April 21st, 2008
FULLY INTEGRATED BALLAST CONTROL IC
IC Features
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Programmable preheat time and frequency
Programmable ignition ramp
Protection from failure-to-strike
Lamp filament sensing and protection
Protection from operation below resonance -
0.2V CS threshold sync’d to falling edge on LO
Protection from low-line condition
Automatic restart for lamp exchange
Thermal overload protection
Programmable deadtime
Integrated 600V level-shifting gate driver
Integrated bootstrap MOSFET
Integrated 15.6V zener clamp diode on VCC
Low micro-power start-up
Latch immunity and ESD on all pins
Fluorescent lamp ballast
16-Lead SOIC (Narrow Body)
IRS21571D
Product Summary
Topology
V
OFFSET
I
O+
& I
O-
(typical)
Oscillator Frequency
Start-up current (typical)
Half-Bridge
600 V
180 mA & 260 mA
+/- 5%
150 µA
Package Options
Typical Application
•
Typical Connection Diagram
+ Rectified AC Line
+ V
BUS
R2
R1
VDC
HO
R
Supply
1
16
VS
C1
C
PH
C
RAMP
R
T
R
PH
R
RUN
CPH
R
GHS
C
BS
C
BLOCK
L
RES
IRS21571D
2
RPH
15
VB
3
RT
14
VCC
C
SNUBBER
C
VCC
4
RUN
13
COM
D1
D2
C
RES
5
CT
12
LO
6
C
T
R
OC
R
DT
DT
11
CS
R3
R
GLS
R5
R4
7
OC
10
SD
8
9
C2
R
CS
V
BUS
return
www.irf.com
© 2008 International Rectifier
IRS21571D
Table of Contents
Typical Connection Diagram
Qualification Information
Absolute Maximum Ratings
Recommended Operating Conditions
Electrical Characteristics
Functional Block Diagram
Input/Output Pin Equivalent Circuit Diagrams
Lead Definitions
Lead Assignments
State Diagram
Application Information and Additional Details
Package Details
Part Marking Information
Ordering Information
Change History
Page
1
4
5
6
7
9
10
11
12
13
14
25
26
27
28
www.irf.com
2
© 2008 International Rectifier
IRS21571D
Description
The IRS21571D is a fully integrated, fully protected 600V ballast control IC designed to drive virtually all types of
rapid start fluorescent lamp ballasts. Externally programmable features such as preheat time and frequency,
ignition ramp characteristics, and running mode operating frequency provide a high degree of flexibility for the
ballast design engineer. Comprehensive thermal overload, or lamp failure during normal operation, as well as an
automatic restart function, have been included in the design. The heart of this control IC is a variable frequency,
50% duty cycle oscillator with externally programmable deadtime. An integrated bootstrap MOSFET is also
included to supply the high-side gate drive circuitry. The IRS21571D is available in 16 pin narrow body SOIC
package.
www.irf.com
© 2008 International Rectifier
IRS21571D
Qualification Information
Qualification Level
†
Moisture Sensitivity Level
Machine Model
ESD
Human Body Model
IC Latch-Up Test
RoHS Compliant
†
††
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
†††
SOIC16N
(per IPC/JEDEC J-STD-020)
Class C
(per JEDEC standard EIA/JESD22-A115)
Class 3A
(per EIA/JEDEC standard JESD22-A114)
Class , Level A
(per JESD78)
Yes
Qualification standards can be found at International Rectifier’s web site
http://www.irf.com/
Higher qualification ratings may be available should the user have such requirements. Please contact your
International Rectifier sales representative for further information.
††† Higher MSL ratings may be available for the specific package types listed here. Please contact your
International Rectifier sales representative for further information.
www.irf.com
4
© 2008 International Rectifier
IRS21571D
Absolute Maximum Ratings
Absolute Maximum Ratings indicate sustained limits beyond which damage to the device may occur. All
voltage parameters are absolute voltages referenced to COM, all currents are defined positive into any lead.
The Thermal Resistance and Power Dissipation ratings are measured under board mounted and still air
conditions.
Symbol
V
B
V
S
V
HO
V
LO
I
OMAX
I
RT
V
CT
V
DC
I
CPH
I
RPH
I
RUN
I
DT
V
CS
I
CS
I
OC
I
SD
I
CC
dV/dt
P
D
P
D
R
θJA
R
θJA
T
J
T
S
T
L
†
Definition
High Side Floating Supply Voltage
High Side Floating Supply Offset Voltage
High-Side Floating Output Voltage
Low-Side Output Voltage
Maximum Allowable Output Current (Either Output) Due to
External Power Transistor Miller Effect
RT Pin Current
CT Pin Voltage
VDC Pin Voltage
CPH Pin Current
RPH Pin Current
RUN Pin Current
Deadtime Pin Current
Current Sense Pin Voltage
Current Sense Pin Current
Over-Current Threshold Pin Current
Shutdown Pin Current
Supply Current
Allowable Offset Voltage Slew Rate
(16-Pin DIP)
Package Power Dissipation @ T
A
≤
+25ºC
Package Power Dissipation @ T
A
≤
+25ºC (16-Pin SOIC)
Thermal Resistance, Junction to Ambient
(16-Pin DIP)
Thermal Resistance, Junction to Ambient (16-Pin SOIC)
Junction Temperature
Storage Temperature
Lead Temperature (Soldering, 10 seconds)
†
Min.
-0.3
V
B
- 25
V
S
- 0.3
-0.3
-500
-5
-0.3
-0.3
-5
-5
-5
-5
-0.3
-5
-5
-5
-20
-50
---
---
---
---
-55
-55
---
Max.
625
V
B
+ 0.3
V
B
+ 0.3
V
CC
+ 0.3
500
5
5.5
V
CC
+ 0.3
5
5
5
5
5.5
5
5
5
20
50
1.60
1.25
75
100
150
150
300
Units
V
V
V
V
mA
mA
V
V
mA
mA
mA
mA
V
mA
mA
mA
mA
V/ns
W
W
ºC/W
ºC/W
ºC
This IC contains a zener clamp structure between the chip V
CC
and COM which has a nominal
breakdown voltage of 15.6V. Please note that this supply pin should not be driven by a DC, low
impedance power source greater than the V
CLAMP
specified in the Electrical Characteristics section.
www.irf.com
© 2008 International Rectifier
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
