HS-1825AEH

Radiation Hardened High-Speed, Dual Output PWM

Product Status: Mass Production

OVERVIEW

The radiation hardened HS-1825ARH, HS-1825AEH pulse width modulator is designed to be used in high frequency switched-mode power supplies and can be used in either current-mode or voltage-mode. It is well suited for single-ended boost converter applications.

Device features include a precision voltage reference, low power start-up circuit, high frequency oscillator, wide-band error amplifier and fast current-limit comparator. The use of proprietary process capabilities and unique design techniques results in fast propagation delay times and high output current over a wide range of output voltages.

Constructed with the Intersil radiation hardened Silicon Gate (RSG) Dielectric Isolation BiCMOS process, the HS-1825ARH, HS-1825AEH have been specifically designed to provide highly reliable performance when exposed to harsh radiation environments.

KEY FEATURES

    "
  • Electrically screened to DLA SMD # 5962-99558
  • QML qualified per MIL-PRF-38535 Requirements
  • Radiation environment
  • Maximum total dose: 300 krad(SI)
  • Vertical architecture provides low dose rate immunity
  • DI RSG process provides latch-up immunity
  • Low start-up current: 100µA (Typical)
  • Fast propagation delay: 80ns (Typical)
  • 12V to 30V operation
  • 1A (peak) dual output drive capability
  • 5.1V reference
  • Undervoltage lockout
  • Programmable soft-start
  • Switching frequencies to 500kHz
  • Latched overcurrent comparator with full cycle restart
  • Programmable leading edge blanking circuit"

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
HS-1825AEH
Basic Information
Production Status
Mass Production
Class
V
DLA SMD
5962-99558
High Dose Rate (HDR) krad (Si)
300
Low Dose Rate (ELDRS) krad (Si)
50
SEL (MeV/mg/cm2)
SEL free
SMD URL
Qualification Level
QML Class V (space)
Temperature Range
-55 to +125

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