IC reference design search
IC manufacturers Texas Instruments

IC manufacturers (103)

reference designSN6505B | Demoboard PMP30555

Texas Instruments SN6505B | Demoboard PMP30555

3.5W isolated push-pull reference design for auxiliary power supply

Overview

TopologyPush-Pull Converter symmetrical isolated
Input voltage24 V
Output 115 V / 0.12 A
Output 25 V / 0.35 A
IC revision1

Description

This reference design is an isolated open-loop push-pull with “cascode” FETs that finds its typical application in isolated gate drive supply. The cascode connection extends the input voltage range of SN6505B from 5 V to 24 V, and two outputs supply 15 V at 120 mA and 5 V at 350 mA. Its 2-mm transformer makes the solution ultra-thin.

Features

  • Push-pull driver for transformers
  • Wide input voltage range: 2.25 V to 5.5 V
  • High output drive: 1 A at 5 V supply
  • Low RON 0.25 Ω max at 4.5 V supply
  • Ultra-low EMI
  • Spread spectrum clocking
  • Precision internal oscillator options: 160 kHz (SN6505A) and 420 kHz (SN6505B)
  • Synchronization of multiple devices with external clock input
  • Slew-rate control
  • 1.7 A Current-limit
  • Low shutdown current: <1 μA
  • Thermal shutdown
  • Wide temperature range: –55°C to 125°C
  • Small 6-Pin SOT23 (DBV) package
  • Soft-start to reduce In-rush current

Typical applications

  • Medical instruments
  • Isolated power supply for CAN, RS-485, RS-422, RS-232, SPI, I2C, low-power LAN / Distributed supplies / Low-noise filament supplies
  • Process control / Precision instruments
  • Telecom supplies / Radio supplies

More information

Products

Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
C
Tol. C
VR(V (DC))
Size
Operating Temperature
DF(%)
RISO
Ceramic Type
L(mm)
W(mm)
H(mm)
Fl(mm)
Packaging
VIN
fswitch(kHz)
VOut1(V)
IOut1(mA)
VOut2(V)
IOut2(mA)
VOut3(V)
IOut3(mA)
VOut4(V)
IOut4(mA)
∫Udt(Vs)
L(mH)
NPRI : NSEC
Type of Insulation
VT(V (AC))
Mount
Samples
885012207026
WCAP-CSGP MLCCs 10 V(DC), 10 µF, ±10%
Simu­lation
Downloads9 files

EDA models: Components ZIP

CAD files ZIP

Electric models ZIP

Download all 9 files as zip archive
ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 10 V(DC)
Capacitance10 µF
Capacitance±10% 
Rated Voltage10 V (DC)
Size0805 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor10 %
Insulation Resistance0.01 GΩ
Ceramic TypeX7R Class II 
Length2 mm
Width1.25 mm
Height1.25 mm
Pad Dimension0.5 mm
Packaging7" Tape & Reel 
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
750317843
WE-PPTM Push-Pull Tiny Multi-Output Transformers, –, –
Simu­lation–
Downloads6 files

EDA models: Components ZIP

Electric models ZIP

Download all 6 files as zip archive
ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-PPTM Push-Pull Tiny Multi-Output Transformers
–
–
–
Size1212 
Operating Temperature -40 °C up to +125 °C
–
–
–
Length11.63 mm
Width12.6 mm
Height1.98 mm
–
–
Input Voltage 24 V (DC)
Switching Frequency 400
Output Voltage 116.7 V
Output Current 160 mA
Output Voltage 25.8 V
Output Current 2175 mA
Output Voltage 3-5.8 V
Output Current 3175 mA
Output Voltage 4-16.7 V
Output Current 460 mA
Voltage-µSecond35 Vs
Inductance1.47 mH
Turns Ratio8.25:5.75:1:1 
Type of InsulationFunctional 
Insulation Test Voltage1500 V (AC)
MountSMT