Part Number: TL494 The circuit diagram of the BOOST CONVERTER using the designed TL494. 1. Operational problems 1.1 When power is applied, MOSFET is damaged, S and D are shorted, and power supply CC operation 1.2 Same phenomenon with SMD type NVMFS5H663NL…
Part Number: TL494 Hello Team,
We are getting issue in PWM pulses generated by TL494 IC for DC-DC Buck converter employed as current limiting circuit for Telecom BMS used in 48V battery pack. The scope image is attached for reference, here RED circled…
Part Number: TL494 What could be the possible reasons for duty cycle to be constant in TL494 despite varying input voltages?
My circuit was working fine and after some rework the duty cycle is not varying as expected, i am not able to find out the issue…
Part Number: TL494 LMV358AQDRQ1 and TL494IDR above two models. The marking of the physical 1PIN we have received is different from the one we bought before, please refer to the marking of the picture, and please help confirm the reason.
Part Number: TL494 Other Parts Discussed in Thread: TL598 Hi all the team members,
We are using TL494 IC for some specific applications. We need small information about TL494.
The above picture is block diagram of TL494. In that picture i marked 0…
Hi Steve,
Thank you for advice,
I update the confirmed contents below.
・Confirmed the CT voltage and Feedback.
A slight noise occasionally appeared, but the Duty: 85% regardless of the noise.
・I tried to pass the driver circuit and operate the FET…
Part Number: TL494 설계된 TL494를 사용한 BOOST CONVERTER의 회로도. 1. 운영상의 문제 1.1 전원이 공급되면 MOSFET 이 손상되고 S와 D가 단락되고 전원 공급 장치 CC가 작동합니다 . 1.2 SMD 유형 NVMFS5H663NL MOSFET 과 동일한 현상 2. 소자의 사양이 부족하지 않다고 판단되는데, 회로의 회로 문제에 문제가 있습니까?
또한 인덕터 L1은 30uH에서 IDC 68A로 제작되었으며, R6, R18은…