IRS2573D [INFINEON]
HID BALLAST CONTROL IC; HID镇流器控制IC
| 型号： | IRS2573D |
| 厂家： | 
Infineon |
| 描述： | HID BALLAST CONTROL IC |
| 文件： | 总28页 (文件大小：496K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
March 29, 2010
Datasheet No – PD97477
IRS2573D
HID BALLAST CONTROL IC
Datasehet
Features
Product Summary
•
Buck, full-bridge and lamp control in one IC
Topology
Full-Bridge & Buck
Continuous/critical-conduction mode buck control
600V high and low-side full-bridge driver
600V high-side buck Driver
•
•
•
•
•
•
•
•
•
•
•
•
•
VOFFSET
VOUT
600 V
VCC
Low-side ignition FET gate driver
IO+, IO-, IO-Buck
(typical)
180mA, 260mA,
400mA
Integrated bootstrap FETs for full-bridge high-side drivers
Constant lamp power control
Deadtime (typical)
Duty Cycle
1.2 µs
Programmable buck cycle-by-cycle over-current protection
Programmable buck output voltage limitation
Programmable lamp current limitation
Programmable full-bridge frequency
50% ±1%
Package Options
Fault latch reset input
Programmable ignition counter (21sec/64sec typical)
Programmable lamp under-voltage fault counter
(197sec typical) for short-circuit or lamp does not warm-up
•
•
Fast transient lamp under-voltage event counter
(16384 typical) for arc instability or end-of-life
Programmable lamp over-voltage fault counter
(787sec typical) for open-circuit or lamp extinguishes
•
•
•
•
•
Programmable good fault reset counter (2730sec typical)
Micro-controller compatible timing thresholds
Internal 15.6V zener clamp diode on VCC
Micropower startup (150µA)
SOIC28W
Latch immunity and ESD protection on all pins
Typical Application Diagram
LBUCK
MBUCK
RCS
400VDC
BUS (+)
CBUCK
DBUCK
RVSENSE1
RVSENSE2
RB
RBB1
CS
VB1
R1
DHO1
DHO2
1
28
RDHO1
RDHO2
RBB2
RBB3
CBS1
CBUS
CCS
BUCK
HO1
RVSENSE3
MHS2
MLS2
2
27
MHS1
MLS1
RHO1
RLO1
RHO2
RLO2
TIGN
VSB
VS1
LAMP
3
26
CBB
VBB
DBS
LO1
4
25
RDB DBB
VCC
LO2
RDLO1
CBS2
DLO1
(+)
14VDC
(-)
5
24
DLO2 RDLO2
CVCC1
COM
CVCC2
VB2
6
23
RZX
ZX
HO2
7
22
CTOFF
CICOMP
CPCOMP
TOFF
VS2
8
21
ICOMP
IGN
DIGN
20
9
COV
ROV
COV
ROC
PCOMP
OV
19
10
IREF
OC
RIREF
CT
18
11
CT
ISENSE
RIGN
RISENSE
CISENSE
12
17
CTIGN
CTCLK
TIGN
VSENSE
MIGN
16
CVSENSE
RST
15
13
RVSENSE
CIGN
TCLK
14
RS
BUS (-)
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© 2010 International Rectifier
IRS2573D
Table of Contents
Page
Typical Application Diagram
1
Qualification Information
4
Absolute Maximum Ratings
Recommended Operating Conditions
Electrical Characteristics
Functional Block Diagram
Input / output Pin Equivalent Circuit Diagram
Lead Definitions
5
6
7
10
11
12
13
14
15
23
25
26
27
28
Lead Assignments
State Diagram
Application Information and Additional Details
Parameter Temperature Trends
Package Details
Package Details, Tape and Reel
Part Marking Information
Ordering Information
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© 2009 International Rectifier
2
IRS2573D
Description
The IRS2573D is a fully-integrated, fully-protected 600V HID control IC designed to drive all types of HID lamps.
Internal circuitry provides control for ignition, warm-up, running and fault operating modes. The IRS2573D
features include ignition timing control, constant lamp power control, programmable full-bridge running frequency,
programmable over and under-voltage protection and programmable over-current protection.
Advanced
protection features such as failure of a lamp to ignite, open load, short-circuit and a programmable fault counter
have also been included in the design.
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© 2009 International Rectifier
3
IRS2573D
Qualification Information†
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.
Qualification Level
MSL3††† 260°C
SOIC28W
Moisture Sensitivity Level
(per IPC/JEDEC J-STD-020)
Class B
Machine Model
Human Body Model
(per JEDEC standard JESD22-A115)
ESD
Class 2
(per EIA/JEDEC standard EIA/JESD22-A114)
Class I, Level A
(per JESD78)
Yes
IC Latch-Up Test
RoHS Compliant
†
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.
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© 2009 International Rectifier
4
IRS2573D
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
Definition
High-Side Floating Supply Voltage
High-Side Floating Supply Voltage
High-Side Floating Supply Voltage
High-Side Floating Supply Offset Voltage
High-Side Floating Supply Offset Voltage
High-Side Floating Supply Offset Voltage
High-Side Floating Output Voltage
High-Side Floating Output Voltage
High-Side Floating Output Voltage
Low-Side Output Voltage
Low-Side Output Voltage
Low-Side Output Voltage
Buck Current Sense Pin Voltage
Full-Bridge Oscillator Timing Pin Voltage
Ignition Timer Pin Voltage
Min.
-0.3
-0.3
-0.3
Max.
