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PWM5034-7

Description
Switching Regulator/Controller, Current/voltage-mode, 0.05A, 1000kHz Switching Freq-Max, CMOS, PDFP24,
CategoryPower/power management    The power supply circuit   
File Size225KB,19 Pages
ManufacturerAeroflex
Websitehttp://www.aeroflex.com/
Download Datasheet Parametric View All

PWM5034-7 Overview

Switching Regulator/Controller, Current/voltage-mode, 0.05A, 1000kHz Switching Freq-Max, CMOS, PDFP24,

PWM5034-7 Parametric

Parameter NameAttribute value
MakerAeroflex
package instructionDFP, FL24,.3
Reach Compliance Codeunknown
control modeCURRENT/VOLTAGE-MODE
JESD-30 codeR-PDFP-F24
Number of terminals24
Maximum operating temperature70 °C
Minimum operating temperature
Maximum output current0.05 A
Package body materialPLASTIC/EPOXY
encapsulated codeDFP
Encapsulate equivalent codeFL24,.3
Package shapeRECTANGULAR
Package formFLATPACK
Certification statusNot Qualified
surface mountYES
Maximum switching frequency1000 kHz
technologyCMOS
Temperature levelCOMMERCIAL
Terminal formFLAT
Terminal pitch1.27 mm
Terminal locationDUAL
Standard Products
PWM5032 RadHard High Speed PWM Controller
Radiation Tolerant
www.aeroflex.com/PWM
April 22, 2010
FEATURES
Radiation performance
- Total dose
1 Mrad (Si), Dose rate = 50 - 300 rads(Si)/s
- SEL:
Immune to 100 MeV-cm
2
/mg
- SEU:
Immune up to 20 MeV-cm
2
/mg
(Upsets found were benign and non-stressful to the PWM or supporting electronic components)
CMOS low power design
Sleep & enable control lines
Optimized for applications: buck, boost, flyback, forward and center tapped push-pull converters
Supports current mode or voltage mode operations
Selectable 50% / 100% duty cycle
Under-Voltage lockout with hysteresis
Dual ±1Amp peak totem pole outputs
1 MHz maximum – user selectable
Low RO error amp
Auxiliary op amp with shut down pin
Power OK indicator
PWM5034 - Same as PMW5032 except straight leads
Designed for commercial, aerospace and high reliability space applications
Ceramic 24-lead, hermetic package, .6L x .3W x .13H
- PWM5032 Gull Wing leads
- PWM5034 Straight leads
- Weight: 1.2 g max
Evaluation board available for test and evaluation. See Aeroflex Application Note AN5031-1
Available on DSCC SMD 5962-06251
NOTE: Aeroflex Plainview does not currently have a DSCC Certified Radiation Hardened Assurance Program
Developed in Partnership with JHU/APL and the Technology Application Group for the
Mars Technology Program; Part of NASA’s Mars Exploration Program
OVERVIEW AND GENERAL OPERATION
The chip is a fixed frequency Pulse Width Modulator based on the industry standard UC1843x Series with significant
enhancements in performance and functionality. The chip operates in either the voltage or current mode and can support a
wide variety of converter topologies.
Radiation hardened by design techniques ensure the chip’s outstanding radiation tolerance (>1MRads) while reducing
operating current by more than an order of magnitude over comparable parts.
The PWM5032 provides an under voltage lockout feature with hysteresis that also provides an output to indicate Power is
OK. An input called Sleep is used to power down the entire chip, the Enable input is used to shut down the
Oscillator / Output Drives, and the Soft input drives the Output to zero. There is also a signal input called ENAUX that is
used to disable the output to the auxiliary op-amp.
The dual output drivers are designed using a Totem Pole output capable of sinking and sourcing 50mA constant current and
peak currents up to 1 Amp to support a large variety of Power MOSFETs.
Additional features that boost the appeal and utility of the part are:
Dual break-before-make Totem Pole output stage is employed that virtually eliminates cross conduction and current
shoot through
Logic level input that allows the user to select either 50% or 100% maximum duty cycle operation
Improved oscillator stage that vastly increases waveform linearity and reduces output voltage error
Uncommitted on-board op-amp which can be used for signal conditioning, pulse feedback, or any other user defined
purpose
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