and undervoltage lockout, the LM5122 provides a reliable and flexible solution for power supply designs. Overall, the LM5122 is a versatile and efficient IC that is ideal for demanding power supply applications.

The LM5122 is a multiphase capable synchronous boost controller intended for high-efficiency synchronous boost regulator applications. The control method is based upon peak-current-mode control.

Current-mode control provides inherent line feedforward, cycle-by-cycle current limiting, and ease of loop compensation. The switching frequency is programmable up to1 MHz. Higher efficiency is achieved by two robust N-channel MOSFET gate drivers with adaptive dead-time control.

A user-selectable diode-emulation mode also enables discontinuous-mode operation for improved efficiency at light load conditions.

An internal charge pump allows 100% duty cycle for high-side synchronous switch (bypass operation).

A180° phase shifted clock output enables easy multiphase interleaved configuration. Additional features include thermal shutdown, frequency synchronization, hiccup-mode current limit, and adjustable line under voltage lockout.


BOM module 20v 200W synchronous boost controller diy

Value PART Description Quantity
3K RB R0402 — SMD resistor 1
36.5K RCO R0402 — SMD resistor 1
7.15K RENB R0402 — SMD resistor 1
49.9 RENT R0402 — SMD resistor 1
44.2K RFS R0402 — SMD resistor 1
205K RSL R0402 — SMD resistor 1
47.5K RT R0402 — SMD resistor 1
22uF CO6,CI2,CI3,CO3,CO4,CO5 1206 — SMD capacitor 6
10uF CVC C0603 — SMD capacitor 1
1uF CVI1 C0603 — SMD capacitor 1
150nF CBS C0603 — SMD capacitor 1
180pF CCO1 C0402 — SMD capacitor 1
10nF CCO2 C0402 — SMD capacitor 1
470nF CRE C0402 — SMD capacitor 1
33nF CSS C0402 — SMD capacitor 1
470uF CI1,CO1,CO2 10×16 Solid Capacitors 3
LM5122MHX/NOPB U1 Buck-boost type 4.5V~65V HTSSOP-20-EP DC-DC Converters 1
CSD17305Q5A QB 30-V, N channel NexFET 1
CSD17573Q5B QT 30-V, N channel NexFET 1
SS24FL DBS SOD-123 — Schottky Barrier Diodes 1
DC-044B-3A-2.0 DC2 DC Power Receptacle 1
4.7uH L1 17A 10uH 1
XT30PW-M XT-IN, XT-OUT Aircraft plug horizontal 2
0.002R RSS R2512 — 2W 2 mΩ Surface Mount Current Sensing Resistors Shunt 1

Download files, links, and notes

Pcb 3D

Download PCB in Gerber and PDF



Source: https://oshwhub.com/LoveTombSeries/LoveTomb584

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About the author
Xtronic.org blog author. Electronics technician for the technical school of Brasilia - Brazil. Interested in electronics, circuits and technology in general.

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