IRS29831PBF
LED FLYBACK CONTROL IC
Features
•
•
•
•
•
•
•
•
•
•
•
•
Flyback LED Driver
Integrated 700 V MOSFET
Critical-conduction / Transition mode operation
Primary constant power control
Burst mode operation at light load
Over-current protection
Micro power startup (150 μA)
Low quiescent current (2.5 mA)
Latch immunity and ESD protection
Open load / Over voltage protection
Compatible with Triac Dimmers
High Power Factor / Low THD
Product Summary
Topology
Drain Source Voltage
Max Drain Current
Max Converter Power
Flyback
700 V
0.65 A
25 W
Package
Typical Applications
•
LED Drivers
8-Lead DIP
Ordering Information
Standard Pack
Base Part Number
IRS29831PBF
Package Type
Form
DIP8
Tube/Bulk
Quantity
50
IRS29831PBF
Complete Part Number
1
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© 2014 International Rectifier
September 10, 2014
IRS29831PBF
Table of Contents
Ordering Information
Description
Absolute Maximum Ratings
Recommended Operating Conditions
Electrical Characteristics
Functional Block Diagram
State Diagram
Input/Output Pin Equivalent Circuit Diagram
Lead Definitions
Lead Assignments
Application Information and Additional Details
Package Details
Part Marking Information
Qualification Information
Page
1
3
4
4
5
7
8
9
10
10
11
15
16
17
2
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© 2014 International Rectifier
September 10, 2014
IRS29831PBF
Description
The IRS29831 is an integrated LED driver control IC and power MOSFET designed to drive Flyback and Buck-
Boost converter based LED drivers. The IRS29831 includes primary side power regulation allowing a low cost
isolated or non-isolated LED driver to be implemented without the need for an opto-isolator for a fixed LED load.
The IRS29831 is also compatible with converters that include secondary feedback circuitry. Other features of the
IRS29831 include a high voltage startup enabling VCC supply to be derived initially from the high voltage DC bus
until the auxiliary Flyback inductor winding takes over for rapid startup. The IRS29831 typically operates in critical
conduction (CrCM) with full protection against open and short circuit as well as inductor saturation. The IRS29831
may be used in single stage LED drivers with no DC bus smoothing capacitor enabling high power factor and low
THD with minimal component count.
Typical Connection Diagram (non-dimming)
CSNUB RSNUB
DFB
RIN
DVCC
DSNUB
T1
CIN
BR1
COMP
IC1
VDC
1
8
RZX1
RVCC
CVOUT
ROUT
IRS29831
ZX
HV
AC
Line
Input
2
CS
7
VCC
3
COM
6
DRN
4
CCOMP
5
RDC
CDC
RCS
RZX2
DZVCC
CVCC
3
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© 2014 International Rectifier
September 10, 2014
IRS29831PBF
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
DS
I
DS
I
DS
V
CC
I
CC
V
HV
I
HV
V
DS
V
COMP
V
DC
V
ZX
V
CS
I
COMP
I
DC
I
ZX
I
CS
P
D
R
θJA
T
J
T
S
T
L
Definition
Drain-Source Voltage
Drain Current at 25ºC
†
Drain Current at 100ºC
††
IC Low Voltage Supply
VCC current
HV Pin Voltage
HV Pin Current
Drain Pin Voltage
COMP Pin Voltage
VDC Pin Voltage
ZX Pin Voltage
VCS Pin Voltage
COMP Pin Current
VDC Pin Current
ZX Pin Current
CS Pin Current
Package Power Dissipation @ T
A
≤
+25ºC
P
D
= (T
JMAX
-T
A
)/R
θJA
Thermal Resistance, Junction to Ambient
Junction Temperature
Storage Temperature
Lead Temperature (soldering, 10 seconds)
†
Min.
---
---
---
-0.3
0
-0.3
0
-0.3
Max.
700.0
0.65
0.4
20.8
25.0
600
5.0
700
Units
V
A
V
mA
V
mA
V
-0.3
V
CC
+0.3
V
-5
5
mA
(8-Pin DIP)
(8-Pin DIP)
---
---
-55
-55
---
1
125
125
125
300
W
ºC/W
ºC
Recommended Operating Conditions
For proper operation the device should be used within recommended conditions.
