Hello James,
Can you tell me what the switching frequency is during the peak current and during the hold current at the 20mH 11 Ohm coil?
Can you tell me what the switching frequency is during the hold current at the 600mH 660 Ohm coil?
The frequency does not show on the image.
If I take a look at page 9 of the datasheet I think the hold pin is connected to gnd in the 8 pins device??? Also on page 5 there is a line "CURRENT CONTROLLER, INTERNAL SETTINGS" showing
IPEAK Peak current PEAK = GND 160 200 240 mA
IHOLD Hold current HOLD = GND 40 50 60 mA
So if you gnd the peak pin you get a 20kHz. You also recommended me to use a resistor greater that 160k?
Did you also connect a 68k and a 1n in parallel to the osc pin liked i suggested?
What has the big influance the resistance or the inductance of the coil?
Are there "big" differances between the 8 pin and 14 pin device?
We also already have about a 1000 pieces of the 8 pins chips already here on-site.
Is there a way to return them and exchange them for 14 pins devices. Who do I have to contact if this is possible?
With kind regards,
Marcel