TLD5098EL [INFINEON]
DC/DC Boost, Buck-Boost, SEPIC controller; DC / DC升压，降压 - 升压， SEPIC控制器
| 型号： | TLD5098EL |
| 厂家： | 
Infineon |
| 描述： | DC/DC Boost, Buck-Boost, SEPIC controller |
| 文件： | 总39页 (文件大小：1497K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Infineon® Power LED Driver
TLD5098EL
DC/DC Boost, Buck-Boost, SEPIC
controller
Datasheet
Rev. 1.0, 2010-10-13
Automotive Power
TLD5098EL
Table of Contents
Table of Contents
1
2
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
3.1
3.2
Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin Definitions and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4
General Product Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Functional Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Thermal Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.1
4.2
4.3
5
5.1
5.2
Boost Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6
6.1
6.2
Oscillator and Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7
7.1
7.2
Enable and Dimming Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
8
8.1
8.2
Linear Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
9
9.1
9.2
Protection and Diagnostic Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
10
Analog Dimming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Purpose of Analog Dimming: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
10.1
10.2
10.3
11
Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
11.1
Further Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
12
13
Package Outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Datasheet
2
Rev. 1.0, 2010-10-13
DC/DC Boost, Buck-Boost, SEPIC controller
TLD5098EL
TLD5098EL
1
Overview
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Wide Input Voltage Range from 4.5 V to 45 V
Constant Current or Constant Voltage Regulation
Drives LEDs in Boost (B2G), Buck-Boost (B2B) and SEPIC Topology
Very Low Shutdown Current: Iq_OFF < 10 µA
Flexible Switching Frequency Range, 100 kHz to 500 kHz
Synchronization with external clock source
PWM Dimming
Analog Dimming feature to adjust average LED current
Internal 5 V Low Drop Out Voltage Regulator
Open Circuit Detection
PG-SSOP-14
Short to GND Protection
Output Overvoltage Protection
Internal Soft Start
Over Temperature Shutdown
Wide LED current range via simple adaptation of external components
300mV High Side Current Sense to ensure highest flexibility and LED current accuracy
Available in a small thermally enhanced PG-SSOP-14 package
Automotive AEC Qualified
Green Product (RoHS) Compliant
Description
The TLD5098EL is a LED boost controller with built in protection features. The main function of this device is to
regulate a constant LED current. The constant current regulation is especially beneficial for LED color accuracy
and longer lifetime. The controller concept of the TLD5098EL allows multiple configurations such as Boost,
Buck/Boost and SEPIC by simply adjusting the external components. The TLD5098EL offers the most flexible
dimming options. Dimming can be achieved with analog or PWM input.The switching frequency is adjustable in
the range of 100 kHz to 500 kHz and can be synchronized to an external clock source. The TLD5098EL features
an enable function reducing the shut-down current consumption to Iq_OFF < 10 µA. The current mode regulation
scheme of this device provides a stable regulation loop maintained by small external compensation components.
The integrated soft start feature limits the current peak as well as voltage overshoot at start-up. This IC is suited
for use in the harsh automotive environments and provides output overvoltage protection, device overtemperature
shutdown and short circuit to GND protection.
Applications
•
Automotive Exterior and Interior Lighting
Type
Package
Marking
TLD5098EL
PG-SSOP-14
TLD5098
Datasheet
3
Rev. 1.0, 2010-10-13
TLD5098EL
Block Diagram
2
Block Diagram
14
LDO
1
IVCC
SWO
IN
Power On
Reset
Internal
Supply
EN_INT/
PWM_INT
On/Off
Logic
13
11
EN / PWMI
Power Switch
Gate Driver
Soft
Start
2
Oscillator
FREQ/ SYNC
Slope
Comp.
4
SWCS
SGND
Switch Current
Error Amplifier
PWM
Generator
3
Thermal
Protection
Leading Edge
Blanking
Open Load
+ Short to GND detection
Over Volage
Protection
9
OVFB
Reference
Current
Generation
10
8
SET
6
7
FBH
FBL
Feedback Voltage
Error Amplifier
COMP
Dimming Switch
Gate Driver
5
EN_INT/
PWM_INT
PWMO
12
GND
Figure 1
Block Diagram
Datasheet
4
Rev. 1.0, 2010-10-13
TLD5098EL
Pin Configuration
3
Pin Configuration
3.1
Pin Assignment
1
14
13
12
11
10
9
IVCC
SWO
IN
EN/PWMI
GND
2
3
4
5
6
7
SGND
SWCS
exposed
Pad
FREQ/SYNC
SET
PWMO
FBH
OVFB
FBL
8
COMP
PINCONFIG_SSOP-14_5098.SVG
Figure 2
Pin Configuration
3.2
Pin Definitions and Functions
Pin
Symbol
Function
1
IVCC
Internal LDO Output;
Used for internal biasing and gate drive. Bypass with external capacitor close to
the pin. Pin must not be left open.
2
3
4
5
6
7
8
SWO
SGND
SWCS
PWMO
FBH
Switch Output;
Connect to gate of external switching MOSFET
Current Sense Ground;
Ground return for current sense switch
Current Sense Input;
Detects the peak current through switch
PWM Dimming Output;
Connect to gate of external MOSFET
Voltage Feedback Positive;
Non inverting Input (+)
FBL
Voltage Feedback Negative;
Inverting Input (-)
COMP
Compensation Input;
Connect R and C network to pin for stability
Datasheet
5
Rev. 1.0, 2010-10-13
TLD5098EL
Pin Configuration
Pin
Symbol
Function
9
OVFB
Output Overvoltage Protection Feedback;
Connect to resistive voltage divider to set overvoltage threshold.
10
11
SET
Analog Dimming Input;
Load current adjustment Pin. Pin must not be left open. If analog dimming feature
is not used connect to IVCC pin.
FREQ / SYNC
Frequency Select or Synchronization Input;
Connect external resistor to GND to set frequency.
Or apply external clock signal for synchronization within frequency capture range.
12
13
14
GND
Ground;
Connect to system ground.
EN / PWMI
IN
Enable or PWM Input;
Apply logic HIGH signal to enable device or PWM signal for dimming LED.
Supply Input;
Supply for internal biasing.
EP
Exposed Pad;
Connect to external heatspreading GND Cu area (e.g. inner GND layer of
multilayer PCB with thermal vias).
Datasheet
6
Rev. 1.0, 2010-10-13
TLD5098EL
General Product Characteristics
4
General Product Characteristics
4.1
Absolute Maximum Ratings
Absolute Maximum Ratings1)
Tj = -40 ⋅C to +150 ⋅C; all voltages with respect to ground, positive current flowing into pin
(unless otherwise specified)
Pos.
Parameter
Symbol
Limit Values Unit Conditions
Min.
Max.