Symbol
V
CC
I
CC
I
CS
I
DC
I
ZX
I
COMP
V
DC
V
CS
T
J
†:
Definition
Supply Voltage
V
CC
Supply Current
CS Pin Current
V
DC
Pin Current
ZX Pin Current
COMP Pin Current
V
DC
Pin Voltage
V
CS
Pin Voltage
Junction Temperature
Min.
V
CCUV+
Note 2
Max.
18
10
Units
V
-1
1
mA
0
0.1
-25
6.0
2.0
100
V
ºC
The MOSFET device used in this product is rated to 4A. It has been de-rated to conform to the thermal limits of the DIP8 package
assuming no heat sink is attached.
should not be driven by a DC, low impedance power source greater than the VCLAMP specified in the Electrical Characteristics section.
††:
This IC contains a zener clamp structure between the chip VCC and COM which has a nominal breakdown voltage of 20V. This supply pin
4
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© 2014 International Rectifier
September 10, 2014
IRS29831PBF
Electrical Characteristics
V
CC
= V
BIAS
=14V +/- 0.25V, C
OUT
= 1000pF,
V
COMP
= V
OC
= V
DC
= V
ZX
= 0V, T
A
=25ºC unless otherwise specified
Symbol
MOSFET Characteristics
Definition
Min
700.0
---
---
---
---
Typ
---
---
---
437.0
2.2
Max
---
0.65
1.4
---
---
Units Test Conditions
V
A
V
ns
μC
V
DSMAX
Maximum Drain-Source Voltage
I
DMAX
Maximum Continuous Drain Current
Source-Drain Diode Characteristics
V
SD
Diode Forward Voltage
T
rr
Reverse Recovery Time
Q
rr
Reverse Recovery Charge
Supply Characteristics
V
CC
Supply Under Voltage Positive Going
V
CCUV+
Threshold
V
CC
Supply Under Voltage Negative Going
V
CCUV-
Threshold
V
CC
Supply Under Voltage Lockout
V
UVHYS
Hysteresis
I
QCCUV
UVLO Mode V
CC
Quiescent Current
I
CC
V
CC
Supply Current
V
CLAMP
V
CC
Zener Clamp Voltage
High Voltage Startup Characteristics
V
HVSMIN
I
HV_CHARGE
I
HVS_OFF
Minimum Startup Voltage
V
CC
Charge Current
11.5
9.5
1.5
---
---
19.8
30.0
1
---
12.5
10.5
2.0
150
2.5
20.8
---
2
---
13.5
11.5
3.0
---
5.0
21.8
---
---
50
μA
mA
V
V
mA
μA
V
CC
< V
CCUV-
HV=100V~400V
HV=400V
V
CC
= 6V
I
CC
= 10mA
V
High Voltage Start-Up Circuit OFF State
Leakage Current
Error Amplifier Characteristics
COMP Pin Error Amplifier Output Current
I
COMPSOURCE
Sourcing
COMP Pin Error Amplifier Output Current
I
COMPSINK
Sinking
Error Amplifier Output Voltage Swing (high
V
COMPOH
state)
Error Amplifier Output Voltage Swing (low
V
COMPOL
state)
V
COMPFLT
Error Amplifier Output Voltage in Fault Mode
I
VDC
Input bias current
Control Characteristics
V
ZX+
ZX Pin Threshold Voltage (Arm)
V
ZX-
ZX Pin Threshold Voltage (Trigger)
V
PREF
K
MULT
t
BLANK
Power Regulation Reference
Multiplier Gain
OC pin current-sensing blank time
---
---
---
---
---
---
1.40
0.52
---
1.90
160
30
30
13.5
2.5
0
-1
1.54
0.6
1.00
2.00
200
---
μA
---
---
---
---
--
1.68
0.68
---
2.10
264
V
V
CS
=0.5V
V
DC
=2.5V
COMP=4.0V
CS=1.5V
September 10, 2014
V
GBD
V
DC
=0 to 3V
μA
ns
5
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© 2014 International Rectifier
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