SR036_04 Datasheet, PDF (5/19 Pages) Supertex, Inc – Inductorless, Dual Output Off-Line Regulators

Using a MOSFET in place of an IGBT
VN2460
SR036/SR037
1.0µF
~18V Unregulated
270µF
120VAC
or
230VAC
HVIN
SR036
or SR037
VSOURCE
VOUT
SR036: V_OUT=3.3V Regulated
SR037: V_OUT=5.0V Regulated
1.0µF
SRO3 Efficiency
50
40
SR03 Efficiency
VN2460, no EMI
GN2470, no EMI
30
VN2460, w/EMI
GN2470, w/EMI
20
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6
P_{UNREG (W)}
Efficiency and EMI Test Circuit
120/230VAC
50/60Hz
P6KE
400CA
B092005
GN2470
EMI
Suppressor
C_G
220pF
R_G
180kΩ
1.0μF
V_IN
GATE
SR03x ^SOURCE
V_REG
GND
5
V_REG
C_REG
1.0μF
V_UNREG
220μF (VN2460)
470μF (GN2470)