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reference designLM5017 | Demoboard PMP9486

Texas Instruments LM5017 | Demoboard PMP9486

Quad Output, Highly Efficient Fly-Buck for Isolated Gate Drivers in Inverters - Reference Design

Overview

TopologyFlyBuck (Double Buck)
Input voltage20-40 V
Output 114.5 V / 0.1 A
Output 29 V / 0.1 A
IC revisionE1

Description

PMP9486 is a four output Fly-Buck converter for driving isolated driver stages (GND wrt high side sources) in DC/AC section of high frequency commercial or residential inverters (eg. solar micro inverters) using the LM5017 regulator IC. The design accepts an input voltage of 20Vin to 40Vin DC (from single panel in micro inverters or 12V/24V batteries) and provides isolated outputs of 14.5V, 9V @100mA (referenced to same ground). It features a small size and is an inexpensive and more efficient solution for using Fly-Back or Push-Pull converters. High efficiency of 88% is acheived at 100mA load on each of the outputs.

Features

  • Simple, low BOM-count, and low-cost design
  • No external loop compensation
  • Off the shelf magnetics
  • Transient protect with no clamping circuitry
  • Efficiency of 88% at 100mA load on each outputs
  • Removes the need for external adapters in inverters

More information

Products

Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
VIN
VOut1(V)
IOut1(mA)
VOut2(V)
IOut2(mA)
VOut3(V)
IOut3(mA)
VOut4(V)
IOut4(mA)
Vbuck(V)
L(µH)
NPRI : NSEC
ISAT(A)
LS(µH)
VT(V (AC))
fswitch(kHz)
Mount
L(mm)
W(mm)
H(mm)
Samples
750314851
WE-IBTI Isolated Buck Transformers, 14 - 40 V (DC), 14 V
Simu­lation
Downloads8 files

EDA models: Components ZIP

CAD files ZIP

Electric models ZIP

Download all 8 files as zip archive
ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-IBTI Isolated Buck Transformers
Input Voltage 14 - 40 V (DC)
Output Voltage 114 V
Output Current 1100 mA
Output Voltage 25 V
Output Current 250 mA
Output Voltage 314 V
Output Current 350 mA
Output Voltage 45 V
Output Current 450 mA
Buck Voltage10.2 V
Inductance68 µH
Turns Ratio1.83:1.67:1:1.67:1 
Saturation Current1.8 A
Leakage Inductance1.2 µH
Insulation Test Voltage4000 V (AC)
Switching Frequency 300
MountSMT 
Length17.78 mm
Width26.1 mm
Height13.8 mm