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IR1150LS Schematic ( PDF Datasheet ) - International Rectifier

Teilenummer IR1150LS
Beschreibung uPFC One Cycle Control PFC IC
Hersteller International Rectifier
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Gesamt 15 Seiten
IR1150LS Datasheet, Funktion
Data Sheet No. PD60230
IR1150S
IR1150IS
µPFC ONE CYCLE CONTROL PFC IC
Features
PFC with IR proprietary “One Cycle Control”
Continuous conduction mode (CCM) boost type PFC
No line voltage sense required
Programmable switching frequency (50kHz-200kHz)
Programmable output overvoltage protection
Brownout and output undervoltage protection
Cycle-by-cycle peak current limit
Soft start
User initiated micropower “Sleep Mode”
Description
Open loop protection
Maximum duty cycle limit of 98%
User programmable fixed frequency operation
Min. off time of 150-350ns over freq range
VCC under voltage lockout
Internally clamped 13V gate drive
Fast 1.5A peak gate drive
Micropower startup (<200 µA)
Latch immunity and ESD protection
Package
The µPFC IR1150 is a power factor correction (PFC) control IC designed to operate in continuous
conduction mode (CCM) over a wide range input line voltages. The IR1150 is based on IR's
proprietary "One Cycle Control" (OCC) technique providing a cost effective solution for PFC.
The proprietary control method allows major reductions in component count, PCB area and
design time while delivering the same high system performance as traditional solutions.
The IC is fully protected and eliminates the often noise sensitive line voltage sensing requirements
of existing solutions.
The IR1150 features include programmable switching frequency, programmable dedicated
8-Lead SOIC
over voltage protection, soft start, cycle-by-cycle peak current limit, brownout, open loop,
UVLO and micropower startup current.
In addition, for low standby power requirements (Energy Star, 1W Standby, Blue Angel, etc.), the IC can be driven into sleep
mode with total current consumption below 200µA, by pulling the OVP pin below 0.62V.
IR1150 Application Diagram
AC LINE
BR ID GE
V OUT
AC NEUTRAL
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IR 11 50
1 COM GATE 8
2 FREQ VCC 7
3 ISNS
VFB 6
4 OVP COMP 5
V cc
+
+
R TN
1






IR1150LS Datasheet, Funktion
IR1150S/IR1150IS
Block Diagram
OVP/EN 4
1.055VREF
ISNS 3
VFB 6
COMP 5
VREF
FAULT
Vm
1.0V
-
+
RESET
FAULT PROTECTION
OPEN LOOP PROTECTION
OUTPUT UNDER VOLTAGE
FAULT
Lead Assignments & Definitions
BIAS &
REFERENCES
UVLO
SLEEP
0.5V
CLOCK
MAX
DUTY CYCLE
LIMIT
SQ
RQ
FAULT
7 VCC
2 FREQ
8 GATE
1 COM
Lead Assignment
IR1150S
COM 1
8
FREQ 2
I SNS
3
7
6
OVP/EN 4
5
8 LEAD SOIC
GATE
V CC
VFB
COMP
Pin#
1
2
3
4
5
6
7
8
Symbol
Description
COM
FREQ
Ground
Frequency Set
I SNS
OVP/EN
Current Sense
Overvoltage Fault Detect / Enable
COMP Voltage Loop Compensation
VFB
VCC
GATE
Output Voltage Sense
IC Supply Voltage
Gate Drive Output
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IR1150LS pdf, datenblatt
IR1150S/IR1150IS
7.10 V
7.05 V
7.00 V
6.95 V
6.90 V
6.85 V
-50 °C
0 °C
50 °C 100 °C
Temperature
Fig. 5 - Reference Voltage
150 °C
50 uS
45 uS
40 uS
35 uS
30 uS
-50 °C
0 °C
50 °C 100 °C
Temperature
150 °C
Fig. 6 - Voltage Error Amplifier
Transconductance
60 uA
2.70
50 uA
40 uA
30 uA
20 uA
IO (source)
IO (sink)
2.60
2.50
2.40
10 uA
-50 °C
0 °C
50 °C 100 °C
Temperature
150 °C
Fig.7 - Voltage Error Amplifier
Source/Sink Current
2.30
-50 °C
0 °C
50 °C 100 °C
Temperature
150 °C
Fig. 8 - Current Sense Amplifier DC Gain
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