谢谢你的回应。电压水平和铜rrents are acceptable for this SLG59M1606 but unfortunately reverse current blocking works only when device is off, so you will need to switch power rail manually. For your application we can suggest you to use dual channel SLG59M1639 for 4.3V @3A and SLG59M1748 for 5V @1A. Please see attached schematic for your reference. With this load switches 1639 will automatically detect reverse voltage from 5V. I would also recommend you to read this AN of how to use our LS's in such applications as yourshttps://www.dialog-semicondiondiondum/an-1096.。请让我知道,如果你有任何问题。
Just to make sure, in case of using SLG59M1639 and SLG59M1748 as you described in a previous message, keeping EN pin of SLG59M1639 high and SLG59M1748 EN pins low, will allow me to create switch that will work automatically, won't it? What about quiescent current?
嗨Bartosz。是的你将会need to switch only EN in SLG59M1748 to automatically switch between 5V or 4.3V but please make sure you meet requirements for reverse voltage detection for 1639 that is described in AN that I sent you earlier ( I mean that there should be enough current on VIN side of 1639 to detect reverse voltage). Regarding quiescent current, so once 1639 shutdown it will consume the same current as when it is on because ON signal will be still high. Please let me know if you have any questions.
" I mean that there should be enough current on VIN side of 1639 to detect reverse voltage" - there will be 60V battery connected, what do you mean by enough current on VIN?
所以,我需要控制SLG59M1748C的信号,不呢?或者只连接到逻辑很高。
The second switch I've sent in power block draft at the beginning - can be replaced by two SLG59M1639 and switch automatically?
Pin ON of SLG59M1649V is active high or low? I think there is a mistake in datasheet (1.01) in block diagram. Should be SW Closed ->SW Open. The description is correct: "A low-to-high transition on this pin initiates the operation of the power switch. ON is an asserted-HIGH, level-sensitive CMOS input with ON_VIL < 0.3 V and ON_VIH > 1 V. As the ON input circuitry does not have an internal pull-down resistor, connect the ON pin directly to a GPIO controller – do not allow this pin to be open circuited." Could you confirm?
嗨Bartosz。谢谢您在我们的产品中有趣。你能给我一些关于你的申请的信息吗?
1. What is your input voltages for both power rails?
2.检测到反向电压时是否需要自动关闭?
3. What is your max switching current?
你好,
1.首先:4.3V @ 3A,第二:5V @ 1A
2. Yes (the first is the primary power source)
3.如上所述。
嗨Bartosz,
谢谢你的回应。电压水平和铜rrents are acceptable for this SLG59M1606 but unfortunately reverse current blocking works only when device is off, so you will need to switch power rail manually. For your application we can suggest you to use dual channel SLG59M1639 for 4.3V @3A and SLG59M1748 for 5V @1A. Please see attached schematic for your reference. With this load switches 1639 will automatically detect reverse voltage from 5V. I would also recommend you to read this AN of how to use our LS's in such applications as yourshttps://www.dialog-semicondiondiondum/an-1096.。请让我知道,如果你有任何问题。
你好,
我很困惑,“遗憾的是,只有当设备关闭时,才能反向电流阻塞,所以您需要手动切换电源轨” - 你能解释一下吗?我已经发送了一个具有两个PWR开关的示意图框图。我期待它是可行的,就像在AN-1096中所示一样。1A
Regards,
Bartosz
嗨Bartosz,
当设备关闭时,SLG59M1606具有反向电流阻塞,这意味着如果您打开一个电源导轨,请告知4.3V,然后将5V施加到VOUT,因此如果您设置的5V电源导轨将通过输入4.3V电源导轨到低电平,那么反向电流不会从VOUT传递到VIN。在使用SLG59M1639的情况下,除了反电流阻塞外,该装置还具有另外反向电压检测,这意味着如果将电压施加到比VIN更高至少50mV的VOUT,因此设备将自动检测到并关闭,所以您不需要设置为低电平手动。作为一个结论,在使用SLG59M1639和SLG59M1748的情况下,您的应用程序在先前响应中描述的情况下是不可行的。如果手动切换4.3V和5V电源轨,并且在制作之前的行为制动器可以是可以的,因此您也可以使用SLG59M1606V。请让我知道,如果你有任何问题。
你好
Just to make sure, in case of using SLG59M1639 and SLG59M1748 as you described in a previous message, keeping EN pin of SLG59M1639 high and SLG59M1748 EN pins low, will allow me to create switch that will work automatically, won't it? What about quiescent current?