Voltages
4.1.1
4.1.2
4.1.3
4.1.4
IN
VIN
-0.3
-40
45
45
61
61
V
V
V
V
–
–
Supply Input
EN / PWMI
Enable or PWM Input
VEN
FBH-FBL
Feedback Error Amplifier Differential
VFBH-VFBL -40
The maximum delta
must not exceed 61V
FBH
VFBH
-40
-40
–
The difference between
V
exceed 61V, refer to
Parameter 4.1.3
FBH and VFBL must not
Feedback Error Amplifier Positive Input
4.1.5
4.1.6
FBL
VFBL
61
1
V
The difference between
V
exceed 61V, refer to
Parameter 4.1.3
FBH and VFBL must not
Feedback Error Amplifier Negative Input
FBH and FBL current
IFBL,FBH
VOVP
VSWCS
VSWO
VSGND
VCOMP
mA t < 100ms,
V
FBH - VFBL = 0.3V
4.1.7
4.1.8
4.1.9
4.1.10
OVFB
-0.3
-0.3
-0.3
-0.3
-0.3
-0.3
-0.3
5.5
6.2
5.5
6.2
5.5
6.2
0.3
V
V
V
V
V
V
V
–
Over Voltage Feedback Input
t < 10s
SWCS
–
Switch Current Sense Input
t < 10s
4.1.11 SWO
–
Switch Gate Drive Output
4.1.12
t < 10s
4.1.13 SGND
–
Current Sense Switch GND
4.1.14 COMP
-0.3
-0.3
5.5
6.2
5.5
6.2
5.5
6.2
45
V
V
V
V
V
V
V
V
V
–
Compensation Input
4.1.15
t < 10s
4.1.16 FREQ / SYNC; Frequency and
Synchronization Input
4.1.17
VFREQ / SYNC -0.3
–
-0.3
t < 10s
4.1.18 PWMO
PWM Dimming Output
4.1.19
VPWMO
-0.3
-0.3
-0.3
-0.3
-0.3
–
t < 10s
–
4.1.20 SET
VSET
4.1.21 IVCC
Internal Linear Voltage Regulator Output
4.1.22
VIVCC
5.5
6.2
–
t < 10s
Temperatures
4.1.23 Junction Temperature
Tj
-40
150
°C
–
Datasheet
7
Rev. 1.0, 2010-10-13
TLD5098EL
General Product Characteristics
Absolute Maximum Ratings1)
Tj = -40 ⋅C to +150 ⋅C; all voltages with respect to ground, positive current flowing into pin
(unless otherwise specified)
Pos.
Parameter
Symbol
Tstg
Limit Values Unit Conditions
Min.
Max.
4.1.24 Storage Temperature
ESD Susceptibility
-55
150
°C
–
4.1.25 ESD Resistivity of all Pins
VESD,HBM
-2
-4
2
4
kV
kV
HBM2)
HBM2)
4.1.26 ESD Resistivity of IN, EN/PWMI, FBH, VESD,HBM
FBL and SET pin to GND
1) Not subject to production test, specified by design.
2) ESD susceptibility, Human Body Model “HBM” according to EIA/JESD 22-A114B
Note:Stresses above the ones listed here may cause permanent damage to the device. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
Note:Integrated protection functions are designed to prevent IC destruction under fault conditions described in the
data sheet. Fault conditions are considered as “outside” normal operating range. Protection functions are
not designed for continuous repetitive operation.
4.2
Functional Range
Pos. Parameter
Symbol
Limit Values
Max.
Unit
Conditions
VIVCC > VIVCC,RTH,d;
Min.
4.2.1 Extended Supply Voltage Range
VIN
4.5
451)
V
Parameter deviations
possible
4.2.2 Nominal Supply Voltage Range
4.2.3 Feedback Voltage Input
VIN
8
3
34
60
V
V
–
–
VFBH;
VFBL
4.2.4 Junction Temperature
Tj
-40
150
°C
–
1) Not subject to production test, specified by design.
Note:Within the functional range the IC operates as described in the circuit description. The electrical
characteristics are specified within the conditions given in the related electrical characteristics table.
Datasheet
8
Rev. 1.0, 2010-10-13
TLD5098EL
General Product Characteristics
4.3
Thermal Resistance
Note:This thermal data was generated in accordance with JEDEC JESD51 standards. For more information, go
to www.jedec.org.
Pos. Parameter
Symbol
Limit Values
Unit
Conditions
Min.
Typ.
10
Max.
4.3.1 Junction to Case1) 2)
4.3.2 Junction to Ambient1) 3)
RthJC
RthJA
RthJA
RthJA
–
–
–
–
–
–
–
–
K/W
K/W
K/W
K/W
–
47
2s2p
4.3.3
4.3.4
54
1s0p + 600 mm2
1s0p + 300 mm2
64
1) Not subject to production test, specified by design.
2) Specified RthJC value is simulated at natural convection on a cold plate setup (all pins and the exposed pad are fixed to
ambient temperature). Ta=25°C; The IC is dissipating 1W.
3) Specified RthJA value is according to JEDEC 2s2p (JESD 51-7) + (JESD 51-5) and JEDEC 1s0p (JESD 51-3) + heatsink
area at natural convection on FR4 board; The device was simulated on a 76.2 x 114.3 x 1.5 mm board. The 2s2p board
has 2 outer copper layers (2 x 70µm Cu) and 2 inner copper layers (2 x 35µm Cu). A thermal via (diameter = 0.3 mm and
25 µm plating) array was applied under the exposed pad and connected the first outer layer (top) to the first inner layer and
second outer layer (bottom) of the JEDEC PCB. Ta=25°C; The IC is dissipating 1W.
Datasheet
9
Rev. 1.0, 2010-10-13
TLD5098EL
Boost Regulator
5
Boost Regulator
5.1
Description
The TLD5098EL regulator is suitable for boost, buck-boost and SEPIC configurations. The constant output current
is especially useful for light emitting diode (LED) applications. The regulator function is implemented by a pulse
width modulated (PWM) current mode controller.
The PWM current mode controller uses the peak current through the external power switch and error in the output
current to determine the appropriate pulse width duty cycle (on time) for constant output current. The current mode
controller provides a PWM signal to an internal gate driver which then outputs to an external n-channel
enhancement mode metal oxide field effect transistor (MOSFET) power switch.
The current mode controller also has built-in slope compensation to prevent sub-harmonic oscillations which is a
characteristic of current mode controllers operating at high duty cycles (>50% duty).
An additional built-in feature is an integrated soft start that limits the current through the inductor and external
power switch during initialization. The soft start function gradually increases the inductor and switch current over
tSS (Parameter 5.2.9) to minimize potential overvoltage at the output.
OV FB
H when
OVFB >1.25V
OVFB 9
VRef
=
1.25V
High when
UV IVCC
IVCC < 4.0V
COMP 8
FBH 6
VRef
4.0V
=
NOR
Current
Comp
Gate Driver
Supply
x1
EA
1 IVCC
2 SWO
Output Stage
OFF when
Low
gmEA
High when
lEA- ISLOPE - ICS > 0
>
1
INV
R
S
IEA
OFF
when H
Q
Q
FBL 7
1
&
&
0 if SET < 1.6V
0
Gate
Driver
10
Low when
R
SET
1
VRef
V
T
j > 175 °C
Q
&
&
Soft start
(SET − 0.1V )
VRef
0.3V
=
5
Current
Sense
PWM-FF
Oscillator
Slope Comp
I
4
3
SWCS
SGND
NAND 2
S
t
Q
FREQ/
11
ICS
&
Error-FF
Clock
SYNC
Figure 3
Boost Regulator Block Diagram
Datasheet
10
Rev. 1.0, 2010-10-13
TLD5098EL
Boost Regulator
5.2
Electrical Characteristics
1)
Table 1
EC Boost Regulator
VIN = 8V to 34V; Tj = -40 ⋅C to +150 ⋅C, all voltages with respect to ground, positive current flowing into pin; (unless
otherwise specified)
Pos.
