ISL71043M

Radiation Tolerant Single-Ended Current Mode PWM Controller

Product Status: Mass Production

OVERVIEW

The ISL71043M is a PWM controller suitable for a wide range of power conversion applications including boost, flyback, and isolated output configurations. Its fast signal propagation and output switching characteristics make this an ideal product for existing and new designs.

Features include up to 13.2V operation, 2.9mA operating current, 90µA typical start-up current, adjustable operating frequency to 1MHz and 1A current drive capability with 50ns rise and fall times.

The ISL71043M is offered in an 8 Ld SOIC package and is specified across the extended temperature range of -55°C to +125°C.

KEY FEATURES

  • 1A MOSFET gate driver
  • 90µA typical start-up current, 125µA maximum
  • Moisture Sensitivity Level (MSL) rating is 1
  • 35ns propagation delay current sense to output
  • Fast transient response with Peak Current mode control
  • 9V to 13.2V operation
    • Rising UVLO: 8.4V
  • Maximum duty cycle: 100%
  • Adjustable switching frequency to 1MHz
  • 50ns rise and fall times with 1nF output load
  • Trimmed timing capacitor discharge current for accurate deadtime/maximum duty cycle control
  • 1.5MHz bandwidth error amplifier
  • Tight tolerance voltage reference over line, load, and temperature
  • ±3% current limit threshold
  • Ni/Pd/Au-Ag lead finish (Tin (Sn) free)
  • Characterized radiation levels
    • Low Lose Rate (LDR) (0.01rad(Si)/s) : 30krad(Si)
    • Single event burnout LET 43MeV•cm2/mg

PARAMETRICS

Parameters
ISL71043M
Basic Information
Part Name
ISL71043M
Production Status
Mass Production
Topology
Single-Ended, Forward, & Boost
Topology Characteristic
Flyback
Control Mode
Peak Current Mode
UVLO Rising (V)
8.4
UVLO Falling (V)
7.6
VBIAS (max) (V)
30
No-Load Operating Current
2.9 mA
# of PWM Outputs
1
FET Driver Output Current Max
1 A
Max Duty Cycle (%)
100
Low Dose Rate (ELDRS) krad (Si)
30
SEL (MeV/mg/cm2)
43

Design Resources

Taking Advantage of GaN in Small Satellite New Space Applications

Taking Advantage of GaN in Small Satellite “New Space” Applications

Learn how Renesas GaN FETs allow for more efficient switching, higher frequency operation, reduced gate drive voltage, and smaller solution sizes in satellite applications.

Knowledge Base

Rad Tolerant Power FAQs

Find answers to common questions, support articles and development hints.


FAQs

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Learn about the Intersil radiation-tolerant plastic-package ICs designed to support the emerging field of small satellites.
2:56
Learn about the Intersil radiation-tolerant plastic-package ICs designed to support the emerging field of small satellites.

Evaluation Tools

ISL71040MEV1Z Radiation Tolerant Low-Side GaN FET Driver Eval Board

Evaluation Kit

ISL71040MEV1Z

The ISL71040MEV1Z evaluation platform is designed to evaluate the ISL71040M radiation tolerant low-side GaN FET driver.

ISL71043MEVAL1Z Radiation Tolerant Single-Ended Current Mode PWM Controller Eval Board

Evaluation Kit

ISL71043MEVAL1Z

The ISL71043MEVAL1Z eval board is used to evaluate the ISL71043M PWM controller and ISL71040M GaN FET driver in a flyback power supply configuration.

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