TPS65560RGTR [TI]
INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVER; 集成闪光灯充电器和IGBT驱动器
| 型号： | TPS65560RGTR |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVER |
| 文件： | 总13页 (文件大小：945K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
RGT
TPS65560
www.ti.com
SLVS608–JANUARY 2006
INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVER
FEATURES
APPLICATIONS
•
•
•
•
Digital Still Cameras
Optical Film Cameras
Mobile Phones With Camera
PDAs With Camera
•
Highly Integrated Solution to Reduce
Components
•
•
•
•
•
•
•
•
•
•
Integrated Voltage Reference
Integrated 50-V Power Switch,
Integrated IGBT Driver
DESCRIPTION
High Efficiency
This device offers a complete solution for charging a
photo flash capacitor from battery input, and
subsequently discharging the capacitor to a xenon
flash tube. The device has an integrated voltage
reference, power switch, IGBT driver, and control
logic blocks for charging applications and driving
IGBT applications. Compared with discrete solutions,
this device reduces the component count, shrinks the
solution size, and eases designs for xenon tube
Programmable Peak Current, 0.9 A ~ 1.8 A
Input Battery Voltage of 1.6 V to 12 V
Optimized Control Loop for Fast Charge Time
Output Voltage Feedback From Primary Side
16-Pin QFN Package
Protection
– MAX On Time
applications. Additional advantages are
charging time and high efficiency from an optimized
PWM control algorithm.
a
fast
– MAX Off Time
– Overcurrent Shutdown to Monitor VDS at the
SW pin (OVDS
)
Other provisions of the device includes sensing the
output voltage from the primary side, programmable
peak current, thermal shutdown, an output pin for
charge completion, and input pins for charge enable
and flash enable.
– Thermal Disable
VA
VO
D1
T1
VCC
VCC
CO
IO
C2
C1
SW
VBAT
VI/F
VI/F
CHG
D
Q
F1
Controller
R1
0 Vds
XFULL
or
D
Q
F2
U1
ENA
VCC
V_FULL
ENA
D/A Conv
or
U0
Max ON
U2
LOGIC
I_PEAK
TSD
I_PEAK
Ref.
Analog
Circuit
Vref
PGND
SW
U3
or
VCC
G_IGBT
F_ON
ENA
SW1
IGBT
U4
NC
Figure 1. Typical Application Circuit
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2006, Texas Instruments Incorporated
TPS65560
www.ti.com
SLVS608–JANUARY 2006
These devices have limited built-in ESD protection. The leads should be shorted together or the device
placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
ORDERING INFORMATION
TA
PACKAGE MARKING
PACKAGE(1)
PART NUMBER
-35°C to 85°C
BPR
16-pin QFN
TPS65560RGT
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
Web site at www.ti.com.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted)
(1)
UNIT
VCC
-0.6 V to 6 V
-0.6 V to 13 V
-0.6 V to 50 V
3 A
VSS
Supply voltage
VBAT
V(SW)
I(SW)
VI
Switch terminal voltage
Switch current between SW and PGND, ISW
Input voltage of CHG, I_PEAK, F_ON
Storage temperature
-0.3 V to VCC
-40°C to 150°C
125°C
Tstg
TJ
Maximum junction temperature
ESD rating
HBM (Human Body Model) JEDEC JES22-A114
1 kV
(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings
only and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
RECOMMENDED OPERATING CONDITIONS
MIN
2.7
NOM
MAX
4
UNIT
V
Supply voltage, VCC
VSS
Supply voltage, VBAT
1.6
12
45
2
V
V(SW)
I(SW)
Switch terminal voltage,
-0.3
V
Switch current between SW and PGND
Operating free-air temperature range
High-level digital input voltage at CHG and F_ON
Low-level digital input voltage at CHG and F_ON
A
-35
2
85
°C
V
VIH
VIL
0.5
V
DISSIPATION RATINGS
POWER RATING
POWER RATING
POWER RATING
(1)
PACKAGE
RθJA
TA < 25°C
TA = 70°C
TA = 85°C
QFN
47.4 °C/W
2.11 W
1.16 W
844 mW
(1) The thermal resistance, RθJA, is based on a soldered PowerPAD™ on a 2S2P JEDEC board using thermal vias.
