Part Number: LM5145-Q1 Other Parts Discussed in Thread: LM5145 , LM5146 Hello,
I have a 5V power supply design that i have made as per the attached schematic but for some reason it does not work as it is supposed to. Instead of getting 5V i end with…
Hi Onur,
the output capacitance needs to be derated for applied voltage. 2x 22uF/16V/X5R/1210 will be approximately 20uF at 5VDC (check with Murata's online simsurfing tool). Consider changing to 47uF/10V/X7R for higher effective capacitance.
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Part Number: LM5141-Q1 Other Parts Discussed in Thread: LM5146-Q1 hi all:
I read datasheet of LM5141-Q1 , it`s good device for us. For the EMC test I want to know how to derive the formula of EMI filter. could you show me some article or information…
Part Number: TPS54560-Q1 Other Parts Discussed in Thread: LM25117-Q1 , LM5146-Q1 I'm using the TPS54560-Q1 Step Down DC-DC Converter the input is 24V the output is 5A/5V, do I need a fan or/and thermal pad to help cooling the device.
Hello,
One option may be the LM5140-Q1 65V synchronous dual controller that can be configured as a two-phase implementation. The LM5146-Q1 may also be a possibility. Note that the 12V output can feed the VCC of the LM5146-Q1 to reduce IC power consumption…
Hello Ivy,
The diode is there to prevent reverse feedback into the Vin node from the Vin pin for the device. This will happen if the voltage being supplied into Vin goes lower than the Vcc bias rail. Unless your power source requires this specifically…
HI Silvano,
The transient negative spike related to energy in the switching loop parasitic inductance. See app note slyt682. This parasitic inductance is minimized by correct and close placement of the input caps near the FETs - see app note snva803…
Part Number: LM5116 Other Parts Discussed in Thread: LM5146 , , PMP11257 , LM5146-Q1 Hi,
I am concerned about SW node ringing when the high side MOSFET turns on. My Vin is 87V (abs max) but I want to use 100VDS MOSFETs if it all possible. I therefore…