Parameter
Symbol
Limit Values
Unit Conditions
Min.
Typ.
Max.
Regulator:
5.2.1
Feedback Reference Voltage
VREF
0.29
0.30
0.31
V
refer to Figure 25
VREF= VFBH -VFBL
VSET= 5V
ILED= 350 mA
5.2.2
5.2.3
Feedback Reference Voltage
VREF
0.057 0.06
0.063
V
refer to Figure 25
VREF= VFBH -VFBL
VSET= 0.4V
ILED= 70mA
Feedback Reference Voltage
Offset
VREF_offset
–
–
–
–
5
mV
refer to Figure 17
and Figure 25
V
REF= VFBH -VFBL
VSET= 0.1V
VOUT>VIN
5.2.4
Voltage Line Regulation
Voltage Load Regulation
(ΔVREF
VREF) /
ΔVIN
/
/
0.15
%/V
refer to Figure 25
VIN = 8V to 19V;
V
SET = 5V;
LED = 350mA
refer to Figure 25
SET = 5V;
LED = 100 to 500mA
I
5.2.5
5.2.6
(ΔVREF
VREF) /
ΔIBO
–
–
5
%/V
mV
V
I
Switch Peak Over Current
Threshold
VSWCS
130
150
170
V
V
FBH = VFBL = 5V
COMP = 3.5V
5.2.7
5.2.8
5.2.9
Maximum Duty Cycle
Maximum Duty Cycle
Soft Start Ramp
DMAX,fixed 91
DMAX,sync 88
93
95
%
%
µs
Fixed frequency mode
Synchronization mode
–
–
tSS
350
1000
1500
V
FB rising from 5% to
95% of VFB, typ.
5.2.10 IFBH
Feedback High Input Current
5.2.11 IFBL
Feedback Low Input Current
IFBH
IFBL
ISWCS
38
15
10
46
21
50
54
µA
µA
µA
V
V
V
FBH - VFBL = 0.3V
FBH - VFBL = 0.3V
SWCS = 150mV
27
5.2.12 Switch Current Sense Input
Current
100
5.2.13 Input Undervoltage Shutdown
5.2.14 Input Voltage Startup
VIN,off
VIN,on
3.5
–
–
–
4.5
V
V
VIN decreasing
VIN increasing
4.85
1) Not subject to production test, specified by design
Datasheet
11
Rev. 1.0, 2010-10-13
TLD5098EL
Boost Regulator
Table 1
EC Boost Regulator
VIN = 8V to 34V; Tj = -40 ⋅C to +150 ⋅C, all voltages with respect to ground, positive current flowing into pin; (unless
otherwise specified)
Pos.
Parameter
Symbol
Limit Values
Unit Conditions
Min.
Typ.
Max.
Gate Driver for external Switch
5.2.15 Gate Driver Peak Sourcing
Current
ISWO,SRC
ISWO,SNK
tR,SWO
–
380
550
30
20
–
–
mA
mA
ns
ns
V
1)VSWO = 1V to 4V
5.2.16 Gate Driver Peak Sinking
Current
–
–
1)VSWO = 4V to 1V
5.2.17 Gate Driver Output Rise Time
5.2.18 Gate Driver Output Fall Time
5.2.19 Gate Driver Output Voltage
–
60
40
5.5
1)CL,SWO = 3.3nF;
V
SWO = 1V to 4V
1)CL,SWO = 3.3nF;
SWO = 4V to 1V
tF,SWO
–
V
VSWO
4.5
1)CL,SWO = 3.3nF;
1) Not subject to production test, specified by design
Datasheet
12
Rev. 1.0, 2010-10-13
TLD5098EL
Oscillator and Synchronization
6
Oscillator and Synchronization
6.1
Description
The internal oscillator is used to determine the switching frequency of the boost regulator. The switching frequency
can be selected from 100 kHz to 500 kHz with an external resistor to GND. To set the switching frequency with an
external resistor the following formula can be applied.
1
s
R FREQ
=
−
3.5 × 10 3
[
Ω
])
Ω
[ ]
141 × 10 −12 [Ω ]
)
× f FREQ [ ]
1
s
(
)
(
In addition, the oscillator is capable of changing from the frequency set by the external resistor to a synchronized
frequency from an external clock source. If an external clock source is provided on the pin FREQ/SYNC, then the
internal oscillator synchronizes to this external clock frequency and the boost regulator switches at the
synchronized frequency. The synchronization frequency capture range is 250 kHz to 500 kHz.
Oscillator
FREQ / SYNC
PWM
Logic
Gate
Driver
11
Multiplexer
2
SWO
Clock Frequency
Detector
RFREQ
VCLK
Figure 4
Oscillator and Synchronization Block Diagram and Simplified Application Circuit
TSYNC = 1 / fSYNC
tSYNC,TR
tSYNC,TR
VSYNC
tSYNC,PWH
4.5 V
0.5 V
VSYNC,H
VSYNC,L
t
Figure 5
Synchronization Timing Diagram
Datasheet
13
Rev. 1.0, 2010-10-13
TLD5098EL
Oscillator and Synchronization
6.2
Electrical Characteristics
Table 2
EC Oscillator and Synchronization
VIN = 8V to 34V; Tj = -40 ⋅C to +150 ⋅C, all voltages with respect to ground, positive current flowing into pin; (unless
otherwise specified)
Pos.
Parameter
Symbol
Limit Values
Unit
Conditions
Min.
Typ.
Max.
Oscillator:
6.2.1
6.2.2
Oscillator Frequency
fFREQ
fFREQ
250
100
300
–
350
500
kHz
kHz
R
V
FREQ = 20kΩ
Oscillator Frequency
Adjustment Range
6.2.3
FREQ / SYNC Supply
Current
IFREQ
–
–
-700
1.32
µA
V
FREQ = 0V
6.2.4
Frequency Voltage
VFREQ
1.16
1.24
fFREQ = 100kHz
Synchronization
6.2.5
6.2.6
6.2.7
6.2.8
Synchronization Frequency fSYNC
Capture Range
250
3.0
–
–
–
–
–
500
–
kHz
V
–
1) 2)
Synchronization Signal
High Logic Level Valid
VSYNC,H
VSYNC,L
1) 2)
1) 2)
Synchronization Signal
Low Logic Level Valid
0.8
–
V
Synchronization Signal
Logic High Pulse Width
tSYNC,PWH 200
ns
1) Synchronization of external PWM ON signal to falling edge
2) Not subject to production test, specified by design
Datasheet
14
Rev. 1.0, 2010-10-13
TLD5098EL
Oscillator and Synchronization
Typical Performance Characteristics of Oscillator
Switching Frequency fSW versus
Frequency Select Resistor to GND RFREQ/SYNC
600
500
400
Tj = 25 °C
300
200
100
0
0
10 20 30 40 50 60 70 80
FREQ/SYNC [kohm]
R
Datasheet
15
Rev. 1.0, 2010-10-13
TLD5098EL
Enable and Dimming Function
7
Enable and Dimming Function
7.1
Description
The enable function powers ON or OFF the device. A valid logic LOW signal on enable pin EN/PWMI powers OFF
the device and current consumption is less than Iq_OFF (Parameter 7.2.14). A valid logic HIGH enable signal on
enable pin EN/PWMI powers on the device. The enable function features an integrated pull down resistor which
ensures that the IC is shut down and the power switch is OFF in case the enable pin EN is left open.
