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PDF BD7F100HFN-LB Data sheet ( Hoja de datos )
| Número de pieza | BD7F100HFN-LB | |
| Descripción | Optocoupler-less Isolated Flyback Converter | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Datasheet
Optocoupler-less
Isolated Flyback Converter
BD7F100HFN-LB BD7F100EFJ-LB
General Description
This product guarantees long time supply availability in
the industrial instrumentation market.
BD7F100 is an optocoupler-less Isolated Flyback
Converter. An optocoupler or the tertiary winding
feedback circuit which was needed to obtain a stable
output voltage isolated by a transformer in the
conventional application becomes unnecessary, thus,
the number of parts is reduced drastically, producing a
small-sized and high-reliability application isolated type
power supply.
Furthermore, a highly by the use of the Original
Adapted-Type ON-Time Control Technology, it makes
the external phase compensation parts become
unnecessary, therefore a highly efficient isolated type
power supply application can easily be produced.
Key Specifications
Supply Voltage of Operation:
SW Terminal Operating Voltage:
Over Current Limit:
Switching Frequency:
Reference Voltage Accuracy:
Quiescent Current:
Operating Current:
Junction Temperature of Operation:
3V to 40V
50V (Max)
1.25A (Typ)
400kHz (Typ)
±1.5%
0µA (Typ)
2mA (Typ)
-40°C to +125°C
Packages
HSON8
HTSOP-J8
W(Typ) D(Typ) H(Max)
2.90mm x 3.00mm x 0.60mm
4.90mm x 6.00mm x 1.00mm
Features
Guaranteed long time supply availability for
Industrial Applications.
No need for an optocoupler or a transformer tertiary
winding.
The output voltage can be set by two external
resistors and the transformer turns ratio.
Uses Original Adapted Type ON-Time Control
Technology.
High-speed load response is realized and external
phase compensation parts are unnecessary.
Fixed switching frequency and low output ripple
Highly efficient light load mode available (PFM
operation)
Shutdown / Enable Control
Built-in N-Channel MOSFET
Soft start function
Output load compensation function
Protection functions:
VIN Under Voltage Lock-Out (VIN UVLO)
Over Current Protection (OCP)
Thermal Shutdown Protection (TSD)
HSON8
HTSOP-J8
Application
Industrial equipment Isolated Power Supply
O Product structure : silicon monolithic integrated circuit
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
O This product has no designed protection against radioactive rays
1/28
TSZ02201-0J1J0AJ00910-1-2
29.Jun.2016 Rev.002
1 page  
BD7F100HFN-LB BD7F100EFJ-LB
Electrical Characteristics (Unless otherwise specified Ta = 25°C, VIN = 24V, and VSDX/EN = 2.5V.)
Parameter
Symbol
Limit
Unit
Min Typ Max
Conditions
Power Supply
Quiescent Current
Operating Current
UVLO Detection Voltage
IST - 0 10 µA VSDX/EN = 0V
ICC
-
2
4
mA
VSDX/EN = 2.5V
VREF = 2V (at PFM operation)
VUVLO 2.3 2.5 2.7 V VIN falling
UVLO Hysteresis Voltage
VUVLO_HYS
0.1
0.15
0.2
V
SDX/EN Control
Shutdown Voltage
VSDX
0.3 0.9 1.5 V
Enable Voltage
VEN 1.9 2.0 2.1 V VSDX/EN rising
Enable Hysteresis Voltage
VEN_HYS
0.15
0.2
0.25
V
SDX/EN Input Current
ISDX/EN
-
0
1 µA VSDX/EN=2V
Reference Voltage
Reference Voltage
VREF
0.768 0.78 0.792 V
Switch Characteristics
ON-Resistance
RON - 0.5 - Ω Between SW - PGND terminals
Over Current Limit
ILIMIT
1
1.25 1.5
A
Switching Frequency
fSW - 400 - kHz At PWM operation (Duty=40%)
Minimum ON Time
tON_MIN - 350 - ns
Minimum OFF Time
tOFF_MIN
-
300
- ns
Maximum OFF Time
tOFF_MAX
-
20
- µs
Soft Start Time
tSS - 6 - ms 0V to (VREF×90%)
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/28
TSZ02201-0J1J0AJ00910-1-2
29.Jun.2016 Rev.002
5 Page 
BD7F100HFN-LB BD7F100EFJ-LB
Application Examples
Exercise caution with the actual system since the characteristic changes with the board layout and the types of external parts
mounted, and etc.
T1
VIN
24V
10µF
VIN
SDX/EN
3:1
VOUT+
Z1
1000pF 63µH
D2
7µH
47µF
5V, 1A
RDUMMY
330Ω
BD7F100HFN-LB D1
1kΩ
VOUT-
COMP
AGND REF
SW
FB
PGND 80.6kΩ
3.9kΩ
T1 : Sumida Electric CEP1311D-2405051R
Z1 : ROHM KDZ18B
D1 : ROHM 1SS400SM
D2 : ROHM RB160M-40
VIN
24V
10µF
VIN
SDX/EN
Figure 17. 24V Input, 5V Output
T1
1:1:1
Z1
4700pF 50µH
D2
50µH 10µF
VOUT+
15V,165mA
RDUMMY
4.7kΩ
BD7F100HFN-LB D1
470Ω
COM
COMP
AGND REF
SW
FB
PGND
76.8kΩ
3.9kΩ
50µH
D3
10µF
RDUMMY
4.7kΩ
VOUT-
-15V, -165mA
T1 : Sumida Electric CEP1311D-2415052R
Z1 : ROHM KDZ18B
D1 : ROHM 1SS400SM
D2,D3 : ROHM RB160M-90
VIN
5V
10µF
Figure 18. 24V Input, ±15V Output
T1
1:2
VIN
SDX/EN
BD7F100HFN-LB
Z1
1000pF 10µH
1kΩ
D1
D2
40µH
VOUT+
5V, 200mA
RDUMMY
22µF 1kΩ
VOUT-
Part Number
CEP1311D-2405051R
CEP911B-2405051R
CEP1311D-2415052R
CEP911B-0505051R
COMP
AGND
SW
FB
REF PGND 13.3kΩ
3.9kΩ
T1 : Sumida Electric CEP911B-0505051R
Z1 : ROHM KDZ5.6B
D1 : ROHM 1SS400SM
D2 : ROHM RB160M-40
Figure 19. 5V Input, 5V Output
Table1. Recommended Transformers
Size (W×L×H)
[mm]
LP
[μH]
NP : NS
Vendor
13.5×20.0×12.5
10.0×10.0×11.5
13.5×20.0×12.5
10.0×10.0×11.5
63 3 : 1 Sumida Electric
63 3 : 1 Sumida Electric
50 1 : 1 : 1 Sumida Electric
10 1 : 2 Sumida Electric
Target Applications
VIN [V] VOUT [V] IOUT [A]
24 5
1
24 5 0.8
24 ±15 0.165
5 5 0.2
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/28
TSZ02201-0J1J0AJ00910-1-2
29.Jun.2016 Rev.002
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet BD7F100HFN-LB.PDF ] | |
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