Download STEVAL-ISC001V1

STEVAL-ISC001V1
30 W AC-DC adapter based on the L6565
Data Brief
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)
STEVAL-ISC001V1
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
December 2007
Rev 1
For further information contact your local STMicroelectronics sales office.
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Characteristics
1
STEVAL-ISC001V1
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
Phase 1
Phase 2(1)
Phase 3
01.01.2001
01.01.2003
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
1. Compliant with European Code of Conduct on Efficiency of External Power Supplies, phase 2, 01.01.2003
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.
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Vin
88V to
264Vac
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R4
18K
R3
1.5M
R2
1.5M
C8
1nF
3
2
8
C5
100 F
400V
C9
2.2nF
1
L6565
IC1
6
D1
1N4148
B1 DF06G
R1 100
4
7
5
C7b
100nF
R16
220K
D2
1N4148
C14
47nF
400V
R7 10
R8 47K
C7
47 F
25V
D6 1N4148
R6 220
C15
100pF
400V
R9
1.5
R5 4.7 D5 1N4148
D3
STTH1L06
D4
1.5KE220A
10
R10
1.5
3
4
IC2
TL431
IC3 PC817X1
C6 2.2nF Y1
C10,C11
680 F
25V
D7
8 STPS8H100FP
Q1
STP5NK80ZFP
5
4
1
3 T1
2
2
1
3
R13
10K
R15
5.6K
15V
2A
R14
2K
C13
560nF
D01IN1303B
R12 33K
R11
1.5K
1
C12
330 F
25V
L2
10 H
Figure 1.
NTC1 10R
2
F1 2A fuse
STEVAL-ISC001V1
Board schematic
Board schematic
Schematic
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Revision history
3
STEVAL-ISC001V1
Revision history
Table 2.
Document revision history
Date
Revision
18-Dec-2007
1
Changes
Initial release.
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STEVAL-ISC001V1
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