D70N03L View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'D70N03L' PDF : 16 Pages View PDF
Power losses estimation
High side switch (SW1)
Pconduction
RDS(on) • IL2 • δ
STD70N03L - STD70N03L-1
Low side switch (SW2)
RDS(on) • IL2 • (1 – δ)
Pswitching
Vin
•
(Qgsth(SW1)
+
Qgd(SW1))
•
f
•
I--L-
Ig
Zero voltage switching
Pdiode
Recovery
Conduction
Pgate(Qg)
PQoss
Parameter
d
Qgsth
Qgls
Pconduction
Pswitching
Pdiode
Pgate
PQoss
Not applicable
Not applicable
Qg(SW1) • Vgg • f
V-----i-n----•-----Q-----o---s---s--(--S----W----1---)---•-----f
2
1Vin • Qrr(SW2) • f
Vf(SW2) • IL • tdeadtime • f
Qgls(SW2) • Vgg • f
V-----i-n----•-----Q-----o---s---s--(--S----W----2---)---•-----f
2
Meaning
Duty-cycle
Post threshold gate charge
Third quadrant gate charge
On state losses
On-off transition losses
Conduction and reverse recovery diode losses
Gate driver losses
Output capacitance losses
10/16
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