Texas Instruments Evaluation Board for the LM5015 LM5015ISOEVAL/NOPB LM5015ISOEVAL/NOPB 데이터 시트
제품 코드
LM5015ISOEVAL/NOPB
Schematic of Isolated Two-Switch Flyback DC-DC Regulator
shows the input ripple current and output ripple voltage full load (2.5A) and mid input voltage
(48V).
Horizontal Resolution: 2 µs/div
Trace 1: The output voltage ripples (ac coupled). 50 mV/div
Trace 2: The input current ripples (ac coupled). 100 mA/div
Operating condition: Vin = 48V, Vout = 5V, Iout = 2.5A
Trace 1: The output voltage ripples (ac coupled). 50 mV/div
Trace 2: The input current ripples (ac coupled). 100 mA/div
Operating condition: Vin = 48V, Vout = 5V, Iout = 2.5A
Figure 5. Input Ripple Current and Output Ripple Voltage
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Schematic of Isolated Two-Switch Flyback DC-DC Regulator
shows the schematic to reconfigure the evaluation board as an Isolated Two-Switch Flyback DC-
DC regulator. Refer to the changes in BOM at the end of this article. Note that the use of dual-diode D3
herein is owing to the D3 footprint on the PC board. Only the high side of the dual-diode D3 is used in
Flyback configuration, and the low side diode is always reverse biased during normal operation.
herein is owing to the D3 footprint on the PC board. Only the high side of the dual-diode D3 is used in
Flyback configuration, and the low side diode is always reverse biased during normal operation.
Figure 6. Schematic of Isolated Two-Switch Flyback DC-DC Regulator Configuration
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SNVA291A – October 2007 – Revised April 2013
AN-1724 LM5015 Isolated Two-Switch DC-DC Regulator Evaluation Board
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