In addition to the enable function described above, the EN/PWMI pin detects a pulse width modulated (PWM) input
signal that is fed through to an internal gate driver. The internal gate driver outputs the same PWM signal on the
PWMO pin to an external N-channel enhancement mode MOSFET for PWM dimming an LED load. PWM dimming
an LED is a commonly practiced dimming method and can prevent color shift in an LED light source. Moreover
the PWM output function may also be used to drive other types of loads besides LED.
The enable and PWM input function share the same pin. Therefore a valid logic LOW signal at the EN/PWMI pin
needs to differentiate between an enable power OFF or an PWM dimming LOW signal. The device differentiates
between enable OFF and PWM dimming signal by requiring the enable OFF at the EN/PWMI pin to stay LOW for
the Enable Turn OFF Delay Time (tEN,OFF,DEL Parameter 7.2.6).
IN
14
Enable
Enable
PWMI
IVCC
1
2
5
LDO
EN / PWMI
SWO
Enable / PWMI
Logic
Gate
Driver
13
Microcontroller
PWMO
Gate
Driver
Figure 6
Block Diagram and Simplified Application Circuit Enable and LED Dimming
Datasheet
16
Rev. 1.0, 2010-10-13
TLD5098EL
Enable and Dimming Function
tEN,START
TPWMI
tPWMI,H
tEN,OFF,DEL
VEN/PWMI
VEN/PWMI,ON
VEN/PWMI,OFF
t
VIVCC
VIVCC,ON
VIVCC,RTH
t
t
t
VPWMO
1
TFREQ
=
fFREQ
VSWO
Power OFF Delay Time
Power ON
Power OFF
Iq_OFF
Normal
SWO ON
PWMO ON
Normal
SWO ON
PWMO ON
Normal
SWO ON
PWMO ON
Dim
Dim
PWMO OFF
SWO OFF
PWMO OFF
SWO OFF
Figure 7
Timing Diagram Enable and LED Dimming
7.2
Electrical Characteristics
Table 3
EC Enable and Dimming
VIN = 8V to 34V; Tj = -40 ⋅C to +150 ⋅C, all voltages with respect to ground, positive current flowing into pin; (unless
otherwise specified)
Pos.
Parameter
Symbol
Limit Values
Unit
Conditions
Min.
VEN/PWMI,ON 3.0
VEN/PWMI,OFF
Typ.
Max.
Enable/PWM Input:
7.2.1
7.2.2
7.2.3
Enable/PWMI
Turn On Threshold
–
V
–
Enable/PWMI
Turn Off Threshold
–
–
0.8
V
–
1)
Enable/PWMI Hysteresis VEN/PWMI,HYS 50
200
400
mV
Datasheet
17
Rev. 1.0, 2010-10-13
TLD5098EL
Enable and Dimming Function
Table 3
EC Enable and Dimming
VIN = 8V to 34V; Tj = -40 ⋅C to +150 ⋅C, all voltages with respect to ground, positive current flowing into pin; (unless
otherwise specified)
Pos.
Parameter
Symbol
Limit Values
Unit
Conditions
Min.
Typ.
Max.
7.2.4
7.2.5
7.2.6
Enable/PWMI
High Input Current
IEN/PWMI,H
IEN/PWMI,L
tEN,OFF,DEL
–
–
30
µA
µA
ms
V
V
–
EN/PWMI = 16.0V
EN/PWMI = 0.5V
Enable/PWMI
Low Input Current
–
8
0.1
10
1
Enable Turn Off
Delay Time
12
7.2.7
7.2.8
PWMI Min Duty Time
Enable Startup Time
tPWMI,H
4
–
–
–
–
µs
µs
–
1)
tEN,START
100
Gate Driver for Dimming Switch:
7.2.9
PWMO Gate Driver Peak IPWMO,SRC
Sourcing Current
–
230
370
50
–
mA
mA
ns
ns
V
1) VPWMO = 1V to 4V
1) VPWMO = 4V to 1V
1) CL,PWMO = 3.3nF;
7.2.10 PWMO Gate Driver Peak IPWMO,SNK
–
–
Sinking Current
7.2.11 PWMO Gate Driver
Output Rise Time
tR,PWMO
tF,PWMO
VPWMO
–
100
60
5.5
V
PWMO = 1V to 4V
1) CL,PWMO = 3.3nF;
PWMO = 4V to 1V
1) CL,PWMO = 3.3nF;
7.2.12 PWMO Gate Driver
Output Fall Time
–
30
–
V
7.2.13 PWMO Gate Driver
Output Voltage
4.5
Current Consumption
7.2.14 Current Consumption,
Shutdown Mode
Iq_OFF
Iq_ON
–
–
–
–
10
7
µA
VEN/PWMI = 0.8 V;
Tj ≤ 105C; VIN = 16V
7.2.15 Current Consumption,
Active Mode2)
mA
VEN/PWMI ≥ 4.75V;
I
V
BO = 0mA;
SWO = 0% Duty Cycle
1) Not subject to production test, specified by design
2) Dependency on switching frequency and gate charge of boost and dimming switch.
Datasheet
18
Rev. 1.0, 2010-10-13
TLD5098EL
Linear Regulator
8
Linear Regulator
8.1
Description
The internal linear voltage regulator supplies the internal gate drivers with a typical voltage of 5V and current up
to ILIM,min (Parameter 8.2.2). An external output capacitor with ESR lower than RIVCC,ESR (Parameter 8.2.5) is
required on pin IVCC for stability and buffering transient load currents. During normal operation the external boost
and dimming MOSFET switches will draw transient currents from the linear regulator and its output capacitor.
Proper sizing of the output capacitor must be considered to supply sufficient peak current to the gate of the
external MOSFET switches.
Integrated undervoltage protection for the external switching MOSFET:
An integrated undervoltage reset threshold circuit monitors the linear regulator output voltage (VIVCC) and resets
the device in case the output voltage falls below the IVCC Undervoltage Reset switch OFF Threshold (VIVCC,RTH,d
Parameter 8.2.7). The Undervoltage Reset threshold for the IVCC pin helps to protect the external switches from
excessive power dissipation by ensuring the gate drive voltage is sufficient to enhance the gate of an external logic
level N-channel MOSFET.