2
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TPS65560
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SLVS608–JANUARY 2006
ELECTRICAL CHARACTERISTICS
TA = 25°C, VBAT = 4.2 V, VCC = 3 V, V(SW) = 4.2 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
I(XFULL) = -1 mA
MIN
TYP
MAX
UNIT
kΩ
V
R(ONL)
V(PKH)
ON resistance of XFULL
1.5
3
(1)
(1)
Upper threshold voltage of I_PEAK VCC = 3 V
Lower threshold voltage of I_PEAK VCC = 3 V
2.4
V(PKL)
0.6
50
V
CHG = H, V(SW) = 0 V
(free run by tMAX
ICC1
Supply current from VBAT
Supply current from VCC
17
µA
)
CHG = H, V(SW) = 0 V
ICC2
1.3
3
mA
(free run by tMAX
)
Supply current from VCC and
VBAT
ICC3
Ilkg1
Ilkg2
CHG = L
1
2
1
µA
µA
µA
Leakage current of SW terminal
Leakage current of XFULL
terminal
V(XFULL) = 5 V
V(I_PEAK) = 3 V, CHG: High
V(I_PEAK) = 3 V, CHG: Low
2
I(sink)
Sink current at I_PEAK
µA
0.1
SW ON resistance between
SW and PGND
R(ONSW)
I(SW) = 1 A, VCC = 3 V
0.4
0.9
Ω
R(IGBT1)
R(IGBT2)
I(PEAK1)
I(PEAK2)
G_IGBT pullup resistance
G_IGBT pulldown resistance
Upper peak of I(SW)
V(G_IGBT) = 0 V, VCC = 3 V
V(G_IGBT) = 3 V, VCC = 3 V
V(I_IPEAK) = 3 V
8
36
12
53
19.4
70
Ω
Ω
A
A
1.58
0.7
28
1.68
0.8
28.7
29
1.78
0.9
Lower peak of I(SW)
V(I_IPEAK) = 0 V
VBAT = 1.6V, VCC = 3 V
VCC = 3 V
29.4
29.4
60
Charge completion detect voltage
at V(SW)
V(FULL)
V(ZERO)
V
28.6
1
Zero current detection at V(SW)
Thermal shutdown temperature
Over VDS detection at V(SW)
MAX OFF time
20
mV
°C
V
(1)
T(SD)
150
0.95
25
160
1.2
50
170
1.45
80
t MIN
tMAX
µs
µs
MAX ON time
50
100
160
Pulldown resistance of CHG,
F_ON
R(INPD)
VCHG = V(F_ON) = 4.2 V
100
kΩ
(1) Specified by design.
SWITCHING CHARACTERISTICS
TA = 25°C, VBAT = 4.2 V, VCC = 3 V, V(SW) = 4.2 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
F_ON↑↓ - G_IGBT↑↓
MIN
TYP
MAX
UNIT
ns
50
45
SW ON after V(SW) dips from V(ZERO)
SW OFF after I(SW) exceeds I(PEAK)
XFULL↓ after V(SW) exceeds V(FULL)
SW ON after CHG↑
ns
270
400
12
ns
(1)
tPD
Propagation delay
ns
µs
SW OFF after CHG↓
20
ns
(1) Specified by design.
3
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TPS65560
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SLVS608–JANUARY 2006
PIN ASSIGNMENT
RGT
(Top View)
16 15 14 13
1
2
3
4
12
11
10
9
PGND
PGND
CHG
SW
SW
PowerPAD
VCC
F_ON
XFULL
5
6
7
8
NC − No internal connection
TERMINAL FUNCTIONS
PIN NUMBER
SIGNAL
I/O
O
I
DESCRIPTION
Primary side switch. Connect SW to the switched side of the transformer
1, 2
SW
Power supply input. Connect VCC to an input supply from 2.7 V to 4 V. Bypass VCC to GND
with a 1-µF ceramic capacitor as close as possible to the IC.
