BTN7030-1EPA Is DC Link capacitor required?

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User21997
Level 1
Level 1
First question asked
Is DC Link capacitor required and how to calculate it’s value?
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1 Solution
User19575
Level 3
Level 3
10 replies posted 5 replies posted First question asked
Yes it is required,
It is used for filtering voltage spikes on the battery line. This electrolytic capacitor is required to keep the voltage ripple at the Vs-pin low during switching operation.
It is usually recommended that the voltage ripple at the Vs-pin to the GND-pin is kept below 1 V (∆VS) peak to peak. The value of CVS must be aligned accordingly.
The layout is very important too. , this capacitor should be positioned with very short wiring close to the NovalithIC™ Lite chip. This must be done to keep the parasitic inductors of the PCB-wires as small as possible

For more details please refer to NovalithICTM half-bridge family BTN89xx.

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1 Reply
User19575
Level 3
Level 3
10 replies posted 5 replies posted First question asked
Yes it is required,
It is used for filtering voltage spikes on the battery line. This electrolytic capacitor is required to keep the voltage ripple at the Vs-pin low during switching operation.
It is usually recommended that the voltage ripple at the Vs-pin to the GND-pin is kept below 1 V (∆VS) peak to peak. The value of CVS must be aligned accordingly.
The layout is very important too. , this capacitor should be positioned with very short wiring close to the NovalithIC™ Lite chip. This must be done to keep the parasitic inductors of the PCB-wires as small as possible

For more details please refer to NovalithICTM half-bridge family BTN89xx.
0 Likes