Radiation Hardened, High Performance Industry Standard Single-Ended Current Mode PWM Controller
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扩展 ECAD 模块
概览
描述
The ISL78840ASEH, ISL78841ASEH, ISL78843ASEH, ISL78845ASEH, ISL78840ASRH, ISL78841ASRH, ISL78843ASRH, ISL78845ASRH are high-performance, radiation hardened drop-in replacements for the popular 28C4x and 18C4x PWM controllers suitable for a wide range of power conversion applications including boost, flyback and isolated output configurations. Fast signal propagation and output switching characteristics make these ideal products for existing and new designs. Features include up to 13.2V operation, low operating current, 90μA typical start-up current, adjustable operating frequency to 1MHz, and high peak current drive capability with 50ns rise and fall times.
特性
- Electrically screened to DLA SMD # 5962-07249
- QML qualified per MIL-PRF-38535 requirements
- 1A MOSFET gate driver
- 90μA typical start-up current, 125μA maximum
- 35ns propagation delay current sense to output
- Fast transient response with peak current-mode control
- 9V to 13.2V operation
- Adjustable switching frequency to 1MHz
- 50ns rise and fall times with 1nF output load
- Trimmed timing capacitor discharge current for accurate dead time/maximum duty cycle control
- 1.5MHz bandwidth error amplifier
- Tight tolerance voltage reference over line, load, and temperature
- ±3% current limit threshold
- Pb-free available (RoHS compliant)
- Radiation environment:
- High dose rate (50 - 300rad(Si)/s): 100krad(Si)
- Low dose rate (0.01rad(Si)/s): 100krad(Si)*
* Product capability established by initial characterization. The "EH" version is acceptance tested on a wafer-by-wafer basis to 50krad(Si) at low dose rate. (Applies to ISL7884xASEH only)
应用
应用
- Current mode switching power supplies
- Isolated buck and flyback regulators
- Boost regulators
- Direction and speed control in motors
- Control of high current FET drivers
设计和开发
软件与工具
软件与工具
| iSim:PE Offline Simulation TooliSim Personal Edition (iSim:PE) speeds the design cycle and reduces risk early in any project, identifying parts that can be used in current as well as next-generation designs.下载: | Simulator | 瑞萨电子 |
模型
ECAD 模块
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
产品选择
Processing table
器件号 |
Pkg. Type |
Carrier Type |
MOQ |
DLA SMD |
购买 / 样片 |
|---|---|---|---|---|---|
| SBDIP | Tray | 1 | |||
| CFP | Tray | 1 | |||
| SBDIP | Tray | 25 | 5962R0724904QPC | ||
| CFP | Tray | 25 | 5962R0724904QXC | ||
| SBDIP | Tray | 25 | 5962R0724904VPC | ||
| CFP | Tray | 25 | 5962R0724904VXC | ||
| 100 | 5962R0724904V9A | ||||
| DIE | 100 | 5962R0724904QXC | |||
| PDS | 450 | 5962R0724904QXC | |||
| DIE | 5 |
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