• LMR33620: LMR33620 in inverting buck boost mode

  

  KPA

  TI Thinks Resolved

  Part Number: LMR33620 Hi, Is it feasible to use LMR33620 in inverting buck mode to get non- isolated negative rail ? Also, if it can be used to get non-isolated negative voltage using coupled inductor or not ? Regards,

  • 2 months ago
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• LMR33620: Parallel operation of LMR33620

  

  Jonathan Geronga

  TI Thinks Resolved

  Part Number: LMR33620 Other Parts Discussed in Thread: LMR33640 Hi Team, Our customer would like to confirm if 2 LMR33620 can be connected in parallel to increase the current as they need a current value of 4A? They have LMR33620 as of the moment so if it…

  • 3 months ago
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Answered

• LMR33620-Q1: Schematic review

  

  Kygo Cheng

  Resolved

  Part Number: LMR33620-Q1 Other Parts Discussed in Thread: LMR33620 Hi Team, There is a good new that DIN LMR33620 Please help check this SCH, THX

  • Resolved

  • 19 days ago
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Answered

• LMR33620: LM33620 AGND and PGND question

  

  Chao Fu Chen

  Resolved

  Part Number: LMR33620 Hi Team, My customer using this part in his project and he found some issue need your clarify. He mentioned that LM33620 block diagram show the AGEN and PGND is the some GND inside. But they test PGND to AGND resistor value have…

  • Resolved

  • 18 days ago
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Answered

• LMR33620-Q1: IC burn-off problem

  

  Henrik Leegaard1

  Resolved

  Part Number: LMR33620-Q1 Other Parts Discussed in Thread: TPS62273 To whom it may concern In a design I use the LMR33620C-Q1 (2.1MHz) to generate a 5V supply from a 18 - 30V input supply I experience the IC burns off randomly when the input supply is applied…

  • Resolved

  • 19 days ago
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Answered

• LMR33620: about minimum on-time limit

  

  Tommy Tzeng

  Resolved

  Part Number: LMR33620 Hi Sir, may we know about minimum on-time limit? we condition as below: Vin=30v, Vout-3.3/1.5A , we choice is the B version(1.4Mhz) and DDA package. but we calculated duty cycle is 0.11%, if use swutch frequency is 1.2Mhz~1.6Mhz …

  • Resolved

  • 1 month ago
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Answered

• LMR33620: Strange ICThetaJA Effective

  

  Daniel Pircher

  Resolved

  Part Number: LMR33620 Hi, I made a Webench-Simulation, the ICThetaJA Effective is given with 6°C/W ( Effective IC Junction-to-Ambient Thermal Resistance). In the datasheet the value RθJA Junction-to-ambient thermal resistance is given with 42.9°C/W. I…

  • Resolved

  • 1 month ago
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Answered

• LMR33620: Webench Asks for 5 Output Caps - Does this make sense?

  

  Max Henzi

  Resolved

  Part Number: LMR33620 Hello, I am using the LMR33620ADDA to provide 9.5V at 1.5A from an input supply of 10.5V to 18V. I've used Webench to create the design. Webench is asking for 5 15UF output capacitors with an "effective" capacitance of 16UF.…

  • Resolved

  • 21 days ago
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Answered

• PSPICE-FOR-TI: LMR33620 Bode Plot Schematic and Simulation Configuration

  

  Domenick DAmico

  Resolved

  Part Number: PSPICE-FOR-TI Hello, I am currently trying to configure the LMR33620B version for a Bode Plot simulation. I am having trouble with I believe the voltage source and schematic simulation. Are there any example files or reference designs for…

  • Resolved

  • 1 month ago
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• LMR33620: Efficiency when changing the input voltage

  

  Y.Ottey

  Part Number: LMR33620 Dear TI Team I have a question about the efficiency of the LMR33620. When the input voltage is changed from 8V to 36V with the output voltage fixed as shown in the figure below, the efficiency is poor for all load currents. What…

  • 2 months ago
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