IR1150LS

Manufacturer Part NumberIR1150LS
DescriptionuPFC One Cycle Control PFC IC
ManufacturerInternational Rectifier
IR1150LS datasheet
 
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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
The PFC 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
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
BRIDGE
AC LI NE
AC NEUTRAL
www.irf.com
Data Sheet No. PD60230
PFC ONE CYCLE CONTROL PFC IC
Open loop protection
Maximum duty cycle limit of 98%
User programmable fixed frequency operation
Min. off time of 150-350ns over freq range
V
under voltage lockout
CC
Internally clamped 13V gate drive
Fast 1.5A peak gate drive
Micropower startup (<200 A)
Latch immunity and ESD protection
V c c
IR1150
1
8
COM
GATE
2
7
FREQ
VCC
3
6
ISNS
VFB
4
5
OVP
COMP
+
IR1150S
IR1150IS
Package
8-Lead SOIC
V OUT
+
RTN
1

IR1150LS Summary of contents

  • Page 1

    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 ...

  • Page 2

    Absolute Maximum Ratings Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. All voltages are absolute voltages referenced to COM. Thermal resistance and power dissipation are measured under board mounted and still air conditions. Parameters ...

  • Page 3

    Electrical Characteristics cont. The electrical characteristics involve the spread of values guaranteed within the specified supply voltage and junction temperature range T from – 25° 125°C. Typical values represent the median values, which are related to 25°C. If ...

  • Page 4

    Internal Voltage Reference Section Parameters Symbols Reference voltage Line regulation R Temp stability Total variation Voltage Error Amplifier Section Parameters Symbols Transconductance Source/sink current Soft start delay time (calculated) V voltage (fault) V COMP COMP FLT Effective V voltage V ...

  • Page 5

    Gate Driver Section Parameters Symbols Gate low voltage V Gate high voltage V Gate high voltage V Rise time Fall time Out peak current I Gate voltage @ fault V www.irf.com Min. Typ. Max. — 1.2 1.5 GLO — — ...

  • Page 6

    Block Diagram 4 OVP/EN 1.055V REF 3 I SNS REF COMP FAULT FAULT PROTECTION OPEN LOOP PROTECTION OUTPUT UNDER VOLTAGE Lead Assignments & Definitions Lead Assignment IR1150S 1 COM 2 FREQ I 3 ...

  • Page 7

    General Description The PFC IR1150 is intended for boost converters for power factor correction operating at a fixed frequency in continuous conduction mode. The IC operates with two loops; an inner current loop and an outer voltage loop. The inner ...

  • Page 8

    Detailed Pin Description COM: Ground This is the ground potential pin of the integrated con- trol circuit. All internal devices are referenced to this point Output Voltage Feedback FB The output voltage of the boost converter is sensed ...

  • Page 9

    Operating States UVLO Mode The IC remains in the UVLO condition until the voltage on the V pin exceeds the voltage ON. During the time the IC remains in the UVLO state, the gate drive ...

  • Page 10

    STATE & TRANSITIONS DIAGRAM V < 50%V V < REF CC CC UVLO LIMIT FAULT V ISNS V < -1.0V ISNS Present PulseTerminated V ISNS Oscillator Active V < ISNS V ...

  • Page 11

    Supply voltage Fig.1 - Supply Current 300 kHz 250 kHz 200 kHz 150 kHz 100 kHz 50 kHz 0 kHz 100 k Programming Resistor Fig. ...

  • Page 12

    V 7.05 V 7.00 V 6.95 V 6.90 V 6.85 V -50 °C 0 °C 50 °C Temperature Fig Reference Voltage -50 °C 0 °C ...

  • Page 13

    Vcc UVLO 82% V REF OLP SOFT START www.irf.com IR1150S/IR1150IS IR1150 Timing Diagrams NORMAL V Under Voltage Lockout cc NORMAL OVP Output Protection 13.0V (typ) 11.0V (typ) t UVLO 106% V REF 100% V REF 51% V REF 19% V ...

  • Page 14

    Case outline 0.25 [.010 0.25 [.010 NOTES: 1. DIMENSIONING & TOLERANCING PER ASME Y14.5M-1994. 2. CONTROLLING ...

  • Page 15

    Tape & Reel Information Dimensions are shown in millimeters (inches) 8.1 ( .318 ) 7.9 ( .312 ) NOTES: 1. OUTLINE CONFORMS TO EIA-481 & EIA-541. 2. CONTROLLING DIMENSION : MILLIMETER. NOTES : 1. CONTROLLING DIMENSION : MILLIMETER. 2. OUTLINE ...