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參數資料
| 型號： | PWM5031-001-1S |
| 元件分類： | 穩壓器 |
| 英文描述： | 1 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, CDSO24 |
| 封裝： | 0.600 X 0.300 INCH, 0.130 INCH HEIGHT, HERMETIC SEALED, CERAMIC, SOP-24 |
| 文件頁數： | 1/19頁 |
| 文件大小： | 236K |
| 代理商： | PWM5031-001-1S |
SCD5031 Rev L
FEATURES
Radiation hardness:
- Total dose 1MRad(Si)
- Single event latchup (SEL) immune to 100MeV-cm2/mg
- Single event upset (SEU) 20MeV-cm2/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, industrial and aerospace applications
Ceramic 24-lead, hermetic package, .6L x .3W x .13H
- PWM5031/5032 Gull Wing leads
- PWM5034 Straight leads
- Weight: 1.2 g max
- Contact factory for die availability
Evaluation board available for test and evaluation. See Aeroflex Application Note AN5031-1
DSCC SMD: 5962-06251 approved
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 PWM5031 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
PWM5031 / PWM5032 RadHard High Speed PWM Controller
Standard Products
www.aeroflex.com/RadHard
November 3, 2008
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| PWM5034-S | 1 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, CDSO24 |
| PWM5032-7 | 1 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, CDSO24 |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| PWM5031-7 | 制造商:AEROFLEX 制造商全稱:AEROFLEX 功能描述:RadHard High Speed PWM Controller |
| PWM5031-I | 制造商:AEROFLEX 制造商全稱:AEROFLEX 功能描述:RadHard High Speed PWM Controller |
| PWM5031-S | 制造商:AEROFLEX 制造商全稱:AEROFLEX 功能描述:RadHard High Speed PWM Controller |
| PWM505 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| PWM-50-59 | 制造商:Brady Corporation 功能描述:REFILL PAGES - LEGEND: 50-59 |
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