625
625
625
Units
V
B1
V
B2
V
BB
V
S1
V
V
V
V
V
V
– 25
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
+ 0.3
B1
B1
B2
V
S2
– 25
– 20
- 0.3
- 0.3
- 0.3
+ 0.3
+ 0.3
+ 0.3
+ 0.3
+ 0.3
+ 0.3
+ 0.3
+ 0.3
+ 0.3
+ 0.3
+ 0.3
+ 0.3
+ 0.3
+ 0.3
+ 0.3
+ 0.3
+ 0.3
B2
V
SB
BB
S1
S2
BB
V
HO1
B1
B2
V
HO2
V
BUCK
SB
BB
CC
CC
CC
V
LO1
-0.3
-0.3
-0.3
V
LO2
V
V
IGN
V
CS
V
- 0.3
SB
BB
V
CT
-0.3
-0.3
-0.3
-0.3
-0.3
-0.3
-0.3
-0.3
CC
CC
CC
CC
CC
CC
CC
CC
V
TIGN
V
TCLK
Fault Timer Pin Voltage
Reset Pin Voltage
Lamp Voltage Sense Pin Voltage
Lamp Current Sense Pin Voltage
Current Limitation Pin Voltage
V
RST
V
VSENSE
V
ISENSE
V
OC
V
OV
Voltage Limitation Pin Voltage
Maximum allowable output current (HO1, HO2, BUCK,
LO1, LO2, IGN) due to external power transistor miller
effect
I
-500
500
OMAX
I
Buck High-side Supply Current
-20
-5
-5
-5
-5
20
5
5
5
5
BB
I
Buck Current Sense Pin Current
Buck Compensation Pin Current
Buck Compensation Pin Current
Buck Zero-crossing Detection Pin Current
Buck Off-time Pin Current
CS
I
I
ICOMP
PCOMP
I
mA
ZX
I
-5
5
TOFF
Supply current†
Current Reference Pin Current
Allowable offset voltage slew rate
I
-20
-5
-50
20
5
50
CC
I
IREF
dVS/dt
V/ns
W
Package power dissipation @ TA ≤ +25
ºC
PD
SOIC28W
---
1.6
RΘJA
TJ
TS
Thermal resistance, junction to ambient SOIC28W
Junction temperature
Storage temperature
---
-55
-55
---
78
ºC/W
150
150
300
ºC
TL
Lead temperature (soldering, 10 seconds)
†
This IC contains a voltage clamp structure between the chip VCC and COM which has a nominal breakdown
voltage of 15.6 V. Please note that this supply pin should not be driven by a DC, low impedance power
source greater than the VCLAMP specified in the Electrical Characteristics section.
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© 2009 International Rectifier
5
IRS2573D
Recommended Operating Conditions
For proper operation the device should be used within the recommended conditions.
Symbol
VB1-VS1
VB2-VS2
VBB-VSB
VS1,VS2,VS
B
Definition
Min.
Max.
Units
High Side Floating Supply Voltage
High Side Floating Supply Voltage
High Side Floating Supply Voltage
VB1UV+
VB2UV+
VBBUV+
VCLAMP1
VCLAMP1
VCLAMP1
V
-1†
Steady State High-side Floating Supply Offset Voltage
600
VCC
ICC
Supply Voltage
VCC Supply Current
VCCUV+
VCLAMP1
10
††
†††
-1
I
V
BB
Supply Current
10
1
1
---
---
---
---
---
VCC
VCC
VCC
VCC
VCC
125
BB
mA
ICS
IZX
CTOFF
CT
CTIGN
CTCLK
RIREF
VRST
VVSENSE
VISENSE
VOC
Buck Current Sensing Pin Current
Buck Zero-crossing Sensing Pin Current
Buck Off-time Pin Capacitor
Full-bridge Oscillator Timing Pin Capacitor
Ignition Timer Pin Capacitor
Fault Counter Pin Capacitor
Current Reference Pin Resistor
Reset Pin Voltage
Voltage Sense Pin Voltage
Current Sense Pin Voltage
Current Limitation Pin Voltage
Voltage Limitation Pin Voltage
Junction Temperature
-1
470
10
10
10
10
0
0
0
0
0
pF
nF
kOhm
V
VOV
TJ
-40
ºC
†
Care should be taken to avoid output switching conditions where the V node flies inductively below
S
ground by more than 5 V.
†† Enough current should be supplied to the
pin to keep the internal 15.6 V zener diode clamping the
VCC
voltage at this pin.
††† Enough current should be supplied to the
pin to maintain a VBBSB voltage magnitude of VCLAMP1.
VBB
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© 2009 International Rectifier
6
IRS2573D
Electrical Characteristics
V
= V
B1S1
= V
B2S2
= V
BBSB
= V
BIAS
= 14V +/- 0.25V, C
= C
= C
= C
= C
=
=
CC
1000pF, R
LO1
LO2
IGN
HO1
HO2 BUCK
= 20kOhm, R = 10kOhm, R
= 50kOhm, V
= COM, CS = VSB, CT = TIGN = TCLK =
IREF
OC
OV
RST
VSENSE = ISENSE = PCOMP = ICOMP = ZX = TOFF = COM, T = 25C unless otherwise specified.
