Data Brief
For further information contact your local STMicroelectronics sales office.
December 2007 Rev 1 1/5
5
STEVAL-ISC001V1
30 W AC-DC adapter based on the L6565
Features
■Input voltage range (VIN) from 88 to 264 VAC
■Mains frequency (fL) 50 / 60 Hz
■Maximum output power (POUT 30 W)
■Output voltage VOUT = 15 V ± 3%
■Output current IOUT = from 0 to 2 A
■VRIPPLE ≤ 1 %
■Minimum switching frequency (@ 100 VDC
input voltage) 60 kHz
■Target efficiency (@ POUT= 30 W, VIN = 88 -
264 VAC) η > 80%
■Maximum no-load input power < 0.75 W(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
1. Compliant with European Code of Conduct on
Efficiency of External Power Supplies, phase 2,
01.01.2003
STEVAL-ISC001V1
www.st.com
Characteristics STEVAL-ISC001V1
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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:
This evaluation board complies with the "Phase 2" requirements. The minimum switching
frequency (60 kHz @ VIN = 100 VDC) has been chosen trading off between the transformer
size and frequency-related losses. To provide room for the leakage inductance spike, an
800 V MOSFET (STP5NK80ZFP) is used.
Table 1. No-load conditions
Rated input power
No-load power consumption
Phase 1
01.01.2001
Phase 2(1)
01.01.2003
1. Compliant with European Code of Conduct on Efficiency of External Power Supplies, phase 2, 01.01.2003
Phase 3
01.01.2005
≥ 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
STEVAL-ISC001V1 Board schematic
3/5
2 Board schematic
Figure 1. Schematic
8
3
R2
1.5M
B1 DF06G
R3
1.5M
R4
18K
C5
100 F
400V
D1
1N4148D2
1N4148
R16
220K
R10
1.5
R9
1.5
C14
47nF
400V
D4
1.5KE220A
Q1
STP5NK80ZFP
D3
STTH1L06
F1 2A fuseNTC1 10R R1 100
Vin
88V to
264Vac
D5 1N4148
R5 4.7
R8 47K
R6 220
R7 10
R12 33K
IC2
TL431
D6 1N4148
T1
1
3
6
IC1
L6565
12
7
5
2
2
3
3
4
1
1
C6 2.2nF Y1
D7
STPS8H100FP
L2
10 H
R15
5.6K
C7
47 F
25V
C10,C11
680F
25V
R14
2K
R13
10K
15V
2A
D01IN1303B
IC3 PC817X1
R11
1.5K
C8
1nF
C9
2.2nF
C15
100pF
400V
C7b
100nF
C13
560nF
4
8
5
4
10
C12
330F
25V
Revision history STEVAL-ISC001V1
4/5
3 Revision history
Table 2. Document revision history
Date Revision Changes
18-Dec-2007 1 Initial release.
STEVAL-ISC001V1
5/5
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