Hi
Datasheet page.17 (figure 30 RDS(ON) Current Sensing without Diode
Emulation) . Is that mean, if no sense resistor(Rs) can not achieve DEM?
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Hi
Datasheet page.17 (figure 30 RDS(ON) Current Sensing without Diode
Emulation) . Is that mean, if no sense resistor(Rs) can not achieve DEM?
Hi Tim,
1. Customer is coufused why the fig.30 title shown "Rdson current sensing without diode emulation". The diode emulation should happen when inductor current become negative, and decided by monitor the voltage between SW and DEMB. No matter we use Rdson sense or put another Rs sense. For fig.30 circuit, it show Rdson sensing connection, but it doesn't mean it's without diode emulation, rgiht?
2. And you said "Tie DEMB to CSG to enable diode emulation mode", how to connect to disable diode emulation mode? Add RDEMB=10k will make DEMB pin=0.45v, how to decide RDEMB value and any formula?
Thanks.
Regards,
Lynn
Hi Lynn,
Please click on Resolved if there are no further questions so we can close out this thread.
Regards,
Tim