A
Symbol
Supply Characteristics
Definition
Min
9.5
Typ
Max Units Test Conditions
V
Supply Undervoltage Positive Going
CC
Threshold
Supply Undervoltage Negative
V
+
V
V
rising from 0V
falling from 14V
10.5
11.5
CCUV
CCUV
CC
V
CC
Going Threshold
V
V
-
8.5
0.5
9.5
1.0
10.5
1.5
CC
V
CC
Supply Undervoltage Lockout Hysteresis
V
I
UVHYS
UVLO Mode V
Fault Mode V
Quiescent Current
Quiescent Current
Supply Current
CC
V = 9V
CC
---
---
150
420
QCCUV
CC
CC
µA
I
QCCFLT
I
Quiescent V
---
3.5
---
---
QCC
VICOMP = VPCOMP = 4V,
CTOFF=1nF, CT=47nF,
CTIGN=1uF, CTCLK=0.12uF,
VSENSE=0.8V
mA
V
I
General Mode V
Supply Current
CC
---
5.0
CCGM
Zener Clamp Voltage
V
I
= 10mA
V
CC
14.6
15.6
16.6
CLAMP1
CC
Full-Bridge Floating Supply Characteristics
I
I
Quiescent V
Quiescent V
Supply Current
Supply Current
V
V
= V
---
---
50
80
---
---
QB1S1_0
BS
BS
HO1
S1
B1
µA
= V
QB1S1_1
HO1
V
Supply Undervoltage Positive
B1S1
Going Threshold
Supply Undervoltage Negative
V
rising from 0V
falling from 14V
V
V
8.0
7.0
9.0
8.0
10.0
9.0
B1S1
B1S1UV+
V
V
B1S1
Going Threshold
Offset Supply Leakage Current
V
B1S1
B1S1UV-
I
I
I
V
S1
V
V
V
= V = 600V
---
---
---
---
50
80
50
---
---
LKVS1
QB2S2_0
QB2S2_1
B1 S1
Quiescent V
Quiescent V
Supply Current
Supply Current
µA
= V
BS
BS
HO2
HO2
S2
= V
B2
V
Supply Undervoltage Positive
B2S2
Going Threshold
Supply Undervoltage Negative
V
rising from 0V
V
8.0
9.0
10.0
B2S2
B2S2UV+
V
V
B2S2
Going Threshold
Offset Supply Leakage Current
V
falling from 14V
V
I
7.0
---
8.0
---
9.0
50
B2S2
B2S2UV-
V
S2
V
= V = 600V
B2 S2
µA
LKVS2
Buck Floating Supply Characteristics
Zener Clamp Voltage
V
I
I
= 10mA
= V
SB
V
19.8
---
20.8
360
21.8
V
CLAMP2
BB
BB
Quiescent V
Supply Current
V
BUCK
VICOMP = VPCOMP = 4V,
CTOFF = 1nF
µA
QBBSB_0
BBSB
BBSB
I
V
Supply Current
---
1
---
mA
V
BBSB
BBSB
V
Supply Undervoltage Positive
V
rising from 0V
BBSB
VICOMP = VPCOMP = 0.5V
V
8.0
9.0
10.0
BBSBUV+
Going Threshold
V
Supply Undervoltage Negative
V
falling from 14V
BBSB
Going Threshold
Offset Supply Leakage Current
BBSB
VICOMP = VPCOMP = 0.5V
V
I
7.0
8.0
9.0
BBSBUV-
V
SB
V
BB
= V = 600V
SB
---
1.03
50
---
1.18
120
50
1.33
190
µA
V
ns
LKVSB
V
CS
CS pin over-current threshold
CS pin current-sensing blank time
VICOMP = VPCOMP = 4V
t
BLANK
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© 2009 International Rectifier
7
IRS2573D
Electrical Characteristics
V
= V
B1S1
= V
B2S2
= V
BBSB
= V
BIAS
= 14V +/- 0.25V, C
= C
= C
= C
= C
=
=
CC
1000pF, R
LO1
LO2
IGN
HO1
HO2 BUCK
= 20kOhm, R = 10kOhm, R
= 50kOhm, V
= COM, CS = VSB, CT = TIGN = TCLK =
IREF
OC
OV
RST
VSENSE = ISENSE = PCOMP = ICOMP = ZX = TOFF = COM, T = 25C unless otherwise specified.
A
Symbol
Definition
Min
Typ Max
Units Test Conditions
Buck Control Characteristics
VPCOMP=7V
I
I
I
I
OTA1 Error Amplifier Output Current
Sourcing
PCOMP
SOURCE
V
V
= V
VSENSE
VSENSE PCOMP=0uA 0.3V
ISENSE =
28
40
40
40
40
52
52
52
52
–
VPCOMP=7V
PCOMP
SINK
V
= V
VSENSE
ISENSE =
OTA1 Error Amplifier Output Current Sinking 28
V
VSENSEPCOMP=0uA + 0.3V
VICOMP=7V
uA
OTA2 Error Amplifier Output Current
Sourcing
ICOMP
SOURCE
V
V
=
ISENSE
ISENSEICOMP=0uA – 0.5V
28
VICOMP=7V
ICOMP
SINK
V
V
=
ISENSE
ISENSEICOMP=0uA + 0.5V
OTA2 Error Amplifier Output Current Sinking 28
I
I
=
PCOMP
PCOMP_SOURCE
– 10uA,
OTA1,2 Error Amplifier Output Voltage
Swing (high state)
V
COMPOH
---
12.5
2.0
---
---
V
or I
I
ICOMP =
ICOMP_SOURCE – 10uA
V
V
V
V
V
=
VSENSE
VSENSE(PCOMP = 0uA)
ISENSE
VSENSE
ISENSE
Internal Multiplier Gain
---
,
K
MULT
KMULT = VIREF/ ( 2x V
x V
)
VSENSE
ISENSE
= 500mV
= 1V
= 500mV
V
x V
ISENSE
PSENSE
0.465 0.50 0.535
VSENSE
V
VICOMP = 2V
VPCOMP = 2V
VPCOMP = 2V
PCOMP pin buck on/off threshold voltage
---
---
---
---
---
---
91
0.2
0.2
0.5
2.0
400
6.5
110
---
---
---
---
---
PCOMPTH
V
ICOMPTH- ICOMP pin buck off threshold voltage
ICOMPTH+ ICOMP pin buck on threshold voltage
V
V
VPCOMP = VICOMP = 7V
VPCOMP = VICOMP = 7V
V
V
V
I
ZX pin Comparator Threshold Voltage
ZX pin Comparator Hysteresis
ZX pin Clamp Voltage (high state)
TOFF pin Output Current
ZX
ZXhys
ZXclamp
mV
V
uA
I
= 5mA
---
129
ZX
VBUCK = VSB
VPCOMP = VICOMP = 7V
CTOFF = 1nF
TOFF
V
TOFF pin Comparator Threshold Voltage
1.93
2.05
2.17
V
TOFF
Full-Bridge Oscillator Characteristics
f
d
Full-Bridge oscillator frequency
Oscillator duty cycle
160
49
200
50
240
51
Hz
%
OSC
C
= 47nF
CT
td
td
V
LO1, LO2 output deadtime
HO1, HO2 output deadtime
CT pin upper threshold voltage
CT pin lower threshold voltage
0.8
0.8
---
1.2
1.2
4.0
2.0
1.5
1.5
---
LO1,2
HO1,2
CT+
CT-
us
V
V
---
---
I
CT
SOURCE
V
= 1.5V
= 4.5V
CT pin sourcing current
CT pin sinking current
---
---
80
80
---
---
CT
CT
uA
I
CT
SINK
V
Ignition Timer Characteristics
T
T
V
IGN pin on-time
IGN pin off-time
TIGN pin upper threshold voltage
TIGN pin lower threshold voltage
18
57
---
---
21
64
4.0
2.0
24
71
---
---
C
= 1uF
IGNON
IGNOFF
TIGN
sec
V
MODE = IGN
TIGN+
TIGN-
TIGN
V
I
V
V
= 1.5V
= 4.5V
TIGN pin sourcing current
TIGN pin sinking current
---
---
6
6
---
---
TIGN
SOURCE
uA
I
TIGN
TIGN
SINK
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© 2009 International Rectifier
8
IRS2573D
Electrical Characteristics
V
= V
B1S1
= V
B2S2
= V
BBSB
= V
BIAS
= 14V +/- 0.25V, C
= C
= C
= C
= C
=
=
CC
1000pF, R
LO1
LO2
IGN
HO1
HO2 BUCK
= 20kOhm, R = 10kOhm, R
= 50kOhm, V
= COM, CS = VSB, CT = TIGN = TCLK =
IREF
OC
OV
RST
VSENSE = ISENSE = PCOMP = ICOMP = ZX = TOFF = COM, T = 25C unless otherwise specified.
