Other Parts Discussed in Thread: LMG1020
hello
We are deveping lidar using phase shift topologe for long distane (30m) ,
So we need emtting module which can operate high peak power and shortpulse.
When we deveoped laser driver using FET or laser driver IC.
We could'nt get maximum peak current . I think that's beacause solow rising time.
Then I find out GAN operating fast rising time to get maximum peak current.
So I try to design circuit like this . If you don't mind , please check our circuit and reviewing.
Or recommanding another parts.
This is our modulation specification and description about main parts.
1. main part
- Gate driver : LM5113 TM
- GAN : EPC2015C ( vds : 40v / rdson : 4mohm / Id :53A / Pulsed Id : 235A
- Laser : prinston optronics 's 40W CW laser / Part name : PCW-CS5-40-W0808 ( Operating voltage : 2v / Oprerating current : 60A / Threshold current : 10A )
2. Modulation spec
- duty : 20%
- pulse width : 100ns
- freq : 2Mhz
ps : I have one more question .
Firstly I try to use pulsed laser but i can't find it operating up to 20% (duty). Even if CW laser is more expensive , i had to chose it because of duty.
If i use CW laser , is there any diffrences compare to pulsed laser except duty. ( like risingtime) ??
THANKYOU