The figure in question:
This will allow the charger to start up, and you can do a little testing without a battery, but for accurate testing you should have a battery (or emulated battery) connected. Emulating the battery is advisable for doing…
Regarding the 4.7nF capacitor on Vfb, the demo board is designed to work over a wider range than most applications. Some discrepancies from the datasheet often arise as a result of that. I recommend you use the datasheet calculations and…
I've designed a charger that's 28-32Vdc In for a 24V battery that charges at 10A. Schematic is attached.
In the bulk and absorption phase the SW pin appears to be oscillating, similar to that of an unstable buck. I've played around with the…
We are desing 36v vin to 28.7v 7cell li-ion battery charger with LTC4013. We use one DC load to simulate the batterey to test, but the SW just output 0v. INTVCC =5v, seems no calculation faults with external RC. Can you help to advice
I have a question LTC4013.
1. Regarding maximum charge current controlUnderstanding that it is determined by Rsense, is there any other means to control charging current (maximum)?2. Regarding gate voltage of half bridge (MOSFET)Is it 5V drive…
Hello! I want to use the LTC4013 chip to charge the LiTiO battery. I need to charge with a voltage of 2.8 V. I want to charge in 2 stages. First, direct current, and then constant voltage.As I understand it, I can regulate the maximum charging voltage…
1. Datasheet says "However, during start-up and recovery conditions, the gate drive signals may be as low as 3V. Therefore, to ensure that the LTC4013 operates properly, use logic level threshold MOSFETs with a VT of about 2V or less"We have…
Table 1 in the datasheet shows the FB servo values for various modes of operation. For your selected mode, refer to those values for Vfb. You would then calculate a voltage divider such that the "output" voltage is that value.
Li-ion charger modeled after schematic on datasheet page 35.
DCIN 22 - 24V
Max charge current 20A.
How it works
With the battery at 6.3V, DCIN = 24V/3A from bench supply, Green LED comes on
INTVcc = 5.01V
FB = 1.42V
We are looking for the LTspice model of LTC4013. According to the previous Q&A about LTC4013, there's no model available before. Are there any updates? Thank you for the advice.