A
Symbol
Definition
Min
Typ Max
Units Test Conditions
Fault Counter Characteristics
T
C
= 0.12uF
CLK pin oscillation period
TCLK pin upper threshold voltage
TCLK pin lower threshold voltage
---
---
---
12.0
4.0
2.0
---
---
---
ms
V
CLK
TCLK
V
V
TCLK+
TCLK-
TCLK
I
V
= 1.5V
TCLK pin sourcing current
TCLK pin sinking current
GOOD COUNTER time
---
---
40
40
---
---
TCLK
TCLK
SOURCE
uA
I
TCLK
V
= 4.5V
= 1uF,
= 0.8V
= 0.12uF,
SINK
C
TIGN
t
---
2850
197
787
---
GOOD
V
VSENSE
VSENSE pin under-voltage fault counter
time
VSENSE pin over-voltage fault counter
time
C
TCLK
sec
t
187
737
207
837
UVFAULT
V
< VOV(1/7.5)
VSENSE
C
V
= 0.12uF,
> VOV(2/5)
TCLK
t
OVFAULT
VSENSE
V
= pulses
VSENSE
VSENSE pin fast transient under-voltage
fault events
n
16384
---
---
(ton=10us, toff=5us,
ampl.= 0.8V to COM)
EVENTS
V
RST pin rising threshold voltage
RST pin falling threshold voltage
---
1.5
---
---
2.5
---
MODE = FAULT
MODE = UVLO
RST+
V
V
V
RST-
Reference Current Characteristics
V
IREF
R
= 20kOhm
IREF
IREF pin reference voltage
1.95
2.00
2.05
Voltage Sensing Characteristics
VSENSE pin buck voltage limitation
threshold
VSENSE pin over-voltage threshold
VSENSE pin under-voltage threshold
V
2.3
2.55
1.05
2.8
OV
R
= 50kOhm
V
OV
OC
V
V
0.92
1.18
OV(2/5)
OV(1/7.5)
0.298 0.35 0.403
Current Limitation Characteristics
V
R
I
= 10kOhm
ISENSE pin current limitation threshold
460
520
580
mV
ISENSE
Gate Driver Output Characteristics (HO1, HO2, LO1, LO2, BUCK, IGN pins)
V
V
T
Low-Level output voltage
High-Level output voltage
Turn-On rise time
---
---
---
---
COM
VCC
120
50
---
---
OL
OH
= 0
V
O
220
100
r
f
ns
T
Turn-Off fall time
HO1, HO2, LO1, LO2, IGN Source
Current
IO+
---
180
---
IO-
IO+
IO-
HO1, HO2, LO1, LO2, IGN Sink Current
BUCK Source Current
BUCK Sink Current
---
---
---
260
180
400
---
---
---
mA
VICOMP = VPCOMP = 10V
Bootstrap MOSFET Characteristics (VB1, VB2 pins)
V
VB voltage when BS FET is on
VB source current when BS FET is on
13.0
---
13.7
55
---
---
V
B_ON
I
VBS=0V
B_CAP
V
= 10V
mA
VB
I
VB source current when BS FET is on
---
12
---
B_10V
CT = 0V, CT = 6V
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© 2009 International Rectifier
9
IRS2573D
Functional Block Diagram
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© 2009 International Rectifier
10
IRS2573D
Input/Output Pin Equivalent Circuit Diagrams: IRS2573D
VB1,
VB2
ESD
Diode
VBB
HO1,
HO2
25V
ESD
Diode
ESD
Diode
25V
BUCK
ESD
Diode
VS1,
VS2
600V
VSB
VCC
600V
25V
ESD
Diode
VCC
LO1,
LO2,
IGN
25V
COM
ESD
Diode
COM
VCC
VCC
IREF
ESD
Diode
ESD
Diode
RESD
OC,
OV
RESD
ESD
Diode
RESD
ESD
Diode
COM
COM
VCC
ESD
Diode
TOFF
RESD
RESD
ESD
Diode
COM
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© 2009 International Rectifier
11
IRS2573D
Lead Definitions
Symbol
Description
CS
BUCK
VSB
Buck Current-sensing Input
Buck High-side Floating Gate Driver Output
Buck High-side Floating Return
VBB
Buck High-side Floating Gate Driver Supply Voltage
IC Supply Voltage
VCC
COM
ZX
IC Power and Signal Ground
Buck Zero-Crossing Detection Input
TOFF
ICOMP
PCOMP
IREF
CT
Buck Off-time Programming Capacitor
Buck On-time Current Limit Compensation Capacitor
Buck On-time Constant Power Compensation Capacitor
Current Reference Programming Resistor
Full-Bridge Oscillator Timing Capacitor
Ignition Timer Programming Capacitor
Fault Timer Programming Capacitor
TIGN
TCLK
RST
Fault Reset Input
VSENSE
ISENSE
OV
Lamp Voltage Sensing Input
Lamp Current Sensing Input
ISENSE Over-current Threshold Programming Resistor
VSENSE Over-voltage Threshold Programming Resistor
Igniter Low-side Gate Driver Output
OV
IGN
VS2
Full-Bridge High-side Floating Return
Full-Bridge High-side Floating Gate Driver Output
Full-Bridge High-side Floating Gate Driver Supply Voltage
Full-Bridge Low-side Gate Driver Output
Full-Bridge Low-side Gate Driver Output
Full-Bridge High-side Floating Return
Full-Bridge High-side Floating Gate Driver Output
Full-Bridge High-side Floating Gate Driver Supply Voltage
HO2
VB2
LO2
LO1
VS1
HO1
VB1
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© 2009 International Rectifier
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IRS2573D
Lead Assignments
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© 2009 International Rectifier
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IRS2573D
State Diagram†
Power Turned On
FAULT Mode
UVLO Mode
Full-Bridge Off (CT=0V)
Buck Off (ICOMP, PCOMP,
TOFF=0V)
IGN Timer Off (TIGN=0V)
CLK Off (TCLK=0V)
IQCC 150 A
VCC < UVLO-
(VCC Fault or Power Down)
Fault Latch Set
Full-Bridge Off (CT=0V)
Buck Off
VCC < UVLO-
(Power Off)
or
RST > VRST+
(Fault Reset)
IGN Timer Off (TIGN=0V)
CLK Off (TCLK=0V)
IQCC 350 A
VCC = 15.6V
All Counters Reset
Fault and Good Counters Reset
Fault Latch Reset
VCC > UVLO+
and
VOV(2/5) < VSENSE < VOV
VSENSE > VOV
and
RST < VRST-
and
PCOMP > 0.2V
and
ICOMP > 0.5V
IGN Mode
