September 2016
DocID029692 Rev 1
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STEVAL-ILL076V2
18 W wide input range ultra slim flyback converter using
HVLED001A quasi resonant flyback controller and STD8N80K5
Data brief
Features
Input voltage: Vin: 90 – 264 Vrms, f: 45 – 66
Hz
Output power:
18 W at wide input range
40 W at European input range
Output voltage: 56 V ±5 %
High power factor, low THD
No-load: better than 400 mW at 230 Vin
Full load efficiency: greater than 92 %
Short circuit protection with auto restart
EMI: pre-compliant with EN55022 (B) limits
Safety: complies with EN60950
Dimensions: 183 mm x 28 mm x 17 mm
PCB: single sided, 35 µm, FR4, mixed
PTH/SMD
RoHS compliant
Description
This board implements an offline power converter
based on a single stage high-PF flyback topology
using the HVLED001A controller.
A very slim form factor is achieved with
innovative magnetic componentry.
The output voltage is controlled by the primary
side, thus reducing the need for costly opto-
couplers. The HVLED001A PSR precision and
the innovative structure of the transformer makes
for highly accurate output voltage regulation
against load and line changes.
A very high efficiency is obtained and a full set of
protections including output short circuit and input
overvoltage is included.
Conducted EMI is pre-screened and clearances
and creepage distances adhere to EN60950
safety requirements.
Power factor and THD are optimized to be
respectively higher than 0.95 and lower than 10%
at full load over the entire input voltage range.
The main application for this converter is for bus
power supplies in a LED string driver providing 4
kV isolation.
Schematic diagram and bill of materials
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DocID029692 Rev 1
1 Schematic diagram and bill of materials
Figure 1: STEVAL-ILL076V2 circuit schematic
GSPG0609161035SG
STEVAL-ILL076V2
Schematic diagram and bill of materials
DocID029692 Rev 1
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Table 1: Board bill of materials
Q.ty
Reference
Part / Value
Voltage / Watt / Ampere
Tolerance
1
C1
3.3 nF
50 V
10%
1
C2
470 µF
63 V
10%
2
C3, C4
220 nF
305 Vac X2
10%
1
C5
100 nF
305 Vac X2
10%
2
C6, C7
220 pF
500 Vac Y1
10%
1
C8
100 pF
1 kV
10%
2
C9, C10
470 pF
300 Vac Y2
10%
1
C11
10 pF
100 V
10%
1
C12
47 µF
35 V
10%
2
C13, C14
100 nF
100 V
10%
1
C15
15 µF
10 V
10%
1
C16
220 pF
50 V
10%
1
D1
KBP305G
600 V / 3 A
1
D2
STPS2200U
200 V / 2 A
0
D3
NM
1
D4
P6KE300A
300 V
1
D5
STTH108A
800 V / 1 A
2
D6, D10
LL4148GS18
1
D7
BZV55-C18
Zener 18 V
2
D8, D11
BZV55-B30
Zener 30 V
1
D9
BZV55-B27
Zener 27 V
1
F1
2 Amps (T)
300 Vac
1
JPX1
20.5 mm
1
JPX2
171 mm TIW
1
L1
1770.0013
2x 40 mH/ 0.25 A
1
P1
SIP header
1
P2
SIP header
1
Q1
STD8N80K5
800 V / 8 A
1
R1
1 ohms
0.500 W
1%
1
R2
0.82 ohms
0.500 W
1%
1
R3
1 Kohms
0.125 W
1%
1
R4
10 Mohms
0.125 W
1%
1
R5
47 ohms
0.250 W
1%
1
R6
8.2 ohms
0.250 W
1%
1
R7, R8
47 Kohms
0.125 W
1%
Schematic diagram and bill of materials
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DocID029692 Rev 1
Q.ty
Reference
Part / Value
Voltage / Watt / Ampere
Tolerance
1
R9
24 Kohms
0.125 W
1%
1
R10
100 Kohms
0.125 W
1%
1
R11
1 Kohms
0.600 W
1%
1
R12
470 ohms
0.250 W
1%
1
R13
N.M.
1
R14
470 ohms
0.125 W
1%
1
T1
2294.0005
590 µH/ 95k Hz/ 40 W
1
U1
HVLED001A
1
V1
ERZE07A431
MOV
STEVAL-ILL076V2
Mechanical drawing and connection
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2 Mechanical drawing and connection
Figure 2: STEVAL-ILL076V2 – connections
Revision history
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DocID029692 Rev 1
3 Revision history
Table 2: Document revision history
Date
Version
Changes
13-Sep-2016
1
Initial release.
STEVAL-ILL076V2
DocID029692 Rev 1
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