對于寄生電感引起的輸入瞬間負(fù)壓，一般有三種應(yīng)對方案。首先，可以通過減小開關(guān)速度來降低影響，減小開關(guān)速度能降低電流變化速率di/dt，瞬間負(fù)壓幅度也就會下降。但這樣處理有副作用，降低開關(guān)速度就會增加轉(zhuǎn)換時間，所以會增加開關(guān)損耗，而在一些應(yīng)用中如果對響應(yīng)時間有要求，降低開關(guān)速度的方法就未必適合。
種方法是盡可能優(yōu)化PCB布局布線，減小寄生參數(shù)，從而減小負(fù)壓峰值，這是系統(tǒng)設(shè)計中常見的方法，但需要硬件工程師有非常豐富的設(shè)計經(jīng)驗，而在一些設(shè)計條件限制下，也可能無法優(yōu)化PCB布局布線
第三種方法是選擇抗干擾能力強的器件，例如納芯微電子新推出的同相雙通道高速柵極驅(qū)動器NSD1025。NSD1025通過優(yōu)化輸入端的ESD結(jié)構(gòu)，能夠承受-10V的輸入電壓，相比其他競品驅(qū)動，NSD1025更能應(yīng)對常見應(yīng)用場景的瞬態(tài)負(fù)脈沖，有更好的可靠性。
經(jīng)驗豐富的工程師通常會同時考慮三種抗擾方案，然后根據(jù)應(yīng)用約束來達(dá)到選擇。但選擇抗干擾能力強的器件，無疑能為整個系統(tǒng)的設(shè)計帶來更多的容錯空間與選擇余地，所以也就成為工程師在系統(tǒng)設(shè)計時候的步。
除了耐受負(fù)壓能力強，NSD1025還提供欠壓鎖定功能，保持輸出低電平直到電源電壓進(jìn)入工作范圍內(nèi)，而高低閾值之間的遲滯功能也提供了更出色的抗干擾能力。非常適合電源系統(tǒng)、電機控制器、線性驅(qū)動器和GaN等寬帶隙功率器件驅(qū)動等應(yīng)用場景。
在NSD1025之后，納芯微還將推出600V高低邊驅(qū)動器，以及專為GaN設(shè)計的600V高低邊驅(qū)動芯片。可為工程師在工業(yè)電源、電機驅(qū)動等應(yīng)用中的抗干擾設(shè)計，帶來更好的解決方案。
Omron C500-OD411
Network Card 03-0033-D00 3031 8-bit ISA PC/ XT 18.867
Hard Drive SCSI Quantum VP31080 QM31080SN-S RevB
SCSI Hard Drive Quantum VP32170W QM32170SN-SWAD RevA
Motherboard Socket7 Vtech/PcPartner MB500N 35-8212-32
Motherboard Socket7 Gigabyte GA586VX Rev3.33 430VX 3ISA
Motherboard Socket7 Gigabyte GA586VX Rev3.3 430VX 3ISA
Motherboard Socket7 Gigabyte GA586VX Rev3.34 430VX 3ISA
LI-020 ARCnet 8-bit ISA IBM PC/XT/AT UM9065L TC3068A
Equinox Megaport 8CS 910168/A 8-port Serial ISA Card RJ
Motherboard 486 486VL ISA Micro Industries Centigram
Caliper CP-60B CP60B QIC QIC36 QIC-36 SCSI Tape Drive
SCSI Hard Disk Quantum Fireball SE SE32S012 Rev 01-B
SCSI Hard Disk Quantum Fireball SE SE32S011 Rev 01-B
Teknor TEK-CPCI 1003 SBC Pentium
Ramix PMC663 PMC Dual 100/10 Ethernet Card 700462
HDD Disk Quantum VP31110 CL11S101-03-G-C HP A2084-60013
SCSI Hard Disk ST32430N Seagate Hawk 9B1001-078 DELL
SCSI Hard Disk Seagate ST34572W 9J6002-037 242606-001
PPC/PMC-8260/DS1-H110 PowerQUICC II MPC8260 DS/1 Force
SCSI Hard Disk IBM DDRS-39130 22L0211 LVD/SE E182115
SCSI Hard Disk 50-pin Conner CFP1080S GTS03 8AS046
SCSI Hard Disk 50-pin Conner CP30540 CPT04 148286-001
SCSI Hard Disk Seagate ST32171W 9C6011-030 242604-001
SCSI Hard Disk Seagate ST32171W
PPC/PMC-8260 MPMC8260 01-W3514F-01E 01-W3628F-01A
SCSI Hard Disk Seagate ST34572W 9J6002-010 A-02-9847-2
Lucent T8100 CPCI Eval Board RevB Ambassador M-T-8105
486 Motherboard MiniEISA-486AS EISA DX4-100 32 MB 256K
07L9196 IBM Dual CPU Card 35L0817 Gemini DD5.0
09P1162 18P1471 18P1470 34L9618 SM390HGSFN30G20 IBM
ASUS P/I-P6NP5 Pentium Pro MediaBus Motherboard Rev1.41
ASUS P/I-P6NP5 Pentium Pro MediaBus Motherboard Rev1.3
Octal II Card SULCUS Squirrel POS D71051C 8-Port Serial
Data Translation 05206 DT26216-SE DT5727-SE-PGH ISA Crd
DigiChannel Connection Box PC/16i MC/16i 16 DB25