IN
IVCC
14
1
Linear Regulator
13
EN / PWMI
Gate
Drivers
Figure 8
Voltage Regulator Block Diagram and Simplified Application Circuit
Datasheet
19
Rev. 1.0, 2010-10-13
TLD5098EL
Linear Regulator
8.2
Electrical Characteristics
Table 4
EC Line Regulator
VIN = 8V to 34V; Tj = -40 ⋅C to +150 ⋅C, all voltages with respect to ground, positive current flowing into pin; (unless
otherwise specified)
Pos.
Parameter
Symbol
Limit Values
Unit Conditions
Min.
Typ.
Max.
8.2.1
8.2.2
8.2.3
Output Voltage
VIVCC
ILIM
4.85
5
5.15
V
6V ≤ VIN ≤ 45V
0.1mA ≤ IIVCC ≤ 50mA
Output Current Limitation
Drop out Voltage
51
–
–
–
90
mA
V
VIN = 13.5V
V
IVCC = 4.5V
VIN = 4.5V
IVCC = 25mA
VDR
0.5
I
1) 2)
8.2.4
8.2.5
8.2.6
IVCC Buffer Capacitor
CIVCC
0.47
–
1
–
–
100
0.5
–
µF
Ω
1)
IVCC Buffer Capacitor ESR
RIVCC,ESR
Undervoltage Reset Headroom VIVCC,HDRM 100
mV
V
V
IVCC decreasing
IVCC - VIVCC,RTH,d
3) VIVCC decreasing.
8.2.7
8.2.8
IVCC Undervoltage Reset
switch OFF Threshold
VIVCC,RTH,d 3.6
VIVCC,RTH,i
–
–
4.0
4.5
V
V
IVCC Undervoltage Reset
switch ON Threshold
–
VIVCC increasing
1) Not subject to production test, specified by design
2) Minimum value given is needed for regulator stability; application might need higher capacitance than the minimum.
3) Selection of external switching MOSFET is crucial and the VIVCC,RTH,d min. as worst case VGS must be considered.
Datasheet
20
Rev. 1.0, 2010-10-13
TLD5098EL
Protection and Diagnostic Functions
9
Protection and Diagnostic Functions
9.1
Description
The TLD5098EL has integrated circuits to diagnose and protect against output overvoltage, open load, open
feedback and overtemperature faults. Additionally the FBH and FBL potential is monitored and in case the LED
load short circuits to GND (see description Figure 15) the regulator stops the operation and protects the system.
In case any of the six fault conditions occur the PWMO and IVCC signal will change to an active logic LOW signal
to communicate that a fault has occurred (detailed overview in Figure 9 and Figure 10 below). Figure 11
illustrates the various open load and open feedback conditions. In case of an overtemperature condition the
integrated thermal shutdown function turns off the gate drivers and internal linear voltage regulator. The typical
junction shutdown temperature is 175°C (Tj,SD Parameter 9.2.2). After cooling down the IC will automatically
restart. Thermal shutdown is an integrated protection function designed to prevent IC destruction and is not
intended for continuous use in normal operation (Figure 13). To calculate the proper overvoltage protection
resistor values an example is given in Figure 14.
Input
Output
Protection and
Diagnostic Circuit
Output
Overvoltage
Open Load
Short to GND
Open Feedback
Overtemperature
SWO and PWMO
Gate Driver Off
OR
Linear Regualtor
Off
OR
Input
Undervoltage
Figure 9
Protection and Diagnostic Function Block Diagram
Datasheet
21
Rev. 1.0, 2010-10-13
TLD5098EL
Protection and Diagnostic Functions
Input
Condition
Overvoltage @
Output
Output
PWMO
H or Sw*
Level*
False
True
SWO
Sw*
L
IVCC
Active
Active
L
False
True
Sw*
L
H or Sw*
Active
Active
Open Load
L
False
True
Sw*
L
H or Sw*
Active
Active
Short to GND @ LED
chain
L
False
True
False
True
False
True
Sw*
L
Sw*
L
Sw*
L
H or Sw*
Active
Active
Active
Shutdown
Active
Open Feedback
Overtemperature
L
H or Sw*
L
H or Sw*
L
Undervoltage @
Input
Shutdown
*Note:
Sw = Switching
False = Condition does not exist
True = Condition does exist
Figure 10 Diagnosis Truth Table
VBO
Output Open Circuit Conditions
Open Circuit 3
Open Circuit 1
Open Circuit
Fault Condition
Condition
Fault Threshold Voltage
VREF
1
2
3
4
Open FBH
Open FBL
-20 to -100 mV
0.5 to 1.0 V
ROVH
RFB
Overvoltage
Compartor
OVFB
Open Circuit 2
D1
9
Open VBO
Open PWMO
-20 to -100 mV
ROVL
Detected by overvoltage
VOVFB,TH
D2
D3
D4
D5
D6
D7
D8
D9
D10
VREF
Feedback Voltage
Error Amplifier
FBH
6
+
VREF
-
FBL
Max Threshold = 1.0 V
7
Min Threshold = 0.5 V
Typical VREF = 0.3 V
Open Circuit 4
TDIM
Max Threshold = -20 mV
Min Threshold = -100 mV
PWMO
5
Figure 11 Open Load and Open Feedback Conditions
Datasheet
22
Rev. 1.0, 2010-10-13
TLD5098EL
Protection and Diagnostic Functions
Startup
Normal
Thermal
Overvoltage
2
Open Load /
Feedback
Shutdown
Shutdown
1
3
VIVCC
VIVCC,RTH,i
VIVCC,RTH,d
t
t
t
t
Tj,SD,HYST
Tj
Tj,SD
1
VOVFB,HYS
2
VBO
V
OVFB ≥ VOVFB,TH
VIN
3
VFBH-VFBL
VREF,2
tSS
tSS
0.3 V Typ
VREF,1
VPWMO
t
Figure 12 Open load, Overvoltage and Overtemperature Timing Diagram
Datasheet
23
Rev. 1.0, 2010-10-13
TLD5098EL
Protection and Diagnostic Functions
VEN/PWMI
H
L
t
Tj
T
jSD
ΔΤ
TjSO
t
Ta
VSWO
t
ILED
Ipeak
t
VPWMO
t
VIVCC
5V
t
Device
OFF
Overtemp
Fault
Overtemp
Fault
Overtemp Overtemp
ON
Fault Fault
Normal Operation
ON
ON
Figure 13 Device overtemperature protection behavior
Datasheet
24
Rev. 1.0, 2010-10-13
TLD5098EL
Protection and Diagnostic Functions
VOVFB
example: VOUT,max=40V
VOVP,max
1.25mA
Overvoltage Protection
ACTIVE
40V
ROVH
≅ 33.2kΩ
TLD5098
1.25mA
9
VOVFB,TH
1.25V
OVFB
ROVL
1kΩ
1.25V
Overvoltage Protection is
disabled
GND
12
t
Figure 14 Overvoltage Protection description
Short to GND protection for Highside Return Applications (B2B) from Figure 23
The FBH and FBL pins features a Short to GND detection threshold (VFBL,FBH_S2G). If the potential on those pins is
below this threshold the Device stops his operation. This means that the PWMO signal changes to inactive state
(LOW potential) and the corresponding p-channel (TDIM2) is switched OFF accordingly and protects the LED chain.
