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萧昕腾

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[问答]

请问UCC25630的四个型号有什么区别?

这是ti官网上的UCC25630四个型号的对比表。

UCC256301UCC256302UCC256303UCC256304
TopologyHalf-Bridge,Resonant LLCHalf-Bridge,Resonant LLCHalf-Bridge,Resonant LLCHalf-Bridge,Resonant LLC
Control MethodCurrentCurrentCurrentCurrent
Vin(Max)(V)600600600600
Duty Cycle(Max)(%)50505050
Frequency(Max)(kHz)1000100010001000
Frequency(Min)(kHz)35353535
Operating Temperature Range(C)-40 to 125-40 to 125-40 to 125-40 to 125
Gate Drive(Typ)(A)0.60.60.60.6
FeaturesHV Start-up,Light Load Efficiency,Thermal Shutdown,Wide DC input,X cap discharge integratedHV Start-up,Light Load Efficiency,Thermal ShutdownLight Load Efficiency,Supports external bias,Thermal ShutdownHV Start-up,Light Load Efficiency,Thermal Shutdown,Wide AC input,Wide DC input,X cap discharge integrated
RatingCatalogCatalogCatalogCatalog
Approx. Price (US$)0.99 | 1ku0.95 | 1ku0.90 | 1ku0.95 | 1ku

可以看到UCC256304有“Wide AC和DC input”,而UCC256301只有“Wide DC input”。
但我在查看两者datasheet后发现,AC输入范围都是85~264V,似乎并没有区别。

请问两者的区别究竟在哪里?
除此之外,这四个型号还有哪些区别呢?

回帖(2)

云甫太

2019-4-4 10:37:09
UCC256301 accommodates  PFC to start up before LLC start up;
UCC256302 accommodates systems where there is no AC source or handling DC signal; PFC needs to be on all the time
UCC256303 can be used where system has an external bias; PFC needs to be on all the time
UCC256304 accommodates LLC to start up before PFC start up
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冯金妮

2019-4-4 10:50:45
引用: shuijun556 发表于 2019-4-4 11:53
UCC256301 accommodates  PFC to start up before LLC start up;
UCC256302 accommodates systems where there is no AC source or handling DC signal; PFC needs to be on all the time
UCC256303 can be used where system has an external bias; PFC needs to be on all the time

Hi
     详细差异建议查看UCC25630X系列选型指导:
    www.ti.com.cn/.../slyt728.pdf
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