IGN (21s 'HIGH'/64s 'LOW')
Ignition Counter Enabled
Buck and Full-Bridge Enabled
CLK and Fault Counters Enabled
Good Counter Reset
VSENSE > VOV(2/5) for 787sec
(open circuit)
VSENSE OVP Enabled
VSENSE > VOV(2/5)
VSENSE < VOV(2/5)
VSENSE < VOV(1/7.5) for 197sec
(short circuit or does not warm up)
or
GENERAL Mode
Full-Bridge Oscillating @ fBRIDGE
Buck Enabled
VSENSE < VOV(1/7.5) for 16384 Events
IGN 'LOW'
CLK and Fault Counters Enabled
VSENSE OVP Enabled
ISENSE Over-current Limitation Enabled
Constant Power Control Enabled
Good Counter = 2730sec
(No faults detected)
VSENSE > VOV
or
PCOMP < 0.2V
or
ICOMP < 0.2V
VSENSE < VOV(1/7.5)
Reset
Fault and Good
Counters
Reset
Good
Counter
BUCK OFF Mode
VSENSE < VOV(2/5)
Buck Off
and
PCOMP > 0.2V
Full-Bridge Oscillating
Fault Counters Enabled
and
ICOMP > 0.5V
†
All values are typical. Applies to application circuit on page 1.
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© 2009 International Rectifier
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IRS2573D
Application Information and Additional Details
Information regarding the following topics is included as subsections within this section of the datasheet.
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
IGBT/MOSFET Gate Drive
Undervoltage Lockout Protection
General Mode
Ignition Timer
Full-Bridge Control
Buck Control
Constant Power Control
Current Limitation Control
Over Voltage Fault Counter
Under Voltage Fault Counter
Fast Transient Under-Voltage Fault Counter
Good Counter
Fault Reset
PCB Layout Tips
Additional Documentation
IGBT/MOSFET Gate Drive
The IRS2573D HVICs are designed to drive up to six MOSFET or IGBT power devices. Figures 1 and 2 illustrate
several parameters associated with the gate drive functionality of the HVIC. The output current of the HVIC, used
to drive the gate of the power switch, is defined as IO. The voltage that drives the gate of the external power
switch is defined as VHO for the high-side power switch and VLO for the low-side power switch; this parameter is
sometimes generically called VOUT and in this case does not differentiate between the high-side or low-side output
voltage.
VB
VB
(or VCC
)
(or VCC)
IO+
HO
HO
(or LO)
(or LO)
+
IO-
VHO (or VLO)
-
VS
VS
(or COM)
(or COM)
Figure 1: HVIC sourcing current
Figure 2: HVIC sinking current
Undervoltage Lock-Out
The under-voltage lockout mode (UVLO) is defined as the state the IC is in when VCC is below the turn-on
threshold of the IC. The IC is designed to maintain an ultra-low supply current during UVLO mode of 150uA for
reducing power losses across the external start-up resistor, and, to guarantee the IC is fully functional before the
buck high-side and full-bridge high and low-side output drivers are activated. The external capacitor from VCC
to COM is charged by a current flowing from the rectified AC line or DC bus through an external supply resistor
minus the micro-power start-up current drawn by the IC. The external start-up resistor is chosen so that VCC
exceeds the IC turn-on threshold at the desired AC line turn-on voltage for the ballast. Once the capacitor voltage
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© 2009 International Rectifier
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IRS2573D
on VCC reaches the start-up threshold (UVLO+), and, the voltage on RST pin is less than 1.5V, the IC turns on
and the full-bridge oscillator (CT) and gate driver outputs (HO1, LO1, HO2 and LO2) begin to oscillate. The
capacitor from VCC to COM begins to discharge due to the increase in IC operating current. An auxiliary supply
(secondary winding, charge pump, etc.) should then take over as the main supply voltage before VCC discharges
to the IC turn-off threshold (Figure 3) and charge VCC up to the internal zener clamp diode voltage (15.6V
typical). During UVLO mode, the full-bridge and buck are off, the ignition timer and clock are off, the fault and
good counters are reset, and the fault latch is reset.
VCC
IC 'OFF'
IC 'ON'
INTERNAL VCC
ZENER CLAMP VOLTAGE
CVCC
DISCHARGE
VUVLO+
VHYST
VUVLO-
DISCHARGE
TIME
AUXILIARY SUPPLY
OUTPUT
RSUPPLY & CVCC
TIME CONSTANT
t
Figure 3, IC supply voltage during turn-on
General Mode
During General Mode, the IC reacts to the different load conditions (open-circuit, short-circuit, lamp warm-up,
constant power running, under-voltage lamp faults, transient under-voltage lamp faults, over-voltage lamp faults,
lamp non-strike, etc.) by turning the buck circuit on or off, adjusting the buck circuit on-time, or counting the
occurrence of the different fault conditions and turning the complete IC off. The IC senses the different load
conditions at the VSENSE and ISENSE pins, compares the voltages at these pins against the programmed
thresholds at the OV and OC pins, and determines the correct operating mode of the IC (see State Diagram).