For the B2B application some external components are needed to ensure a LOW potential during a short circuit
event. D1 and D2 are low power diodes (BAS16-03W) and the resistor Rlim (10kOhm) is needed to limit the current
through this path. The diode D3 should be a high power diode and is needed to protect the RFB and the FBH and
FBL pins in case of an short circuit to GND event. This short circuit detection and protection concept considers
potential faults for LED chains (LED Modules) which are separated from the ECU via two wires (at the beginning
and at the end of the LED chain). If the short circuit condition disappears, the device will re-start with an soft start.
CBO
VFBL,FBH
D2
D1 Rlim
60V
wire
harness
wire
harness
LED Module
RFB
Vbb
TDIM2
CIN
Dn
D1
D3
Normal Operation
Short to GND
TDIM1
Short to GND
LBO
DBO ILED
ISW
VOUT
TSW
PWMO
4.5V
SWO
Device working with parameter
deviations
SWCS
VFBL,FBH_S2G
FBH
FBL
Short Circuit detected on
FBH/FBL
SGND
IN
t
Figure 15 Short Circuit to GND Protection
Datasheet
25
Rev. 1.0, 2010-10-13
TLD5098EL
Protection and Diagnostic Functions
9.2
Electrical Characteristics
Table 5
EC Protection and Diagnosis
VIN = 8V to 34V; Tj = -40 ⋅C to +150 ⋅C, all voltages with respect to ground, positive current flowing into pin; (unless
otherwise specified)
Pos.
Parameter
Symbol
Limit Values
Unit Conditions
Min.
Typ.
Max.
Short Circuit Protection
9.2.1
FBH and FBL Short-Circuit fault VFBL,FBH_S2G 1.5
sensing common mode range
–
2
V
refer to Figure 15
FBH=VFBL
V
decreasing
Temperature Protection:
9.2.2
9.2.3
Over Temperature Shutdown
Tj,SD
160
–
175
15
190
–
°C
°C
1) refer to Figure 13
1)
Over Temperature Shutdown
Hystereses
Tj,SD,HYST
Overvoltage Protection:
9.2.4
9.2.5
9.2.6
9.2.7
Output Over Voltage Feedback VOVFB,TH
Threshold Increasing
1.21
50
2
1.25
–
1.29
150
10
V
refer to Figure 14
Output Over Voltage Feedback VOVFB,HYS
Hysteresis
mV
µs
µA
1) Output Voltage
decreasing
Over Voltage Reaction Time
tOVPRR
IOVFB
–
Output Voltage
decreasing
Over Voltage Feedback Input
Current
-1
0.1
1
VOVFB = 1.25V
Open Load and Open Feedback Diagnostics
9.2.8
Open Load/Feedback
Threshold
VREF,1,3
-100
0.5
–
–
-20
1
mV
V
refer to Figure 11
REF = VFBH - VFBL
Open Circuit 1 or 3
REF = VFBH - VFBL
Open Circuit 2
V
9.2.9
Open Feedback Threshold
VREF,2
V
1) Specified by design; not subject to production test.
Note:Integrated protection functions are designed to prevent IC destruction under fault conditions described in the
data sheet. Fault conditions are considered as “outside” normal operating range. Protection functions are
not designed for continuous repetitive operation.
Datasheet
26
Rev. 1.0, 2010-10-13
TLD5098EL
Analog Dimming
10
Analog Dimming
This pin is influencing the Feedback Voltage Error Amplifier by generating an internal current accordingly to an
external reference voltage (VSET). If the analog dimming feature is not needed this pin must be connected to IVCC
or external > 1.6V supply. Different application scenarios are described in Figure 18. This pin can also go outside
of the ECU for instance if a thermistor is connected on a separated LED Module and the Analog Dimming Input is
used to thermally protect the LEDs. For reverse battery protection of this pin an external series resistor should be
placed to limit the current.
10.1
Purpose of Analog Dimming:
1) It is difficult for LED manufacturers to deliver LEDs which have the same Brightness, Colorpoint and Forward
Voltage Class. Due to this relatively wide spread of the crucial LED parameters automotive customers order LEDs
from one or maximum two different colorpoint classes. The LED manufacturer must preselect the LEDs to deliver
the requested colorpoint class. Those preselected LEDs are matched in terms of the colorpoint but a variation of
the brightness remains. To correct the brightness deviation an analog dimming feature is needed. The mean LED
current can be adjusted by applying an external voltage VSET at the SET pin.
2) If the DC/DC application is separated from the LED loads the ECU manufacturers aim is to develop one
hardware which should be able to handle different load current conditions (e.g. 80mA to 400mA) to cover different
applications. To achieve this average LED current adjustment the analog dimming is a crucial feature.
10.2
Description
Application Example:
Desired LED current = 400mA. For the calculation of the correct Feedback Resistor RFB the following equation can
be used: This formula is valid if the analog dimming feature is disabled and VSET > 1.6V.
VREF
ILED
VREF
RFB
0.3V
-->
-->
RFB
=
ILED
=
RFB =
= 750mΩ
400mA
A decrease of the average LED current can be achieved by controlling the voltage at the SET pin (VSET) between
0V and 1.6V. The mathematical relation is given in the formula below:
V
− 0 ,1 V
5 * R
SET
I
=
LED
FB
If VSET is 100mV the LED current is only determined by the internal offset voltages of the comparators. For this
example ILED = 0A if VSET < 100mV. Refer to the concept drawing in Figure 17.
Datasheet
27
Rev. 1.0, 2010-10-13
TLD5098EL
Analog Dimming
VREF
[V]
typ. 300mV
1.6V
100mV
VSET
[V]
Analog Dimming
Disabled
Analog Dimming Feature Enabled
VSET − 0.1V
5* RFB
VREF
ILED
=
ILED
=
RFB
Figure 16 Voltage VSET versus LED current
VREF
VOUT
RFB
FBL
IFBL
R2
FBH
ILED
6
7
V
int
IFBH
R1
VBandgap = 1.6V
VREF_offset
SET
10
+
+
-
VSET
-
+
Feedback Voltage
Error Amplifier
ISET
ISET
n*ISET
R3
100mV
COMP
GND
8
12
CCOMP
RCOMP
Figure 17 Concept Drawing Analog Dimming
Datasheet
28
Rev. 1.0, 2010-10-13
TLD5098EL
Analog Dimming
Multi-purpose usage of the Analog dimming feature
1) A µC integrated digital analog converter (DAC) output or a stand alone DAC can be used to supply the SET pin
of the TLD5098EL. The integrated voltage Regulator (VIVCC) can be used to supply the µC or external components
if the current consumption does not exceed 25mA.
2) The analog dimming feature is directly connected to the input voltage of the system. In this configuration the
LED current is reduced if the input voltage VIN is decreasing. The DC/DC boost converter is changing (increasing)
the switching duty cycle if VIN drops to a lower potential. This is causing an increase of the input current
consumption. If applications require a decrease of the LED current in respect to VIN variations this setup can be
choosen.
