机载130 mJ激光照射器的脉冲驱动电源设计  

Design of a pulsed driver for LDA of airborne 130 mJ laser director

作　　者：郭俊超 韩耀锋[1] 张晓辉[1] 李龙骧[1] 王诚[1] 寿少峻[1] 马世伟[1] 孙翌乔 GUO Junchao;HAN Yaofeng;ZHANG Xiaohui;LI Longxiang;WANG Cheng;SHOU Shaojun;MA Shiwei;SUN Yiqiao(Xi’an Institute of Applied Optics,Xi’an 710065,China)

机构地区：[1]西安应用光学研究所,西安710065

出　　处：《激光杂志》2024年第9期14-18,共5页Laser Journal

摘　　要：针对机载130 mJ激光照射器对脉冲驱动电源的实际使用需求,设计了一款高可靠性、宽温度范围、小型化的脉冲驱动电源。采用了基于超低ESR储能单元的前级低功率充电、后级高功率脉冲放电的技术方案。详细设计中,防反及缓启电路采用双PMOS管的方式;BOOST升压式充电电路选用具有开关频率可调、逐周期电流限制的控制芯片CYT5022JVS;储能单元由多只超低ESR的高分子固态铝电解电容器并联构成;放电电路开关管选用两只2.3 mΩ导通内阻的IRF150P220并联来降低发热功率。为保证宽温工作范围,采用电压补偿的方式来解决高、低温下储能单元容值变化的问题。测试表明,驱动电源能够输出峰值160 A、脉宽230μs、频率25 Hz的脉冲电流,激光照射器在照射模式下单脉冲平均能量大于130 mJ,满足系统要求。Aiming to meet the actual demand of airborne 130 mJ laser director,a pulsed driver with for LDA with the characteristics of high reliability,wide work temperature range and miniaturization is designed.A overall scheme is a combination of energy storage unit with ultra-low equivalent series resistance,low power preceding stage charging circuit and backward stage discharging circuit with high power.In detailed circuits design,reverse direction protection and slow start circuits adopt a way with double PMOS.BOOST charging circuits’controlling IC is CYT5022JVS with the characteristics of adjustable switching frequency and cycle-by-cycle current limit.Energy unit includes some shunt-wound Polymer solid lithium electrolytic capacitors with ultra-low equivalent serial resistance(ESR).To reduce heating power,discharge circuits’switching tubes employ two IRF150P220s in parallel with on-resistance 2.3 mΩ.In order to adapt wide temperature range,charging voltage need to compensate because of capacitance change in high and low temperature.Tests show that pulsed driver can output a pulsed current with 160A peak value,230μs pulse width and 25 Hz frequency.The airborne laser director driven by this pulsed driver can output 130 mJ average pulsed energy,which can satisfy the needs of airborne optoelectronic system.

关 键 词：激光技术 驱动电源 BOOST变换器 储能单元 激光照射器 

分 类 号：TN248.1[电子电信—物理电子学]