Ignition Timer
The ignition timer is enabled when the IC first enters IGN Mode. The ignition timer frequency is programmed with
the external capacitor at the TIGN pin. CTIGN charges up and down linearly through internal sink and source
currents between a fixed voltage window of 2V and 4V (Figure 4). This sets up an internal clock (666ms typical)
that is divided out 128 times and then used to turn the ignition gate driver output (IGN pin) on and off for a given
on and off-time (21sec ‘high’/64sec ‘low’ typical). A logic ‘high’ at the IGN pin will turn the external ignition
MOSFET on and enable the external sidac-controlled pulse ignition circuit (see Figure 5, and Typical Application
Diagram). The ignition circuit will continuously try to ignite the HID lamp for 21sec ‘on’ and 64sec ‘off’ until the
lamp ignites. If the lamp does not ignite after 787sec then the IC will enter Fault Mode and latch off. If the lamp
ignites successfully, the voltage at the VSENSE pin will fall below VOV(2/5) due to the low impedance of the lamp
and the ignition timer will be disabled (logic ‘low’ at the IGN pin).
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© 2009 International Rectifier
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IRS2573D
666ms
typ.
4V
TIGN
2V
IGN
VLAMP
0V
IGN ENABLED
(21s typ.)
IGN DISABLED
(64s typ.)
IGN ENABLED
(21s typ.)
FAULT
MODE
787sec typ.
Figure 4, Ignition timer timing diagram
VGATE:MIGN
VCIGN
VCBUCK
VDIAC
t
4KV
VLAMP
t
Figure 5, Ignition circuit timing diagram.
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© 2009 International Rectifier
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IRS2573D
Full-Bridge Control
The IC includes a complete high and low-side full-bridge driver necessary for driving the HID lamp with an AC
square-wave voltage. The full-bridge begins oscillating at the programmed frequency immediately when the IC
comes out of UVLO Mode and turns on. The full-bridge is typically driven at a low frequency to prevent acoustic
resonances from damaging the lamp. The full-bridge frequency is programmed with the external capacitor at the
CT pin. CT charges up and down linearly through internal sink and source currents between a fixed voltage
window of 2V and 4V. CT reaching 4V initiates the toggling of LO1/HO1, and LO2/HO2 respectively (see Figure 6).
The dead-time is fixed internally at 1.0us typical. During the dead-time, all full-bridge MOSFETs are off and the
mid-points of each half-bridge are floating or unbiased. Should an external transient occur during the dead-time
due to an ignition voltage pulse, each half-bridge mid-point (VS1 and VS2 pins) can slew high or low very quickly
and exceed the dv/dt rating of the IC. To prevent this, internal logic guarantees that the IGN pin is set to a logic
‘low’ during the dead-time. No ignition pulses can occur until the dead-time has ended and the appropriate full-
bridge MOSFETs are turned on. This will guarantee that the mid-points are biased to the output voltage of the
buck or COM before an ignition pulse occurs. The full-bridge stops oscillating only when the IC enters Fault
Mode or UVLO Mode.
4V
CT
2V
LO1, HO2
LO2, HO1
Dead-time
Dead-time
VS1
VS2
VLAMP
0V
Figure 6, Full-bridge Timing Diagram
Buck Control
The buck control circuit operates in critical-conduction mode or continuous-conduction mode depending on the
off-time of the buck output or the peak current flowing through the buck MOSFET. During normal lamp running
conditions, the voltage across the buck current sensing resistor, as measured by the CS pin, is below the internal
over-current threshold (1.2V typical). The buck on-time is defined by the time it takes for the internal on-time
capacitor to charge up to the voltage level on the PCOMP pin or ICOMP pin, whichever is lower. During the on-
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© 2009 International Rectifier
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IRS2573D
time, the current in the buck inductor charges up to a peak level, depending on the inductance value, and the
secondary winding output of the buck inductor is at some negative voltage level, depending on the ratio between
the primary and secondary windings. The secondary winding output is measured by the ZX pin, which clamps the
negative voltage to a diode drop below COM using the internal ESD diode, and limits the resulting negative
current flowing out of the pin with an external resistor, RZX. When the voltage on the internal on-time capacitor
exceeds the voltage on the PCOMP pin or ICOMP pin, the on-time has ended and the buck output turns off. The
secondary winding output of the buck inductor transitions to some positive voltage level, depending on the ratio
between the primary and secondary windings, and causes the ZX pin to exceed the internal 2V threshold. The
current in the buck inductor begins to discharge into the lamp full-bridge output stage. When the inductor current
reaches zero, the ZX pin decreases back below the 2V threshold. This causes the internal logic of the buck
control to start the on-time cycle again. This mode of operation is known as critical-conduction mode because
the buck MOSFET is turned on each cycle when the inductor current discharges to zero. The on-time is
programmed by the voltage level on the PCOMP pin, and the off-time is determined by the time it takes for the
inductor current to discharge to zero, as measured by a negative-going edge on the ZX pin (Figure 7). The
resulting shape of the current in the inductor is triangular with a peak value determined by the inductance value
and on-time setting.
During lamp warm-up or a short-circuit condition at the output, the inductor current will charge up to an excessive
level that can saturate the inductor or damage the buck MOSFET. To prevent this condition, the buck current
sensing resistor is set such that the voltage at the CS pin exceeds the internal over-current threshold (1.2V
typical) before the inductor saturates. Should the CS pin exceed 1.2V before the internal on-time capacitor
reaches the voltage level on the PCOMP pin or ICOMP pin, the on-time will end and the buck output will turn off.
