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  1. 齐乐娱乐老虎机官网 >  解决方案 >  [齐乐娱乐老虎机官网] Renesas ISL71043M耐辐射单端电流模式PWM控制方案

[齐乐娱乐老虎机官网] Renesas ISL71043M耐辐射单端电流模式PWM控制方案

关键词:电源管理 PWM控制器 耐辐射 开关电源 ISL71043M 时间:2019-05-29 12:20:13       来源:齐乐娱乐老虎机官网

Renesas公司的ISL71043M是耐辐射单端电流模式PWM控制器,可工作在高达13.2V,工作电流2.9mA,典型起动电流90μA,可调工作频率到1MHz,具有50ns上升和下降时间的1A驱动电流.最大占空比100%,1.5MHz带宽误差放大器,限流阈值±3%,特性化辐射电平,低丢失率(LDR) (0.01rad(Si)/s)为30krad(Si),单粒子烧毁LET 43MeV•cm2/mg,工作温度-55℃到 +125℃,主要用在电流模式开关电源,隔离降压和反激稳压器,升压稳压器,马达方向和速度控制以及大电流FET驱动器的控制.本文介绍了ISL71043M主要特性,框图和反激应用框图,应用电路图和ISL71043M SET评估板电路图以及评估板ISL71043MEVAL1Z主要特性和指标,电路图,材料清单和PCB设计图.

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

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

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

ISL71043M主要特性:

• 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 modecontrol
• 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 foraccurate deadtime/maximum duty cycle control
• 1.5MHz bandwidth error amplifier
• Tight tolerance voltage reference over line, load, andtemperature
• ±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

ISL71043M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

图1.ISL71043M框图

图2.ISL71043M反激应用框图

图3.ISL71043M 48V输入双输出反激电路图

图4.ISL71043M升压转换器

图5.ISL71043M SEB/L评估板电路图

图6.ISL71043M SET评估板电路图

评估板ISL71043MEVAL1Z

The ISL71043MEVAL1Z evaluation platform is designed to evaluate the ISL71043M and ISL71040M in a flybackpower supply configuration.

The ISL71043M is a radiation tolerant drop-in replacement for the popular 28C4x and 18C4x PWM controllerssuitable for a wide range of power conversion applications including boost, flyback, and isolated outputconfigurations. This evaluation board is a flyback power supply. The board features up to 13.2V VDD operation,low operating current, 90μA typical start-up current, adjustable operating frequency to 1MHz, and high peakcurrent drive capability with 50ns rise and fall times.

The ISL71040M is a low-side driver designed to drive enhancement mode Gallium Nitride (GaN) FETs in isolatedtopologies and boost type configurations. The ISL71040M operates with a supply voltage from 4.5V to 13.2V andhas inverting (INB) and non-inverting (IN) inputs to satisfy requirements for both inverting and non-inverting gate drives with a single device. The ISL71040M has a 4.5V gate drive voltage (VDRV) that is generated using aninternal regulator, which prevents the gate voltage from exceeding the maximum gate-source rating ofenhancement mode GaN FETs. The gate drive voltage also features an Undervoltage Lockout (UVLO) protectionthat ignores the inputs (IN and INB) and keeps OUTL turned on, ensuring that the GaN FET is in an OFF statewhen VDRV is below the UVLO threshold. The ISL71040M inputs can withstand voltages up to 14.7V regardless ofthe VDD voltage, which allows the ISL71040M inputs to be connected directly to most PWM controllers. The splitoutputs of the ISL71040M offer the flexibility to independently adjust the turn-on and turn-off speeds by addingadditional impedance to the turn-on and turn-off paths.

评估板ISL71043MEVAL1Z主要特性:

• 24W flyback power supply
• Option to power the ISL71043M and ISL71040M using the auxiliary winding on a flyback transformer orseparate power supply
• VOUT within 1% of 12V with 0A to 2A load step
• Tight line/load regulation: 0.003%/0.16%
评估板ISL71043MEVAL1Z指标:
• Wide VIN range single: 22V to 36V
• Wide VDD range single: 7.5V to 13.2V
• IOUT range: 0A to 2A

图7.评估板ISL71043MEVAL1Z外形图:顶视图


图8.评估板ISL71043MEVAL1Z外形图:底视图

图9.评估板ISL71043MEVAL1Z电路图
评估板ISL71043MEVAL1Z材料清单:




图10.评估板ISL71043MEVAL1Z PCB设计图:顶层丝印

图11.评估板ISL71043MEVAL1Z PCB设计图:底层丝印

图12.评估板ISL71043MEVAL1Z PCB设计图:顶层

图13.评估板ISL71043MEVAL1Z PCB设计图:第二层

图14.评估板ISL71043MEVAL1Z PCB设计图:第三层

图15.评估板ISL71043MEVAL1Z PCB设计图:底层
详情请见:
https://www2.renesas.cn/cn/zh/www/doc/datasheet/r34ds0003eu-isl71043m.pdf
https://www2.renesas.cn/cn/zh/www/doc/guide/r12uz0044eu-isl71043meval1z-user-manual.pdf
r34ds0003eu-isl71043m.pdf
r12uz0044eu-isl71043meval1z-user-manual.pdf

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