P ulsed loads Part 2 Presented by Sanjay Pithadia SEM Industrial Systems Medical Sector Challenge to Solve Floating the regulators to support high voltages 2 Need of Floating Regulators ID: 701836
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Slide1
Designing High-Voltage, Programmable Power Supply for driving High-current Pulsed loadsPart - 2
Presented by: Sanjay Pithadia
SEM – Industrial Systems, Medical SectorSlide2
Challenge to Solve Floating the regulators to support high voltages
2Slide3
Need of Floating RegulatorsA linear regulator operates by using a voltage-controlled current source to force a fixed
voltage to appear at the regulator output
terminal.
The control circuitry must monitor (sense) the output voltage, and adjust the
current source
(as required by the load) to hold the output voltage at the desired value.Any regulator has datasheet specifications controlled by the semiconductor process.To operate the device safely without crossing the absolute maximum limits of the regulator, it needs some tricks to float the voltage levels.
3Slide4
It is NOT a new concept!4
Positive Floating
Regulator using µA723
LDO & Op-amp have to be high-voltageSlide5
Designing the floating regulator circuitGround Pin Current is provided in the datasheet of regulator.
5
TPS7A47
TPS7A30Slide6
6DC Amplifier for Floating the Regulator
Control Voltage
(varied from 0V to 10V)Slide7
7
Negative Regulator – Virtual Ground Simulation Results
Control Voltage
(varied from 0V to 10V)Slide8
TIDA-01371 is available on TI.com8
Visit
www.ti.com/tool/TIDA-01371
to find design resources (Gerbers, Schematics and more).Slide9
TI Information – Selective Disclosure