3
VCC
I
G_IGBT control input. Drives F_ON with the flash discharge signal. A logic high on F_ON
drives G_IGBT high when CHG is Low. See the IGBT Driver Conrtol section for details.
4
F_ON
NC
5, 8, 13, 16
No internal connection
I
Primary side peak current control input. The voltage at I_PEAK sets the peak current into
6
7
I_PEAK
G_IGBT
SW. See the Programming Peak Current section for details on selecting V(I_PEAK)
.
O
IGBT gate driver output. G_IGBT swings from PGND to VCC to drive external IGBT devices.
Charge completion indicator output. XFULL is an open-drain output that pulls low once the
output is fully charged. XFULL is high impedance during charging and all fault conditions.
XFULL is reseted when CHG turns Low from High. See the Indicating Charging Status
section for details.
9
XFULL
CHG
O
I
10
Charge control input. Drive CHG high to initiate charging of the output. Drive CHG low to
terminate charging.
11, 12
14
PGND
Power ground. Connect to the ground plane.
TEST_GND
Used by TI, should be connected to PGND and ground plane.
Battery voltage monitor input. Connect VBAT to an input supply from 1.6 V to 12 V. Bypass
VBAT to GND with a 10-µF ceramic capacitor (C1 in Figure 1, as close as possible to the
battery) and a 1-µF ceramic capacitor (C2 in Figure 1, as close as possible to the IC).
15
VBAT
I
4
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TPS65560
www.ti.com
SLVS608–JANUARY 2006
FUNCTIONAL BLOCK DIAGRAM
VCC
VBAT
SW
CHG
D
Q
F1
0 Vds
XFULL
D
Q
F2
U1
ENA
VCC
V_FULL
ENA
U0
Max ON
U2
TSD
I_PEAK
I_PEAK
Ref.
Logic
V
PGND
ref
SW
U3
VCC
G_IGBT
F_ON
ENA
U4
NC
Figure 2. Functional Block Diagram
I/O Equivalent Circuits
CHG, F_ON
SW
VCC
SW
CHG,
F_ON
PGND
PGND
I_PEAK
XFULL
VCC
XFULL
I_PEAK
PGND
PGND
G_IGBT
VBAT
VCC
VBAT
G_IGBT
PGND
PGND
Figure 3. I/O Equivalent Circuits
5
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TPS65560
www.ti.com
SLVS608–JANUARY 2006
PRINCIPLES OF OPERATION
CHG
(VOUT)
XFULL
F_ON
G_IGBT
(ENA)
TimeA
TimeB
TimeC
TimeD
TimeH
TimeJ
TimeE
TimeI
TimeF
TimeG
Figure 4. Whole Operation Sequence Chart
Start/Stop Charging
TPS65560 has one internal enable latch, F1, that holds the charge enable (ON/OFF status) of the device. See
Figure 2.
The only way to start charging is to input CHG↑ (see time A/C/H in Figure 4). Each time CHG↑ is applied, the
TPS65560 starts charging.
There are three trigger events to stop charging:
1. Forced stop by inputting CHG = L from the controller (see timeB in Figure 4).
2. Automatic stop by detecting a full charge. VOUT reaches the target value (see TimeD in Figure 4).
3. Protected stop by detecting an over current function (OVDS) trigger at SW pin (see TimeI in Figure 4).
Indicating Charging Status
When the charging operation is complete, the TPS65560 drives the charge completion indicator pin, XFULL, to
GND. A controller can detect the status of the device as a logic signal when connected through a pullup resister,
R1 (see Figure 1).
