Single-Cell Li-Ion Charger for Enhanced EMI Performance in Handheld Industrial Applications Design


Design files


The PMP5291 is a single cell Lithium-ion battery charger reference design optimized for small low profile applications. The inductors used in the design are 1mm in height and the PC board is 20mmX30mm. Integrated power MOSFETs enable low EMI operation and minimize component count. The design was built and characterized for efficiency and output ripple in a single cell Lithium-ion application.

  • Enhanced EMI Performance Integrated Power FETs For Up To 0.5-A Charge Rate with low profile 1mm inductors
  • Suitable For 1-cell Li-Ion and Li-Polymer Battery Packs
  • Synchronous Fixed-Frequency PWM Controller Operating at 1.1 MHz With 0% to 100% Duty Cycle
  • This design was built and tested, and includes the test report and design files
Output voltage options PMP5291.1
Vin (Min) (V) 4
Vin (Max) (V) 11
Vout (Nom) (V) 4.2
Iout (Max) (A) .5
Output Power (W) 2.1
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Buck- Synchronous
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

SLUR122A.PDF (243 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

SLUR124A.PDF (57 K)

Detailed schematic diagram for design layout and components

SLUR121A.PDF (29 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

SLUR123A.ZIP (101 K)

Design file that contains information on physical board layer of design PCB


Includes TI products in the design and potential alternatives.

Battery charger ICs

BQ24120Standalone 1-2 cell 2A synchronous Buck battery charger with enhanced EMI performance

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report PMP5291 Test Results (Rev. A) Sep. 28, 2015

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