Variable Outputs 2-Cell Battery 200W Heater Element Power Stage Buck Boost Reference Design
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Key Document


PMP20327 is a synchronous 4-switch buck-boost converter which utilizes the LM5175 controller as a heater element power stage in applications such as E-Cigarettes. The output voltage can be selected from 1V to 10V at 20A to 45A using a trim resistor at the FB pin with a 0.2V to 3.1V bias voltage. This design also uses a non-sync boost regulator LMR62014 to provide the bias power for LM5175 during low Vin operation. The LM5175 pulse-by-pulse current limiting is inherent in the current-mode controller. The board includes enable, synchronization and power good functions. This design supports resistive heating element ranging from 0.1Ω to 0.5Ω to support various 200W operating conditions.

  • 6V to 8.6V in, output 1V to 10V @ 20A to 45A
  • LM5175 Buck-Boost controller to achieve over 90% efficiency over entire operating conditions
  • Compact size, slim form factor, suitable for low-power applications
  • Solution Size: 26mm x 57mm
  • 98% peak efficiency

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(Output Voltage 1)
(Output Voltage 2)
(Output Voltage 3)
(Output Voltage 4)
(Output Voltage 5)
Vin (Min) (V)66666
Vin (Max) (V)
Vout (Nom) (V)4.476.327.758.9410
Iout (Max) (A)45322622.520
Output Power (W)201.15202.24201.5201.15200
TopologyBuck Boost- 4 SwitchBuck Boost- 4 SwitchBuck Boost- 4 SwitchBuck Boost- 4 SwitchBuck Boost- 4 Switch

TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM5175  42V Wide Vin 4-Switch Synchronous Buck-Boost Controller  Buck-boost & inverting  Sample & Buy View Design Kits & Evaluation Modules
LMR62014  SIMPLE SWITCHER® 2.7V to 14V, 1.4A Step-Up Regulator in SOT-23 Package  Step-up (boost)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LM5175 Download Download
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LMR62014 Download Download

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User guides (1)
Title Type Size (KB) Date
PDF 3635 04 Nov 2019
Design files (6)
Title Type Size (KB) Date
ZIP 371 26 Jul 2016
ZIP 509 26 Jul 2016
PDF 1277 26 Jul 2016
PDF 149 26 Jul 2016
PDF 123 26 Jul 2016
PDF 362 26 Jul 2016

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