The XFULL output enables the controller to detect the OVDS protection status. If OVDS protection occurs, XFULL
never goes L during CHG = H. Therefore, the controller detects OVDS protection by measuring the time from
CHG high to XFULL low. If the time to XFULL low is longer than the maximum designed charge time, then an
OVDS protection occurred.
The device starts charging at timeH, and OVDS protection occurs at TimeI (see Figure 4). At TimeI, XFULL stays
H. At TimeJ, the controller detects OVDS protection through the expiration of a timer ends and then sets CHG to
low to terminate the operation.
6
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TPS65560
www.ti.com
SLVS608–JANUARY 2006
CHG
XFULL
SW
SW
OFF
ON
OFF
LOGIC
OFF
ON
OFF
OFF ON
OFF
V
SW
V
ZERO
V
V
SW
V
BAT
V
FULL
V
0 V
V
V
BAT
SW
BAT
V
A
V
OUT
V
0 V
V
OUT
V
0 V
V
A
V
0 V
V
OUT
V
A
I
I
SW
PEAK
I
0 A
I
I
SW
SW
I
PEAK
I
0 A
I
OUT
I /N
PEAK TURN
I
0 A
I
I
OUT
OUT
I
/N
PEAK TURN
T
I
Time 1
Time 3
Time 5
0 A
Time 2
Time 4
T
Figure 5. Timing Diagram at One Switching Cycle
Control Charging
Figure 6. Timing Diagram at Beginning/Ending
The TPS65560 provides three comparators to control charging. Figure 2 shows the block diagram of TPS65560
and Figure 5 shows a timing diagram of one switch cycle. Note that emphasis is placed on Time1 and Time3 of
the waveform in Figure 5.
While SW is ON (Time1 to Time2 in Figure 5), U3 monitors current flow through the integrated power switch from
SW pin to GND. When I(SW) exceeds I(PEAK), SW turns OFF (Time2 in Figure 5).
When SW turns OFF (Time2 in Figure 5), the magnetic energy in the transformer starts discharging. Meanwhile,
U2 monitors the kickback voltage at the SW terminal. As the energy is discharging, the kickback voltage is
increasing according to the increase of VO (Time2 to Time3 in Figure 5). When almost all energy is discharged,
the system cannot continue rectification via the diode, and the charging current of IO goes to zero (Times3 in
Figure 5). After rectification stops, the small amount of energy left in the transformer is released via parasitic
paths, and the kickback voltage reaches zero (Time3 to Time4 in Figure 5). During this period, U2 makes SW
turn ON when (V(SW) - VBAT) dips from V(ZERO) (Time5 in Figure 5). In the actual circuit, the period between Time4
and Time5 in Figure 5 is small or does not appear dependent on the delay time of the U2 detection to SW ON.
U1 also monitors the kickback voltage. When (V(SW) - VBAT) exceeds V(FULL), the TPS65560 stops charging (see
Figure 6).
In Figure 5 and Figure 6, ON time is always the same period in every switch cycle. The ON time is calculated by
Equation 1. L and I(PEAK) are selected to ensure that tON does not exceed the MAX ON time (tMAX).
I
PEAK
t
= L
ON
V
BAT
(1)
7
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TPS65560
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SLVS608–JANUARY 2006
The OFF time is dependant on output voltage. As the output voltage gets higher, the OFF time gets shorter (see
Equation 2).
I
PEAK
t
= N
x L
OFF
TURN
V
OUT
(2)
Programming Peak Current
The TPS65560 provides a method to program the peak primary current with a voltage applied to the I_PEAK pin.
Figure 7 shows how to program I(PEAK)
.
The I_PEAK input is treated as a logic input below V(PKL) (0.6 V) and above V(PKH) (2.4 V). Between V(PKL) and
V(PKH), I_PEAK input is treated as an analog input. Using this characteristic, I(PEAK) can be set by a logic signal or
by an analog input.
Typical usages of this function are:
1. Setting the peak charging currents based on the battery voltage. Larger I(PEAK) for a fully charged battery and
lower I(PEAK) for a discharged battery.
