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Texas Instruments LM5017MRX/NOPB | Demoboard PMP10558

Low Profile Triple Output Isolated Fly-Buck Power Supply for Industrial Applications

Overview

TopologyFlyBuck (Double Buck)
Input voltage18-32 V
Output 112 V / 0.6 A
Output 2-12 V / 0.6 A
Output 324 V / 0.6 A

Description

The PMP10558 reference design is a low profile triple output isolated Fly-Buck power supply for industrial applications. The power supply has a synchronous buck regulator, LM5017, and a low profile (6mm) transformer. It generates three isolated outputs depending on the transformer selection. The LM5017 is a 100V wide Vin, 600mA synchronous buck regulator. The input voltage range of the design is 18V to 30V, making it suitable for 24V input industrial applications. The Fly-Buck can regulate the secondary side outputs without an opto-coupler or auxillary winding and is capable of achieving good cross regulation within ±5%. With LM5017's constant on-time control, no loop compensation is required, which simplifies the design and helps reduce the external part count and BOM cost.

Features

Vin: 18V to 42V4 layer board (1 oz. copper on top and bottom, 1/2 oz. on middle two layers)Board dimensions: 3.2" x 1.6"Good thermal performance and efficiencyREMARK: BOM and Schematics are added with main pdf.

Products

Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
VIN
VOut1(V)
IOut1(mA)
VOut2(V)
IOut2(mA)
VOut3(V)
IOut3(mA)
Vbuck(V)
L(µH)
NPRI : NSEC
ISAT(mA)
LS(nH)
VT(V (AC))
fswitch(kHz)
Mount
L(mm)
W(mm)
H(mm)
Samples
WE-IBTI Isolated Buck Transformers, 16 - 36 V (DC), 24 V
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 16 - 36 V (DC)
Output Voltage 124 V
Output Current 120 mA
Output Voltage 212 V
Output Current 240 mA
Output Voltage 3-12 V
Output Current 340 mA
Buck Voltage13 V
Inductance45 µH
Turns Ratio1:2.36:1.16:1.16 
Saturation Current960 mA
Leakage Inductance450 nH
Insulation Test Voltage1500 V (AC)
Switching Frequency 200 - 350
MountSMT 
Length12.95 mm
Width12.7 mm
Height5.98 mm