Regards,
Bartosz
嗨Bartosz。是的你将会need to switch only EN in SLG59M1748 to automatically switch between 5V or 4.3V but please make sure you meet requirements for reverse voltage detection for 1639 that is described in AN that I sent you earlier ( I mean that there should be enough current on VIN side of 1639 to detect reverse voltage). Regarding quiescent current, so once 1639 shutdown it will consume the same current as when it is on because ON signal will be still high. Please let me know if you have any questions.
你好Petro,
我们可以在那种情况下使用SLG59M1649而不是SLG59M1639?
数据表的这一部分尚不清楚我们:
“启用时,在检测到反向电压条件的情况下,内部反向电流保护将快速打开开关(VOUT + 50 MV> VIN条件打开开关)。”
" I mean that there should be enough current on VIN side of 1639 to detect reverse voltage" - there will be 60V battery connected, what do you mean by enough current on VIN?
所以,我需要控制SLG59M1748C的信号,不呢?或者只连接到逻辑很高。
The second switch I've sent in power block draft at the beginning - can be replaced by two SLG59M1639 and switch automatically?
嗨Bartosz。
SLG59M1649 has internal discharge when it is off (but only when off by enable pin), so if this is not a problem for you, then you can use it as well.
关于DS语句,所以是的,当VOUT>比VIN超过50MV时,1639将关闭但要检测到该电压,VIN侧应该有足够的电流。当您在VIN上有4.3V并将5V申请到VOUT时,所以这5V将通过VIN。1639的RDS(ON)当其VIN1,VIN2和VOUT1,VOUT2并联时将是约23mohm,因此在VIN和VOUT之间产生50mV差异,您需要在VIN侧的电流消耗约2A左右。在A中,您可以看到我们在VIN侧使用电阻进行此条件。基于您的原理图意味着,如果您不使用此电源导轨对于任何可能完全消耗2A的其他块(请参阅附加图像以更好地理解,则需要直接燃烧2A电流)。
是的,如果您始终在VIN上始终有5V并且只需在5V或4.3V之间切换,则需要控制EN信号,否则您将始终在常见VOUT上有5V。如果您计划将5V从USB完全断开连接,它需要在连接USB时打开它,因此您可以随时设置EN。
对于Secon Load开关,它可能不起作用,因为您所描述的输入应该仅接受4.3V,如果您将拥有5V,则1639将自动切换到该电源导轨,这对您不利。您可能需要检查存在哪个电压,如果它是5V,则手动关闭该负载开关。或者您需要有一些过压保护。BTW:如果您的IC充电器支持4.3V和5V,则是第二电源开关的原因是什么,无论如何您在最后制作4.3V?
请让我知道,如果你有任何问题。
我们可以快速致电吗?(hangouts/zoom/teams)?
我的电子邮件地址是bziolek@taoglas.com
Regards,
Bartosz
Sure, I just wrote you on hangouts.
你好,
Pin ON of SLG59M1649V is active high or low? I think there is a mistake in datasheet (1.01) in block diagram. Should be SW Closed ->SW Open. The description is correct: "A low-to-high transition on this pin initiates the operation of the power switch. ON is an asserted-HIGH, level-sensitive CMOS input with ON_VIL < 0.3 V and ON_VIH > 1 V. As the ON input circuitry does not have an internal pull-down resistor, connect the ON pin directly to a GPIO controller – do not allow this pin to be open circuited." Could you confirm?
Regards,
Bartosz
嗨Bartosz。
It is active high and the description in block diagram is correct. When we talk about load switches, MOSFETs as well as about contacts in general, closed means turned ON and open means Turned off.https://thegrid.rexel.com/en-us/knowledge/product-faqs/w/wiki/928/contac ...。