Power Management

Q&A

by Fedep Power Management

Started 1 day ago

23 0 0

Not Answered
LT3999 - SS capacitor starts charging before UVLO threshold 0
Not Answered

Hi all, I have designed a push-pull converter using the LT3999 controller. During testing, I monitored the UVLO, SS, and SWA pins using an oscilloscope. I observed that although switching at the SWA pin begins when the UVLO voltage reaches approximately...

Datasheet/Specs push-pull Ultralow Noise Regulators flyback switching regulators isolated converters LT3999 Show More

23 0 0
by mike35 Power Management

Latest 1 day ago by aymennorain
39 1 0
Not Answered
Piezo driver with EBV DC2838A 0
Not Answered

Hi, Using the EBV DC2838A, I would like to drive a piezo element, which I simply treat as a capacitor (typically around 5 nF). In this application, the voltage must reach 140 V, and the current is fairly low (on the order of 30 mA peak). Do you think...

LT8365 hardware piezo LT8365 boost converter switching regulators Show More

39 1 0
by alexosborne Power Management

Latest 1 day ago by charlyelkhoury
152 7 0
Not Answered
LT8306 gate drive held high during shutdown 0
Not Answered

I have an open support ticket (CS-592333-Q3Z9D1) but have not received a response yet-- posting here as well in case the team is more responsive. I have a flyback design using the LT8306 that works great in steady-state. Pulling the chip into shutdown...

hardware LT8306 switching regulators

152 7 0
by misterbill1968 Power Management

Latest 1 day ago by misterbill1968

32 2 0

Not Answered
max17521 power studio designer 0
Not Answered

I had a MAX17521 project saved in EESim, which did not transition to the new Power Studio Designer and I cannot find this device in the new tool. This is a problem! Is there still a way to access the old EESim tool?

hardware switching regulators MAX17521

32 2 0
by KTrenholm Power Management

Started 1 day ago

9 0 0

Not Answered
LTC4151 Not ACKing Read Address 0
Not Answered

Using an LTC4151IMS#TRPBF. I'm attempting to read the SENSE, VIN, and ADIN registers from a microcontroller over I2C @ 100KHz and coming across a very strange problem I haven't seen with this part before. We are leaving both ADR pins open, so I've...

Analog to Digital Converters (ADCs) hardware i2c LTC4151IMS#TRPBF LTC4151 Show More

9 0 0
by mhshawky Power Management

Started 1 day ago

16 0 0

Not Answered
Design Review 0
Not Answered

Hello, can you review my design. It's primarily used to take 60V regulated input and charge a 55V battery. I've set the Ictrl to 0.75A and vout to 55.9V to take into account diode drop and other series resistances. It worked well in testing with both...

hardware LTC7103 switching regulators

16 0 0
by swestenberg Power Management

Started 2 days ago

25 0 0

Not Answered
Inductor DCR current sensing for LT8292 (instead of discrete shunt resistor) 0
Not Answered

Hello, I am using an LT8292 and also a LTC7891 in a design. The LTC7891 explicitly calls out inductor DCR current sensing as a technique to avoid use of a discrete shunt, as well as a detailed procedure for choosing the corresponding passive components...

hardware External Power Switch Buck-Boost Controllers switching regulators Buck-Boost Regulators lt8292 Step-Down (Buck) Regulators Show More

25 0 0
by Juanantoniolopez Power Management

Latest 2 days ago by John_M
62 3 0
Suggested Answer
ADM1818_Capacitor on reset output 0
Suggested Answer

Hello, I am using ADM1818-5ARTZ-RL7 and I have following issue: The pint /RST is kept low even if the VCC voltage higher than tripping threshold. I have 1uF capacitor connected between /RST pin to GND. If I remove the capacitor the /RST pin goes...

Supervisory Circuits & Reset ICs hardware adm1818

62 3 0
by fbartraMissions Power Management

Latest 2 days ago by fbartraMissions

33 2 0

Suggested Answer
gm and Av parameters? 0
Suggested Answer

I am calculating the stability feed back loop for my design The gm and AV values are required to calculate Rth, Cthp & Cthz. the data sheets shows gm = 1.5 mmhos but no tolerance is given I could not find any values for AV. are there recommended...

ltc3777 hardware switching regulators

33 2 0
by Janus523 Power Management

Latest 2 days ago by Janus523

61 2 0

Not Answered
blanking period 0
Not Answered

Hello Folks, The issue is premature turn off. As the the drain voltage falls below the set threshold (-10mV programmed by 3K resistor) the gate (after a small delay) turns on. The gate then turns off 400-500ns later caused by positive swings of the...

hardware switching regulators LT8309

61 2 0
by Mylin Power Management

Latest 3 days ago by PSD2025
43 1 0
Not Answered
Problems with output regulation 0
Not Answered

We are having a problem in some of our circuits that use the LT8300 controller. See schematic below. Our application has a Vin of 24 - 26.4V and is to produce a 10V output. We use a Wurth 100uH 1:1 coupled inductor (744281101) for a transformer. Rfb...