2. Reducing I(PEAK) when powering a zooming lens motor. This avoids inadvertent shutdowns due to large
current from the battery.
In Figure 1, three optional connections to I_PEAK are shown.
1. Use the controller to treat I_PEAK as the logic input pin. This option is the easiest.
2. Use a D/A converter to force I(PEAK) to follow analog information, such as battery voltage.
3. Use an analog circuit to achieve the same results as the D/A converter.
I
PEAK1
I
PEAK2
Voltage of I_PEAK - V
Figure 7. I_PEAK vs I(SW)
8
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TPS65560
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SLVS608–JANUARY 2006
IGBT Driver Control
The IGBT driver is provided by the TPS65560. The driver voltage depends on VCC. TPS65560 has a mask filter
as shown in Figure 8. The mask does not have hysteresis; therefore, there is no wait time from CHG forcing Low
after FULL CHARGE to F_ON turning High.
CHG
XFULL
F_ON
G_IGBT
SW On
STANDBY
PREACTIVE
SW Off
etc
FULL CHARGE
STANDBY
Figure 8. IGBT Timing Diagram
Protections
TPS65560 provides four protection mechanisms: max on time, max off time, thermal disable, and overcurrent
shutdown.
MAX On Time
To prevent a condition such as pulling current from a poor power source (i.e., an almost empty battery), and
never reaching peak current, the TPS65560 provides a maximum ON time function. If the ON time exceeds tMAX
the TPS5560 is forced OFF regardless of I(PEAK) detection.
,
MAX Off Time
To prevent a condition such as never increasing the voltage at the SW pin when the internal FET is OFF, the
TPS65560 provides a maximum OFF time function. If the OFF time exceeds tMIN, the TPS65560 is forced ON
regardless of V(ZERO) detection.
Thermal Disable
Once the TPS65560 die temperature reaches 160°C, all functions stop. Once the die cools below 160°C, the
TPS65560 restarts charging if CHG remains high during the entire overtemperature condition.
Overcurrent Shutdown to Monitor VDS at the SW Pin (OVDS
)
The TPS65560 provides an overvoltage monitor function of the SW pin. The TPS65560 is latched off if the
voltage on the SW pin is above OVDS during the switch ON time (see Figure 4 and its descriptions).
This function protects against short-circuits on the primary side of the transformer. A short-circuit of the primary
side shorts the battery voltage to GND. SW pin can damage the device if not protected.
9
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PACKAGE OPTION ADDENDUM
www.ti.com
14-Mar-2006
PACKAGING INFORMATION
Orderable Device
TPS65560RGTR
TPS65560RGTRG4
TPS65560RGTT
Status (1)
ACTIVE
ACTIVE
ACTIVE
ACTIVE
Package Package
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)
Qty
Type
Drawing
QFN
RGT
16
16
16
16
3000 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR
no Sb/Br)
QFN
QFN
QFN
RGT
RGT
RGT
3000 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR
no Sb/Br)
250 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR
no Sb/Br)
TPS65560RGTTG4
250 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR
no Sb/Br)
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and
package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS
compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
Addendum-Page 1
IMPORTANT NOTICE
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enhancements, improvements, and other changes to its products and services at any time and to discontinue
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TI warrants performance of its hardware products to the specifications applicable at the time of sale in
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Copyright 2006, Texas Instruments Incorporated
相关型号：
TPS65560RGTRG4
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TPS65560RGTT
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TI
TPS65561
INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVERWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
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TI
TPS65561RGT
INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVERWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
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TI
TPS65561RGTR
INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVERWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
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TI
TPS65561RGTRG4
INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVERWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
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TI
TPS65561RGTT
INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVERWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
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TI
TPS65561RGTTG4
INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVERWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
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TI
TPS65562
INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVERWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
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TI
TPS65562RGT
暂无描述Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
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TI
TPS65562RGTR
INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVERWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
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TI
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