Expand menu
Hello, Sign in
My Account
0
Cart
Home
Products
Sensors
Semiconductors
Passive Components
Connectors
Power
Electromechanical
Optoelectronics
Circuit Protection
Integrated Circuits - ICs
Main Products
Manufacturers
Blog
Services
About OMO
About Us
Contact Us
Check Stock
IR1155STRPBF
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
IR1155S
www.irf.com
7
© 2011 International Rectifier
Lead Assignments & Definitions
8
7
6
5
4
3
2
1
Lead Assignment
Pin#
Symbol
Description
1
2
3
4
5
6
7
8
COM
FREQ
ISNS
OVP
COMP
VFB
VCC
GATE
Ground
Frequency Se
t
Current Sense
Output Over Voltage Detect
/ Enable
Voltage Loop Comp
ensation
Output Voltage Sense
IC Supply Voltage
Gate Drive
Output
IR1155S
www.irf.com
8
© 2011 International Rectifier
Block Diagram
V
REF
VFB
COMP
V
COMP
Discharge
VOVP
VOLP
Q
S
R1
ISNS
V
m
OSCILLATOR
COM
VCC
GATE
RESET
OVP
V BIAS
V BIAS
V BIAS
V BIAS
V BIAS
VBIAS
MAX
DUTY CYC
LE
LIMIT
Blanking
Pulse at Ton
V BIAS
V BIAS
VCC
Q
RQ
S1
250mV
VISNS(PK)
OVP
VSLEEP
Enable
Comparator
(SLEEP MO
DE)
VBIAS
FREQ
RAMP
+
-
VSUMMER
V BIAS
UVLO
VOVP
= 106%
V
REF
V
REF
VOLP = 19%V
REF
Internal Rail
&
Precision
Reference
250mV
VSLEEP
VOUV = 50% V
REF
80% V
REF
OVP
VCC OK
PWM OFF
GATE OFF
GATE OFF
RESET
SET
MAX
DUTY
OCP
OSC
BLANK
0
VCOMP
Open Loop
Comparator
(Stand-By Mode)
SLEEP
(POWER
OFF)
UVLO/SLEEP
STNDBY
VCOMP Discharge
Threshold
Comparator
Overvoltage
Comparator
Peak
Overcurrent
Compar
ator
SLEEP
IR1155S
www.irf.com
9
© 2011 International Rectifier
State & Transition Diagrams
Note:
Soft-Start & Normal modes are essentially the same
(different
iation above is for purpose of clarity
only)
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
IR1155STRPBF
Mfr. #:
Buy IR1155STRPBF
Manufacturer:
Infineon Technologies
Description:
Power Factor Correction - PFC Prog FREQ 1 CYCLE Cntrl PFC IC
Lifecycle:
New from this manufacturer.
Delivery:
DHL
FedEx
Ups
TNT
EMS
Payment:
T/T
Paypal
Visa
MoneyGram
Western
Union
Products related to this Datasheet
IR1155STRPBF
IR1155SPBF