hardware lt8300 switching regulators

43 1 0
by sh30062001 Power Management

Started 3 days ago

25 0 0

Not Answered
To check the PCB guidelines for LTC3779 0
Not Answered

Dear Team We are designing a circuit of 48V buck boost using LTC3779IFE#TRPBF but we couldn't able to find the PCB routing and placement guidelines Kindly share if you have any documentation if not kindly share your inputs to help us to proceed.

hardware ltc3779 guidelines pcb power electronics layout switching regulators LTC3779IFE#TRPBF power supply Show More

25 0 0
by AP5000 Power Management

Started 3 days ago

32 0 0

Not Answered
LT8641 not starting properly stays at 1.6V Vout 0
Not Answered

Hello, We are using the LT8641 on our PCB, and it works quite well in general. However, from time to time, we experience problems with a few units. In these cases, the IC does not start up properly, and VOUT remains at 1.6 V. There is no short circuit...

hardware switching regulators LT8641 Step-Down (Buck) Regulators

32 0 0
by oben Power Management

Started 3 days ago

24 0 0

Not Answered
How to Parallel Two LTM4670 µModule Regulators for Higher Output Current? 0
Not Answered

Hello, I am planning to use two LTM4670 µModule regulators in parallel in order to increase the total output current capability. I reviewed the LTM4670 datasheet, but I could not find a clear typical application circuit or detailed guidance showing...

hardware LTM4670 LTM4670IY switching regulators

24 0 0
by LQLYY Power Management

Started 3 days ago

15 0 0

Not Answered
FB pin 0
Not Answered

hello i checked the datasheet of the LT8356-1 and i saw the description about the FB pin as the following figure i do not understand that during the startup,why FB must be set above 400mv? please help explain this. thank you best regard...

Datasheet/Specs LT8356-1 LED Driver IC

15 0 0

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Q&A

Not Answered
LT3999 - SS capacitor starts charging before UVLO threshold 0
Not Answered

Not Answered
Piezo driver with EBV DC2838A 0
Not Answered

Not Answered
LT8306 gate drive held high during shutdown 0
Not Answered

Not Answered
max17521 power studio designer 0
Not Answered

Not Answered
LTC4151 Not ACKing Read Address 0
Not Answered

Not Answered
Design Review 0
Not Answered

Not Answered
Inductor DCR current sensing for LT8292 (instead of discrete shunt resistor) 0
Not Answered

Suggested Answer
ADM1818_Capacitor on reset output 0
Suggested Answer

Suggested Answer
gm and Av parameters? 0
Suggested Answer

Not Answered
blanking period 0
Not Answered

Not Answered
Problems with output regulation 0
Not Answered

Not Answered
To check the PCB guidelines for LTC3779 0
Not Answered

Not Answered
LT8641 not starting properly stays at 1.6V Vout 0
Not Answered

Not Answered
How to Parallel Two LTM4670 µModule Regulators for Higher Output Current? 0
Not Answered

Not Answered
FB pin 0
Not Answered

Q&A

Not Answered LT3999 - SS capacitor starts charging before UVLO threshold 0 Not Answered

Not Answered Piezo driver with EBV DC2838A 0 Not Answered

Not Answered LT8306 gate drive held high during shutdown 0 Not Answered

Not Answered max17521 power studio designer 0 Not Answered

Not Answered LTC4151 Not ACKing Read Address 0 Not Answered

Not Answered Design Review 0 Not Answered

Not Answered Inductor DCR current sensing for LT8292 (instead of discrete shunt resistor) 0 Not Answered

Suggested Answer ADM1818_Capacitor on reset output 0 Suggested Answer

Suggested Answer gm and Av parameters? 0 Suggested Answer

Not Answered blanking period 0 Not Answered

Not Answered Problems with output regulation 0 Not Answered

Not Answered To check the PCB guidelines for LTC3779 0 Not Answered

Not Answered LT8641 not starting properly stays at 1.6V Vout 0 Not Answered

Not Answered How to Parallel Two LTM4670 µModule Regulators for Higher Output Current? 0 Not Answered

Not Answered FB pin 0 Not Answered

Not Answered
LT3999 - SS capacitor starts charging before UVLO threshold 0
Not Answered

Not Answered
Piezo driver with EBV DC2838A 0
Not Answered

Not Answered
LT8306 gate drive held high during shutdown 0
Not Answered

Not Answered
max17521 power studio designer 0
Not Answered

Not Answered
LTC4151 Not ACKing Read Address 0
Not Answered

Not Answered
Design Review 0
Not Answered

Not Answered
Inductor DCR current sensing for LT8292 (instead of discrete shunt resistor) 0
Not Answered

Suggested Answer
ADM1818_Capacitor on reset output 0
Suggested Answer

Suggested Answer
gm and Av parameters? 0
Suggested Answer

Not Answered
blanking period 0
Not Answered

Not Answered
Problems with output regulation 0
Not Answered

Not Answered
To check the PCB guidelines for LTC3779 0
Not Answered

Not Answered
LT8641 not starting properly stays at 1.6V Vout 0
Not Answered

Not Answered
How to Parallel Two LTM4670 µModule Regulators for Higher Output Current? 0
Not Answered

Not Answered
FB pin 0
Not Answered