3) The usage of an external resistor divider connected between IVCC (integrated 5V regulator output and gate
buffer pin) SET and GND can be choosen for systems without µC on board. The concept allows to control the LED
current via placing cheap low power resistors. Furthermore a temperature sensitive resistor (Thermistor) to protect
the LED loads from thermal destruction can be connected additionally.
4) If the analog dimming feature is not needed the SET pin must be connected directly to >1.6V potential (e.g.
IVCC potential)
5) Instead of an DAC the µC can provide a PWM signal and an external R-C filter is producing a constant voltage
for the analog dimming. The voltage level is depending on the PWM frequency (fPWM) and duty cycle (DC) which
can be controlled by the µc software after reading the coding resistor placed at the LED module.
Datasheet
29
Rev. 1.0, 2010-10-13
TLD5098EL
Analog Dimming
.
+5V
Vbb
1
2
CIVCC
1
14
IVCC
IN
RSET2
10
D/A-Output
µC
SET
10
SET
VSET
VSET RSET1
Cfilter
GND
12
GND
12
3
4
VIVCC = +5V
Rfilter
VIVCC = +5V
1
1
IVCC
SET
IVCC
SET
RSET2
CIVCC
C
IVCC
10
10
RSET1
GND
12
GND
12
VSET
VSET ~ VIVCC
Cfilter
Cfilter
5
+5V
CIVCC
1
IVCC
SET
PWM
10
PWM output
Rfilter
µC
(e.g. XC866)
Cfilter
VSET
GND
12
Figure 18 Analog Dimming in various applications
Datasheet
30
Rev. 1.0, 2010-10-13
TLD5098EL
Analog Dimming
10.3
Electrical Characteristics
Table 6
EC Analog Dimming
VIN = 8V to 34V; Tj = -40 ⋅C to +150 ⋅C, all voltages with respect to ground, positive current flowing into pin; (unless
otherwise specified)
Pos.
Parameter
Symbol
Limit Values
Unit Conditions
Min.
Typ.
Max.
Analog Dimming Range
10.3.1 SET programming range
VSET
0
–
1.6
V
1) refer to Figure 16
1) Specified by design; not subject to production test.
Datasheet
31
Rev. 1.0, 2010-10-13
TLD5098EL
Application Information
11
Application Information
Note:The following information is given as a hint for the implementation of the device only and shall not be
regarded as a description or warranty of a certain functionality, condition or quality of the device.
IBO
DRV
L1
V
IN
LBO
DBO
VBO
CBO
VBATT
CIN
ISW
C1
C2
RFB
VREF
TSW
2
4
SWO
14
1
IN
Provisional
Parts
SWCS
D1
IVCC
CIVCC
RCS
D2
D3
D4
D5
D6
D7
D8
D9
D10
V
CC or VIVCC
ROVH
3
9
SGND
OVFB
PWM
10
PWM - Output
IC2
SET
R
filter
ROVL
Cfilter
IC1
TLD5098
Microcontroller
(e.g. XC866)
13
11
8
EN / PWMI
FREQ/ SYNC
COMP
Output
Output
6
7
FBH
FBL
Input
ILED
CCOMP
TDIM
5
PWMO
RFREQ
RCOMP
GND
12
Figure 19 LED Low Side Return Application Circuit (Boost to GND, B2G)
Reference
Designator
Part
Number
Value
Manufacturer
Type
Quantity
D1 - 10
DBO
White
Schottky, 3 A, 100 VR
100 uF, 50V
10 nF
Osram
Vishay
LW W5SM
SS3H10
LED
Diode
10
1
2
1
1
1
1
1
1
1
1
1
1
1
1
2
2
CIN, CBO
Panasonic
EPCOS
EEEFK1H101GP
X7R
Capacitor
Capacitor
Capacitor
IC
CCOMP
CIVCC
IC1
MLCC CCNPZC105KBW X7R
TLD5098
1uF , 6.3V
EPCOS
--
Infineon
IC2
--
Infineon
XC866
IC
LBO
100 uH
Coilcraft
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Infineon
MSS1278T-104ML
ERJ3EKF1002V
ERJ14BQFR82U
ERJ3EKF2002V
ERJ3EKF3322V
ERJ3EKF1001V
ERJB1CFR05U
IPG20N06S4L-26
IPD35N10S3L-26
BSP318S
Inductor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Transistor
Transistor
Transistor
RCOMP
RFB
10 kΩ, 1%
820 mΩ, 1%
20 kΩ, 1%
RFREQ
ROVH
ROVL
RCS
33.2 kΩ, 1%
1 kΩ, 1%
50 mΩ, 1%
Dual N-ch enh. (60V, 20A)
alternativ: 100V N-ch, 35A
alternativ: 60V N-ch, 2.6A
TDIM,TSW
Infineon
Infineon
Figure 20 Bill of Materials for LED Low Side Return Application Circuit
Datasheet 32
Rev. 1.0, 2010-10-13
TLD5098EL
Application Information
Lfilter
L1
DBO
CSEPIC
DRV
V
IN
VBATT
CIN
ISW
C1
C2
RFB
L2
VREF
CBO
TSW
2
4
SWO
14
IN
ILED
Provisional
Parts
SWCS
RCS
D1
VCC or VIVCC
ROVH
3
9
SGND
OVFB
PWM
10
PWM - Output
IC2
Microcontroller
(e.g. XC866)
SET
Rfilter
Number of LEDs could
be variable!
This means the
following configurations
are possible:
1) VOUT < VIN (Buck)
2) VOUT > VIN (Boost)
ROVL
Cfilter
IC1
TLD5098
13
11
8
Output
Output
EN / PWMI
FREQ/ SYNC
COMP
6
7
FBH
FBL
Input
BAS1603W
DPOL
CCOMP
Dn
RPOL
1
IVCC
10kΩ
CIVCC
Startup Circuit
RFREQ
RCOMP
TDIM
5
PWMO
GND
12
Figure 21 SEPIC Application Circuit
Reference
Value
Part
Number
Manufacturer
Type
LED
Quantity
Designator
D1 - n
DBO
White
Schottky, 3 A, 100 VR
3.3 uF, 20V
100 uF, 50V
10 nF
Osram
Vishay
LW W5SM
SS3H10
variable
Diode
Capacitor
Capacitor
Capacitor
Capacitor
IC
1
1
2
1
1
1
1
2
1
2
1
1
1
1
1
1
1
2
2
CSEPIC
CIN, CBO
CCOMP
CIVCC
IC1
EPCOS
X7R, Low ESR
EEEFK1H101GP
X7R
Panasonic
EPCOS
MLCC CCNPZC105KBW X7R
TLD5098
1uF , 6.3V
--
EPCOS
Infineon
IC2
--
Infineon
XC866
IC
L1 , L2
47 uH
Coilcraft
Coilcraft
Panasonic
Infineon
MSS1278T-473ML
MSD1278-223MLD
ERJ3EKF1002V
BAS1603W
Inductor
Inductor
Resistor
Diode
alternativ: 22uH coupled
inductor
RCOMP, RPOL
DPOL
10 kΩ, 1%
80V Diode
RFB
820 mΩ, 1%
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Infineon
ERJ14BQFR82U
ERJ3EKF2002V
ERJ3EKF3322V
ERJ3EKF1001V
ERJB1CFR05U
IPG20N06S4L-26
IPD35N10S3L-26
BSP318S
Resistor
Resistor
Resistor
Resistor
Resistor
Transistor
Transistor
Transistor
RFREQ
ROVH
20 kΩ, 1%
33.2 kΩ, 1%
ROVL
1 kΩ, 1%
RCS
50 mΩ, 1%
Dual N-ch enh. (60V, 20A)
alternativ: 100V N-ch, 35A
alternativ: 60V N-ch, 2.6A
TDIM,TSW
Infineon
Infineon
Figure 22 Bill of Materials for SEPIC Application Circuit
Datasheet 33
Rev. 1.0, 2010-10-13
TLD5098EL
Application Information
CBO
DSC1: Rlim:10kΩ
Low Power Diode range
DSC2:
Low Power Diode
VIN
RFB
TDIM2
DRV
L1
VBATT
CIN
DZ
D3
Dn
D1
RDIM2
C1
C2
Power
Schottky
Diode
VOUT is always higher than VIN
Therefore: Number of LEDs could be variable!
