plication Logreader", "Logreader:Delivered Trans/sec", @agent_name, @latest_delivered_transactions)  36:#distribution(dbo123v@&NT AUTHORITY\SYSTEM )tdbcc incrementinstance ("SQL Replication Logreader", "Logreader:Delivered Cmds/sec", @agent_name, @latest_delivered_commands)  36:#distribution(dbo123v@&NT AUTHORITY\SYSTEM )tdbcc setinstance ("SQL Replication Logreader", "Logreader:Delivery Latency", @agent_name, @delivery_latency)  36:#distribution(dbo123v@&NT AUTHORITY\SYSTEM )tdbcc incrementinstance ("SQL Replication Agents", "Running", "Distribution", 1) ~ SYSTEMNT AUTHORITYWIN-TD6RIV90U6V  @Replication Distribution History &NT AUTHORITY\SYSTEM :6;d#distribution(dbo) 123v@&NT AUTHORITY\SYSTEMt@dbcc addinstance ("SQL Replication Distribution", @agent_name)  :6;d#distribution(dbo123v@&NT AUTHORITY\SYSTEM )tdbcc setinstance ("SQL Replication Distribution", "Dist:Delivery Latency", @agent_name, @last_delivery_latency)  :6;d#distribution(dbo123v@&NT AUTHORITY\SYSTEM )tdbcc incrementinstance ("SQL Replication Agents", "Running", "Distribution", -1)  SYSTEMNT AUTHORITYWIN-TD6RIV90U6V  @Replication Distribution History &NT AUTHORITY\SYSTEM :6;q#distribution(dbo) 123v@&NT AUTHORITY\SYSTEMtdbcc incrementinstance ("SQL Replication Agents", "Running", "Distribution", 1) ~ SYSTEMNT AUTHORITYWIN-TD6RIV90U6V  @Replication Distribution History &NT AUTHORITY\SYSTEM :73#distribution(dbo) 123v@&NT AUTHORITY\SYSTEMt@dbcc addinstance ("SQL Replication Distribution", @agent_name)  :73#distribution(dbo123v@&NT AUTHORITY\SYSTEM )tdbcc setinstance ("SQL Replication Distribution", "Dist:Delivery Latency", @agent_name, @last_delivery_latency)  :73#distribution(dbo123v@&NT AUTHORITY\SYSTEM )tdbcc incrementinstance ("SQL Replication Agents", "Running", "Distribution", -1)  SYSTEMNT AUTHORITYWIN-TD6RIV90U6V  @Replication Distribution History &NT AUTHORITY\SYSTEM :73#distribution(dbo) 123v@&NT AUTHORITY\SYSTEMtdbcc incrementinstance ("SQL Replication Agents", "Running", "Distribution", 1) ~ SYSTEMNT AUTHORITYWIN-TD6RIV90U6V  @Replication Distribution History &NT AUTHORITY\SYSTEM :8l#distribution(dbo) 123v@&NT AUTHORITY\SYSTEMt@dbcc addinstance ("SQL Replication Distribution", @agent_name)  :8l#distribution(dbo123v@&NT AUTHORITY\SYSTEM )tdbcc setinstance ("SQL Replication Distribution", "Dist:Delivery Latency", @agent_name, @last_delivery_latency)  :8l#distribution(dbo123v@&NT AUTHORITY\SYSTEM )tdbcc incrementinstance ("SQL Replication Agents", "Running", "Distribution", -1)  SYSTEMNT AUTHORITYWIN-TD6RIV90U6V  @Replication Distribution History &NT AUTHORITY\SYSTEM :8}#distribution(dbo) 123v@&NT AUTHORITY\SYSTEMtdbcc addinstance ("SQL Replication Logreader", @agent_name)  SYSTEMNT AUTHORITYWIN-TD6RIV90U6V  >Repl-LogReader-0-jfpaopaoche2-7 &NT AUTHORITY\SYSTEM 38#distribution(dbo) 123+v@&NT AUTHORITY\SYSTEMtdbcc incrementinstance ("SQL Replication Logreader", "Logreader:Delivered Trans/sec", @agent_name, @latest_delivered_transactions)  38#distribution(dbo123,v@&NT AUTHORITY\SYSTEM )tdbcc incrementinstance ("SQL Replication Logreader", "Logreader:Delivered Cmds/sec", @agent_name, @latest_delivered_commands)  38#distribution(dbo123-v

