Feb 28, 2011
IR1155S
PROGRAMMABLE FREQUENCY, ONE CYCLE CONTROL PFC IC
Features
• PFC IC with IR proprietary “One Cycle Control”
• Continuous conduction mode boost type PFC
• Programmable switching frequency (48k-200kHz)
• Average current mode control
• Output overvoltage protection
• Open loop protection
• Cycle by cycle peak current limit
• VCC under voltage lockout
• Programmable soft start
• Micropower startup
• User initiated micropower “Sleep Mode”
• OVP/EN pin internal filtering for higher noise immunity
• 1.5A peak gate drive
• Latch immunity and ESD protection
Description
The
μPFC
IR1155 power factor correction IC, based on IR proprietary "One
Cycle Control" (OCC) technique, provides for high PF, low THD and
excellent DC Bus regulation while enabling drastic reduction in component
count, PCB area and design time as compared to traditional solutions. The
IC is designed to operate in continuous conduction mode Boost PFC
converters with average current mode control over 85-264VAC input line
voltage range. Switching frequency can be programmed to anywhere
between 48kHz to 200kHz based on the specific application requirement.
In addition, IR1155 offers several advanced system-enabling and protective
features such as dedicated pin for over voltage protection, cycle by cycle
peak current limitation, open loop protection, V
CC
UVLO, soft-start and
micropower startup/sleep-mode with IC current consumption less than
200µA. The sleep mode, invoked by pulling the OVP/EN pin low, enables
compliance with standby power requirements mandated by regulations
such as Energy Star, Green Power, Blue Angel etc.
Package
IR1155 Application Diagram
AC LINE
VOUT
-
+
AC NEUTRAL
1
2
3
4
COM GATE
FREQ VCC
ISNS
VFB
8
7
6
5
VCC
OVP COMP
IR1155S
RTN
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© 2011 International Rectifier
IR1155S
Qualification Information
Qualification Level
Industrial
Comments: This family of ICs has passed JEDEC’s Industrial
qualification. IR’s Consumer qualification level is granted by
extension of the higher Industrial level.
MSL2 260°C
(per IPC/JEDEC J-STD-020)
Class A
(per JEDEC standard JESD22-A115)
Class 1B (passes 500V)
(per EIA/JEDEC standard EIA/JESD22-A114)
Class I, Level A
(per JESD78)
Yes
Moisture Sensitivity Level
Machine Model
ESD
Human Body Model
IC Latch-Up Test
RoHS Compliant
Absolute Maximum Ratings
Parameter
Symbol
VCC Voltage
FREQ Voltage
ISNS Voltage
VFB, OVP Voltage
COMP Voltage
GATE Voltage
ISNS Current
Junction Temperature
Storage Temperature
Thermal Resistance
Junction to Ambient
Package Power Dissipation
V
CC
V
FREQ
V
ISNS
V
FB
, V
OVP
V
COMP
V
GATE
I
ISNS
T
J
T
S
R
θJA
P
D
Min.
-0.3
-0.3
-10
-0.3
-0.3
-0.3
-2
-40
-55
Max.
20
6.5
0.3
6.5
6.5
18
2
150
150
128
976
Units
V
V
V
V
V
V
mA
°C
°C
°C/W
mW
Remarks
T
AMB
= 25°C
Recommended Operating Conditions
Recommended operating conditions for reliable operation with margin
Parameter
Supply Voltage
Junction Temperature
Switching Frequency
Symbol
V
CC
T
J
F
SW
Min.
12
-25
48
Typ.
Max.
19
125
200
Units
V
°C
kHz
Remarks
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© 2011 International Rectifier
IR1155S
Electrical Characteristics
The electrical characteristics involve the spread of values guaranteed within the specified supply voltage and
junction temperature range T
J
from –25 °C to 125°C. Typical values represent the median values, which are
related to 25°C.
If not otherwise stated, a supply voltage of V
CC
=15V is assumed for test condition.
Supply Section
Parameter
VCC Turn On
Threshold
VCC Turn Off
Threshold (Under
Voltage Lock Out)
VCC Turn On/Off
Hysteresis
Operating Current
Symbol
V
CC ON
V
CC UVLO
V
CC HYST
I
CC
Min.
10.65
9.2
Typ.
11.3
9.8
1.5
10
13
Max.
11.95
10.4
Units
V
V
V
mA
C
load
=1nF, F
SW
=181kHz
Standby Mode
(Inactive Gate,
Inactive Internal Oscillator)
V
FB
<V
OLP
See State Transition Diagram
V
CC
=V
CC ON
- 0.1V
Sleep Mode
(Inactive Gate,
Inactive Oscillator)
- V
OVP
<V
SLEEP,OFF
See State Transition Diagram
IC Enable threshold,
Bias on OVP pin
IC Disable threshold,
Bias on OVP pin
Remarks
6
8
mA
Startup Current
I
CCSTART
175
uA
Sleep Current
I
SLEEP
125
200
uA
Sleep Mode
Threshold (Enable)
Sleep Mode
Threshold (Disable)
V
SLEEP,ON
V
SLEEP,OFF
0.80
0.53
0.90
0.60
1.00
0.67
V
V
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© 2011 International Rectifier
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