36-57Vin 5.4Vout 150mA Uses TPS54061 Features Light-load Efficiency Telecom Voltage Reference Design


Design files


This design uses a synchronous buck converter to provide light load efficiency with predictable ripple off "Telecom" voltage range. This approach is described in the TPS54061 datasheet from page 23 onwards. A low fixed frequency of 50kHz with operation in the discontinuous mode at all, but the highest loading achieves excellent efficiency at light loads without the "burst mode" which creates unpredicable ripple. PMP9535 extends operation into the 36-57V input range, and demonstates stability at 150mA load where conduction becomes continuous.

Output voltage options PMP9535.1
Vin (Min) (V) 36
Vin (Max) (V) 57
Vout (Nom) (V) 5.4
Iout (Max) (A) .15
Output Power (W) .81
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Buck- Multiphase
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Design files

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SLVUA47.PDF (909 K)

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


Detailed schematic diagram for design layout and components

SLVR495.PDF (205 K)

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SLVC557.ZIP (244 K)

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AC/DC & DC/DC converters (integrated FET)

TPS540614.7V to 60V Input, 200mA Synchronous Step-Down Converter with Low IQ

Data sheet: PDF | HTML

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Type Title Date
Test report PMP9535 Test Results Feb. 26, 2014

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