The off-time is determined by a negative-going edge on the ZX pin, or, if the maximum off time is reached as
programmed by the time it takes for the external capacitor on the TOFF pin to charge up to an internal threshold
of 2V. If the maximum off-time is reached before the inductor current discharges to zero, then the inductor will
begin charging again from some value above zero. This mode of operation is known as continuous-conduction
mode and results in a continuous DC current in the inductor with a ripple bounded above by the over-current
threshold and below by the maximum off time setting. Continuous-conduction mode also allows for a higher
average current to flow through the buck inductor before saturation occurs than with critical-conduction mode.
UVLO+
VCC
VPCOMP
0.2V
CTON
BUCK
1.2V
ILBUCK
Critical Conduction Mode
Continuous Conduction Mode
ZX
2V
TOFF
Figure 7, Buck circuit timing diagram
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© 2009 International Rectifier
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IRS2573D
Constant Power Control
During the general mode of operation and after the lamp has ignited, the IC regulates the lamp output power to a
constant level. To achieve this, the IC measures the lamp voltage and lamp current at the VSENSE and
ISENSE pins, multiplies the voltage and current together using an internal multiplier circuit to calculate power, and
regulates the output of the multiplier circuit to a constant reference voltage by increasing or decreasing the buck
on-time. If the lamp power is too low then the output of the multiplier will be below the internal reference voltage.
The operational trans-conductance amplifier (OTA) will output a sourcing current to the PCOMP pin that will
charge up the external capacitor to a higher voltage. This will increase the on-time of buck and increase the
output current to the lamp for increasing the output power. If the lamp power is too high, then the opposite will
occur. The OTA will output a sinking current to the PCOMP pin that will discharge the external capacitor to a
lower voltage. This will decrease the buck on-time and decrease the output current to the lamp for decreasing
the output power. The speed of the constant power control loop is set by the value of the external capacitor at
the PCOMP pin that determines how fast the loop will react and adjust the buck on-time over the changing load
conditions.
Current Limitation Control
The constant power control loop will increase or decrease the buck current for maintaining constant power in the
lamp load. During lamp warm-up, the lamp voltage can be very low (20V typical) and the constant power loop
will attempt to increase the buck current to several amps of current to maintain constant power. This high
current can exceed the manufacturer’s maximum current rating for the HID lamp. To prevent this condition, an
additional current limitation control loop has been included in the IC. Should the voltage at the ISENSE pin
exceed the voltage level at the OC pin, another OTA will sink current from the ICOMP pin. When the ICOMP pin
voltage decreases below the PCOMP pin voltage, then the current limitation loop will override the constant power
loop and the ICOMP pin will decrease the buck on-time. The lower of the PCOMP or ICOMP pins will override
the other and control the buck on-time. When the lamp eventually warms up and the lamp voltage increases to a
level where the lamp current is below the maximum allowable limit (Figure 8), then the ICOMP pin voltage will
increase above the PCOMP pin voltage, and the PCOMP pin will control the buck on-time again for maintaining
constant power.
V, I
Lamp Warm-up
Running
VSENSE
POWER
ISENSE
t
Current
Limitation
Ignition
Constant Power
Figure 8, VSENSE and ISENSE pins during ignition, warm-up and running modes.
Over-Voltage Fault Counter
The IC includes an over-voltage fault counter at the VSENSE pin. The over-voltage fault counter will count the
time during which an over-voltage condition at the output of the buck exists due to an open-circuit condition,
lamp extinguishes, lamp removal or end-of-life. If the voltage at the VSENSE pin remains above VOV(2/5) and
the over-voltage fault counter times out (787sec typical), then the IC will enter Fault Mode and shutdown. If the
voltage at the VSENSE pin decreases below VOV(2/5) before the over-voltage fault counter times out, then the
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© 2009 International Rectifier
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IRS2573D
lamp has successfully ignited and the IC will enter General Mode. The IGN pin (ignition gate driver output) will
remain ‘high’ until the ignition timer has timed out.
Under-Voltage Fault Counter
The IC also includes an under-voltage fault counter at the VSENSE pin. Once the lamp has ignited, the lamp
voltage will decrease sharply to a very low voltage (20V typical). As the lamp warms up, the lamp voltage will
slowly increase until the nominal running voltage is reached (100V typical). If the lamp voltage remains too low
for too long, then this is a lamp fault condition and the ballast must shutdown. To detect this, the VSENSE pin
includes an under-voltage threshold of VOV(1/7.5). If the voltage at the VSENSE pin remains below VOV(1/7.5)
and the under-voltage fault counter times out (197sec typical), then the lamp is not warming up properly due to a
lamp fault condition (end of life, etc.) and the IC will enter fault mode and shutdown. If the voltage at the
VSENSE pin increases above VOV(1/7.5) before the under-voltage counter times out, then the lamp has
successfully warmed up and the IC will remain in general mode. A fast transient under-voltage detection is also
included at the VSENSE pin of the IC.
Fast Transient Under-Voltage Fault Counter
During normal running conditions, fast transient under-voltage spikes can occur on the lamp voltage due to
instabilities in the lamp arc. The resulting transients on the VSENSE pin will cycle below and above the
VOV(1/7.5) threshold quickly (<50us). If the number of events of these transients exceeds the maximum number
of events of the fault counter (16384 events typical), then the IC will enter fault mode and shutdown.
Good Counter
If no faults are detected for a long period of time (2730sec typical), as measured by the good counter, then the
fault counter and good counter will both be reset to zero. Also, each time a fault is counted, the good counter is
reset to zero.
Fault Reset
To exit Fault Mode and return to UVLO Mode, VCC can be decreased below UVLO- and back above UVLO+, or,
the RST pin can be increased above 2.5V.
PCB Layout Tips
Distance between high and low voltage components: It’s strongly recommended to place the components tied to
the floating voltage pins (VB and VS) near the respective high voltage portions of the device.
Ground Plane: In order to minimize noise coupling, the ground plane should not be placed under or near the high
voltage floating side.
Gate Drive Loops: Current loops behave like antennas and are able to receive and transmit EM noise (see Figure
9). In order to reduce the EM coupling and improve the power switch turn on/off performance, the gate drive loops
must be reduced as much as possible. Moreover, current can be injected inside the gate drive loop via the IGBT
collector-to-gate parasitic capacitance. The parasitic auto-inductance of the gate loop contributes to developing a
voltage across the gate-emitter, thus increasing the possibility of a self turn-on effect.
