Features
STEVAL-ISC001V1
30 W AC-DC adapter based on the L6565
Data Brief
■ Input voltage range (V
■
Mains frequency (fL) 50 / 60 Hz
■ Maximum output power (P
■ Output voltage V
■ Output current I
■ V
■ Minimum switching frequency (@ 100 V
RIPPLE
≤ 1 %
OUT
OUT
) from 88 to 264 V
IN
30 W)
OUT
= 15 V ± 3%
= from 0 to 2 A
DC
AC
input voltage) 60 kHz
■ Target efficiency (@ P
264 V
■ Maximum no-load input power < 0.75 W
) η > 80%
AC
= 30 W, VIN = 88 -
OUT
(1)
Description
This evaluation board is an AC-DC adapter for
consumer equipment, typically implemented as an
external unit. For more details see Chapter 1:
Characteristics
STEVAL-ISC001V1
1. Compliant with European Code of Conduct on
Efficiency of External Power Supplies, phase 2,
01.01.2003
December 2007 Rev 1 1/5
For further information contact your local STMicroelectronics sales office.
www.st.com
5
Characteristics STEVAL-ISC001V1
1 Characteristics
As such, it falls within the scope of the European "Code of Conduct on Efficiency of External
Power Supplies" and is required to meet efficiency standard under no-load conditions as
specified in the following table:
Table 1. No-load conditions
No-load power consumption
Rated input power
≥ 0.3 W and < 15 W 1.0 W 0.75 W 0.30 W
≥ 15 W and < 50 W 1.0 W 0.75 W 0.30 W
≥ 50 W and < 75 W 1.0 W 0.75 W 0.30 W
1. Compliant with European Code of Conduct on Efficiency of External Power Supplies, phase 2, 01.01.2003
Phase 1
01.01.2001
Phase 2
01.01.2003
(1)
Phase 3
01.01.2005
This evaluation board complies with the "Phase 2" requirements. The minimum switching
frequency (60 kHz @ V
= 100 VDC) has been chosen trading off between the transformer
IN
size and frequency-related losses. To provide room for the leakage inductance spike, an
800 V MOSFET (STP5NK80ZFP) is used.
2/5
STEVAL-ISC001V1 Board schematic
2 Board schematic
Figure 1. Schematic
2A
15V
R15
5.6K
10K
R13
C13
560nF
R14
2K
T1
3
C14
C15
D4
47nF
L2
10 H
D7
STPS8H100FP
8
400V
100pF
D3
STTH1L06
1.5KE220A
400V
C12
330F
680F
C10,C11
1
D2
1N4148
25V
25V
4
D5 1N4148
R5 4.7
10
C7
C6 2.2nF Y1
47 F
R16
25V
220K
R11
5
1.5K
R8 47K
1
IC3 PC817X1
4
Q1
STP5NK80ZFP
R6 220
D6 1N4148
R7 10
R12 33K
3
2
R10
R9
C7b
1
1.5
1.5
100nF
3
IC2
TL431
D01IN1303B
2
B1 DF06G
R1 100
NTC1 10R
F1 2A fuse
Vin
88V to
C5
7
5
D1
400V
100 F
264Vac
1N4148
8
R2
1.5M
R3
1.5M
IC1
3
4
L6565
6
12
C9
2.2nF
C8
1nF
R4
18K
3/5
Revision history STEVAL-ISC001V1
3 Revision history
Table 2. Document revision history
Date Revision Changes
18-Dec-2007 1 Initial release.
4/5
STEVAL-ISC001V1
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