Motherboard Super Socket7 ASUS * P5A-B * 1.03/500/sound
486 Motherboard Small Tiny Zida Tomato 4DPS 2.1 PCI SIS
Motherboard Pentium Soyo SY-5EH ETEQ AGP ISA S-Socket7
Motherboard Pentium QDI P51430HX-280T2 Frontier I V1.0
Motherboard Athlon Skt AM2 ASUS M2N-E w/ 64 X2 3800 CPU
Matrox MGA-MYST/RRSTC MY220P/BYZ4C Rainbow Runner
Base Systems Motherboard V20 Turbo 12MHz IBM PC/XT 1.44
Motherboard Pentium Dual 370 ABIT BP6 V1.0 440BX 443BX
8-bit Video Card Orchid Designer D-VGA IBM PC/XT ET3000
SCSI Controller Card IBM PC/XT 8-bit ISA Procom CC-8
ATI Rage128 PCI Card 109-57400-00 600-7055-A 820-1012-A
MCA Adapter Card Intervoice Fonetower 250046-E 100090
IBM POS Motherboard 31L3189 02L1625 4694 4614 A738-E
M701 Pentium Pro Motherboard 4 ISA 4 PCI Intel 440BX BX
24R2565 IBM Power Supply Delta DPS-225GB A 225W ATX PS
DEC Vax MicroVax 3100 54-18856-04 KA41-D MV3100/20E MB
SCSI Hard Disk Quantum ProDrive 105S 910-10-9403 50pin
SCSI Hard Disk 50-pin Quantum ProDrive 1080S
SCSI Hard Disk Seagate Hawk ST12400N 949001-026 Q-01-94
Wangtek 6130FS SCSI DAT Tape Drive
Informtech 486 Motherboard VLB Socket3 IT486SMVG DX4
SCSI Hard Disk Quantum XP334300W AT43W011-05-G RevF
ProTech 4066A PCI 8-port Serial Card RS-232 PCI8S650
Magicard Controller ISA Card Ocean Systems 3461-2002-00
Wicat 150WS Z80 Z8002 2716 EPROM Rare Chip Graphics CPU
Wicat 150WS Graphics Video Card 1982 Intel D8275
Wicat 150WS 1982 Z80 MultiBUS 6522 S150 I/O Controller
Wicat 150WS 1982 Z80 MultiBUS Memory Card TMS4164 TMM
Wicat 150WS 1982 Z80 MultiBUS MFM Disk Controller Card
Canon Canonical H04524-002 030-0980-002 Network Card
Quantum ProDrive 40S SCSI Hard Drive 50-pin 940-40-9402
Hard Drive Quantum Q250 SCSI Apple 40MB 50-pin 76-45004
LaserMaster ColorTalk II ISA Controller ColorTalkII LC2
Motherboard DASN1CMB6D0/D 5325301541 Snap Server 4400
Control Systems Hostess ISA Card quad RS-232 Serial
Hard Drive Western Digital Caviar 2850 99-004178-014 WD
Hard Disk Drive Conner FK9LJYJ CFS541A STY04 HDD
HD Drive Western Digital WD Caviar 14300 AC14300-00RTT2
Hard Disk Drive Fujitsu MPF3102AT CA05423-B321 CAVA01
Epox EP-5BVPXB Socket7 Motherboard ISA Rev 1.3 Via VPX
QDI P51430TX P5I430TX Titanium 1B+ Socket7 Motherboard
KM-S4-1 486 Motherboard Small Tiny PCI Jamicon U6923 MB
SCSI Hard Disk 50-pin Fujitsu M2266SA 5.25 FH
SCSI Hard Disk 50-pin Seagate ST4766NV 94191-766 5.25FH
SCSI Hard Disk 50-pin DSP3105 RH27A-YF 3.5
Sealevel SeaLink REL-16 8-bit ISA Relay Control 3095A
Oki MICROLINE 184 Turbo 9-pin Dot Matrix Printer Serial
HP Tape drive 20/40 Gb DAT 40x6 C5717C Autoloader DDS4
Intellistation Motherboard 01K4345 713527-601 28L497
IBM 59P5191 Barnacle GA1 Quad Xeon Planar Motherboard
Hard Drive SCSI Quantum Lightning LT54S011 04-H 540S
Hard Drive SCSI Fujitsu M2952SYU CA01407-B313 095506X30
在線咨詢 