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© 2009 International Rectifier
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IRS2573D
Figure 9: Antenna Loops
Supply Capacitor: It is recommended to place a bypass capacitor (CIN) between the VCC and VSS pins.
A
ceramic 1 μF ceramic capacitor is suitable for most applications. This component should be placed as close as
possible to the pins in order to reduce parasitic elements.
Routing and Placement: Power stage PCB parasitic elements can contribute to large negative voltage transients
as the switch node; it is recommended to limit the phase voltage negative transients. In order to avoid such
conditions, it is recommended to 1) minimize the high-side emitter to low-side collector distance, and 2) minimize
the low-side emitter to negative bus rail stray inductance. However, where negative VS spikes remain excessive,
further steps may be taken to reduce the spike. This includes placing a resistor (5 Ω or less) between the VS pin
and the switch node (see Figure 10), and in some cases using a clamping diode between VSS and VS (see Figure
11). See DT04-4 at www.irf.com for more detailed information.
Figure 10: VS resistor
Figure 11: VS clamping diode
Additional Documentation
Several technical documents related to the use of HVICs are available at www.irf.com; use the Site Search
function and the document number to quickly locate them. Below is a short list of some of these documents.
DT97-3: Managing Transients in Control IC Driven Power Stages
AN-1123: Bootstrap Network Analysis: Focusing on the Integrated Bootstrap Functionality
DT04-4: Using Monolithic High Voltage Gate Drivers
AN-978: HV Floating MOS-Gate Driver ICs
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© 2009 International Rectifier
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IRS2573D
Parameter Temperature Trends
2.500
1
0.75
0.5
2.250
2.000
1.750
1.500
0.25
0
-25
0
25
50
75
100
125
-25
0
25
50
75
100
125
Temperature ºC
Temperature ºC
Fig. 11 VIREF vs. Temperature
Fig. 12 VISENSE vs. Temperature
0.60
0.55
0.50
0.45
0.40
3.000
2.750
2.500
2.250
2.000
-25
0
25
50
75
100
125
-25
0
25
50
75
100
125
Temperature ºC
Temperature ºC
Fig. 14 VOV vs. Temperature
Fig. 13 PSENSE vs. Temperature
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© 2009 International Rectifier
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IRS2573D
1.500
1.250
1.000
0.750
0.500
1.000
0.750
0.500
0.250
0.000
-25
0
25
50
75
100
125
-25
0
25
50
75
100
125
Temperature ºC
Temperature ºC
Fig. 15 OV(2/5) vs. Temperature
Fig. 16 OV(1/7.5) vs. Temperature
200
150
100
50
2.500
2.250
2.000
1.750
1.500
0
-25
0
25
50
75
100
125
-25
0
25
50
75
100
125
Temperature ºC
Temperature ºC
Fig. 17 ITOFF vs. Temperature
Fig. 18 VTOFF vs. Temperature
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© 2009 International Rectifier
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IRS2573D
Package Details: SOIC28W
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© 2009 International Rectifier
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IRS2573D
Package Details: SOIC28W, Tape and Reel
LOADED TAPE FEED DIRECTION
A
B
H
D
F
C
NOTE : CONTROLLING
DIMENSION IN MM
E
G
CARRIER TAPE DIMENSION FOR 28SOICW
Metric
Imperial
Code
A
B
C
D
E
F
G
H
Min
11.90
3.90
23.70
11.40
10.80
18.20
1.50
Max
12.10
4.10
24.30
11.60
11.00
18.40
n/a
Min
Max
0.476
0.161
0.956
0.456
0.433
0.724
n/a
0.468
0.153
0.933
0.448
0.425
0.716
0.059
0.059
1.50
1.60
0.062
F
D
B
C
A
E
G
H
REEL DIMENSIONS FOR 28SOICW
Metric
Imperial
Min
Code
A
B
C
D
Min
329.60
20.95
12.80
1.95
Max
330.25
21.45
13.20
2.45
102.00
30.40
29.10
26.40
Max
13.001
0.844
0.519
0.096
4.015
1.196
1.145
1.039
12.976
0.824
0.503
0.767
3.858
n/a
E
F
98.00
n/a
G
H
26.50
24.40
1.04
0.96
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© 2009 International Rectifier
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IRS2573D
Part Marking Information
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© 2009 International Rectifier
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IRS2573D
Ordering Information
Standard Pack
Base Part Number
Package Type
Complete Part Number
Form
Quantity
Tube/Bulk
25
IRS2573DSPBF
SOIC28W
IRS2573D
Tape and Reel
1000
IRS2573DSTRPBF
The information provided in this document is believed to be accurate and reliable. However, International Rectifier assumes no responsibility
for the consequences of the use of this information. International Rectifier assumes no responsibility for any infringement of patents or of
other rights of third parties which may result from the use of this information. No license is granted by implication or otherwise under any
patent or patent rights of International Rectifier. The specifications mentioned in this document are subject to change without notice. This
document supersedes and replaces all information previously supplied.
For technical support, please contact IR’s Technical Assistance Center
http://www.irf.com/technical-info/
WORLD HEADQUARTERS:
233 Kansas St., El Segundo, California 90245
Tel: (310) 252-7105
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© 2009 International Rectifier
28
相关型号：
IRS2573DSPBF
Switching Controller, 240kHz Switching Freq-Max, PDSO28, ROHS COMPLIANT, MS-013AE, SOIC-28
INFINEON
IRS2573DSTRPBF
Switching Controller, 240kHz Switching Freq-Max, PDSO28, ROHS COMPLIANT, MS-013AE, SOIC-28
INFINEON
IRS25751L
EiceDRIVER™ 480 V 启动驱动器 IC，具有典型的 0 A 拉电流和 0 A 灌电流，采用 5 引脚 SOT23 封装，适用于 IGBT 和 MOSFET。
INFINEON
IRS25752LPBF
Buffer/Inverter Based Peripheral Driver, PDSO6, ROHS COMPLIANT, MO-178, SOT-23, 6 PIN
INFINEON
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