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.
| Output voltage options | PMP20327.1 | PMP20327.2 | PMP20327.3 | PMP20327.4 | PMP20327.5 |
|---|---|---|---|---|---|
| Vin (Min) (V) | 6 | 6 | 6 | 6 | 6 |
| Vin (Max) (V) | 8.6 | 8.6 | 8.6 | 8.6 | 8.6 |
| Vout (Nom) (V) | 4.47 | 6.32 | 7.75 | 8.94 | 10 |
| Iout (Max) (A) | 45 | 32 | 26 | 22.5 | 20 |
| Output Power (W) | 201.15 | 202.24 | 201.5 | 201.15 | 200 |
| Isolated/Non-Isolated | Non-Isolated | Non-Isolated | Non-Isolated | Non-Isolated | Non-Isolated |
| Input Type | DC | DC | DC | DC | DC |
| Topology | Buck Boost- 4 Switch | Buck Boost- 4 Switch | Buck Boost- 4 Switch | Buck Boost- 4 Switch | Buck Boost- 4 Switch |
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | Test report | Variable Outputs 2-Cell Battery 200W Heater Element Power Stage Reference Design (Rev. C) | Nov. 04, 2019 |
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