SG3525ĴʿصԴ

ʱ:2011-09-06 Դ:δ֪ ༭:Զ : : С

ժҪ SG3525 һӦù㷺PWM ɿоƬ ڽSG3525 ĹصԼIGBT ģĻϣ ϸ˻SG3525 ΪƺĵĴʿԴơõԴ·ðʽ· Ӧ÷ֶκƼʵֵѹȶ õԴõܡ

1

ĸٷչ 豸վκε豸벻ɿĹԴ ԵԴҪҲԽԽߣ صԴЧʡȷڴͳľԵԴơڿصԴЩص㣬 ˵ĵ豸еõ㷺Ӧã ȡʽԵԴ

ͼ1·ԭͼ

ͼ1·ԭͼ

Դģðʽ·ͼ1 ʾ ཻ羭EM I ˲˲ ˽ԴĵŸţ ͬʱֹصԴгŵԴˡپʽ·˲·ֱѹPN 䡣PN ֮һСѹ޸еݣ 𵽸Ƶ˲áʽʱ任·ȫʽʱ任·ƣ ֻʿȵĵC1 C2档ʵӦΪߵݵԼѹ̶ȣ C1 C2 ɶֵݲɵĵ顣C1C2 ѡֵӦܴ ԼСѹƲϵ͵Ƶ񵴡ڶƣ C1C2 ֵ޴ ΪʹѹƲﵽ涨Ҫ õֵһ㹫ʽ ,

ʽУ IL Ϊص V L ΪصѹV M Ϊ뽻ѹֵ f Ϊ뽻Ƶʣ VUΪƲѹֵ

һϵļ㹫ʽ õҪĵݼֵȽϴ ʵȡĵӦһЩ ˵ѹС Ҳڶ˲ʱӴݣ㵽ùʽĵֵҲСC1 C2 ʵ˾̬ʱѹ ʹV A= V in/2

VT1ͨVT2ֹʱ Ϊͼ߷ C2 磬 ͬʱC1ͨV T1 ŵ磻 V T 2 ͨV T 1 ֹʱ Ϊͼʵ߷ C1 磬 ͬʱC2 ͨV T 2 ŵ硣

V T1 ͨV T 2 ֹʱV T 2 ˳ܵĵѹΪֱѹV inIGBT ļ- 伫䲢RC 磬 ͿعܵĿӦ СIGBT ضϲļѹ ʵáõʽ· ͨLC ˲· ƵƲ СֱѹĵƵ񵴡LC ˲·еĵɶѹĵݲɣ ߵԴĿɿԣ ʹֱѹƽȡ

3PWM оƬSG3525 Ĺص

SG3525 һȫͨǿĵƬPWM оƬúƵƿƷ ʺڸֿصԴնĿơҪܰ׼ѹ·ŴPWM ȽǷѹ·Ƶ·ʽSG3525 ĻΧ·ͼͼ2 ʾоƬͬ͵оƬȾͻص㡣

ͼ2SG3525 ĻΧͼ

ͼ2SG3525 ĻΧͼ

1 Ƶʿɵ һͨıCT R T ͼ2 ֵPWM Ƶʣ Ƶʵļ㹫ʽΪ

2 ʱɵ ͨR D ɸıʱĴС ֹŵűֱͨ

3 PWM źŷܣ 10 ŵѹ2. 5V ʱ ɼʱ ֹֹѹȹʱԵ·Σ

4 оƬƵΪ100Hz 400kHz3 Ϊͬˣ ΪSG3525 ṩ㡣

5 · Ƚķ˼ƶоƬ8, CõڲĻ׼ѹV refɺԴ磬 ﵽ2. 5V ʱt= 2.5V /50uA C, ռձС50% 仯

һ
(2)
66.7%
һ
(1)
33.3%
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