RDIM1
Short to GND
Short to GND
Provisional
Parts
ILED
LBO
DBO
TDIM1
ISW
VOUT
TSW
5
PWMO
2
SWO
4
SWCS
6
FBH
RCS
7
VCC or VIVCC
FBL
IN
3
9
SGND
OVFB
ROVH
14
10
PWM
PWM-Output
IC2
SET
Rfilter
Cfilter
ROVL
IC1
TLD5098
Microcontroller
(e.g. XC866)
Input
13
11
Output
Output
EN / PWMI
FREQ / SYNC
8
1
COMP
IVCC
CCOMP
CIVCC
GND
12
RFREQ
RCOMP
Figure 23 LED High Side Return Application Circuit (Boost to Vbb, B2B)
Reference
Designator
Part
Number
Value
Manufacturer
Type
Quantity
D1 - n
DBO , D3
DSC1 , DSC2
DZ
White
Osram
Vishay
Infineon
--
LW W5AP
SS3H10
Diode
Diode
Diode
Diode
variable
Schottky, 3 A, 100 VR
Low Power Diode
Zener Diode
2
BAS16-03W
--
2
1
CBO
CIN
100 uF, 80V
100 uF, 50V
Panasonic
Panasonic
EEVFK1K101Q
Capacitor
Capacitor
1
1
EEEFK1H101GP
CCOMP
10 nF
1 uF, 6.3V
--
EPCOS
EPCOS
X7R
MLCC CCNPZC105KBW X7R
TLD5098
Capacitor
Capacitor
IC
1
1
1
1
1
4
1
1
1
1
1
1
1
1
CIVCC
IC1
Infineon
IC2
--
Infineon
XC866
IC
LBO
RCOMP, RDIM1, RDIM2,
RFB
100 uH
10 kΩ, 1%
Coilcraft
MSS1278T-104ML_
Inductor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Transistor
Transistor
Transistor
R
lim
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Infineon
ERJ3EKF1002V
ERJ14BQFR82U
ERJ3EKF2002V
ERJP06F5102V
ERJ3EKF1001V
ERJB1CFR05U
BSO615CG
820 mΩ, 1%
20 kΩ, 1%
RFREQ
ROVH
33.2 kΩ, 1%
ROVL
1 kΩ, 1%
RCS
50 mΩ, 1%
TDIM1,TDIM2
60V Dual N-ch (3.1A) and P-ch. enh. (2A)
alternativ: 100V N-ch (0.37A),
alternativ: 60V P-ch (1.9A)
Infineon
BSP123
Infineon
BSP171P
N-ch, OptiMOS-T2 100V, 35A
alternativ: 60V N-ch, 30A
TSW
Infineon
Infineon
Infineon
IPD35N10S3L-26
IPD30N06S4L-23
BSP318S
Transistor
Transistor
Transistor
1
1
1
alternativ: 60V N-ch, 2.6A
Figure 24 Bill of Materials for LED High Side Return Application Circuit
Datasheet 34
Rev. 1.0, 2010-10-13
TLD5098EL
Application Information
IBO
ILoad
DRV
L1
VIN
LBO
DBO
VBO
VBATT
CBO
CIN
ISW
constant
VOUT
C1
C2
RL
2
4
TSW
SWO
14
1
IN
Provisional
Parts
SWCS
IVCC
RCS
CIVCC
VCC or VIVCC
ROVH
3
9
SGND
OVFB
PWM
IC2
10
SET
Microcontroller
(e.g. XC866)
Rfilter
ROVL
Cfilter
IC1
5
Input
PWMO TLD5098
EN / PWMI
FREQ / SYNC
COMP
RFB1
13
11
8
Output
Output
6
7
FBH
FBL
RFB2
VREF
CCOMP
RFB3
RFREQ
RCOMP
GND
12
Figure 25 Boost Voltage Application Circuit
Reference
Designator
Part
Number
Value
Manufacturer
Type
Quantity
1
DBO
Schottky, 3 A, 100 VR
Vishay
SS3H10
Diode
CBO
CIN
100 uF, 80V
100 uF, 50V
Panasonic
Panasonic
EEVFK1K101Q
Capacitor
Capacitor
1
1
EEEFK1H101GP
CCOMP
CIVCC
IC1
10 nF
100 uF, 6.3V
--
TBD
TBD
Capacitor
Capacitor
IC
1
1
1
1
1
1
1
1
2
1
1
1
1
Panasonic
Infineon
EEFHD0J101R
TLD5098
IC2
--
Infineon
XC886
IC
LBO
100 uH
Coilcraft
MSS1278T-104ML_
TBD
Inductor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Transistor
RCOMP
RFB1,RFB3
RFB2
10 kΩ
TBD
51 kΩ, 1%
1 kΩ, 1%
20 kΩ, 1%
51 kΩ, 1%
1 kΩ, 1%
50 mΩ, 1%
N-ch, 75 V, 65 mΩ
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Infineon
ERJ3EKF5102V
ERJ3EKF1001V
ERJ3EKF2002V
ERJP06F5102V
ERJ3EKF1001V
ERJB1CFR05U
IPD22N08S2L-50
RFREQ
ROVH
ROVL
RCS
TSW
Figure 26 Bill of Materials for Boost Voltage Application Circuit
Note:This is a very simplified example of an application circuit. The function must be verified in the real application.
Datasheet 35 Rev. 1.0, 2010-10-13
TLD5098EL
Application Information
11.1
Further Application Information
In fixed frequency mode where an external resistor configures the switching frequency the minimum boost inductor
is given by the formula in Figure 27.
•
•
•
•
L
V
R
f
MIN = Minimum Inductance Required During Fixed Frequency Operation
BO = Boost Output Voltage
CS = Current Sense Resistor
FREQ = Switching Frequency
V
[V] × R [Ω]
CS
BO
--------------------------------------------------------------------
≥
L
MIN
–3
106×10 [V] × f
[Hz]
FREQ
Figure 27 Minimum Inductance Required During Fixed Frequency Operation (B2G configuration)
In synchronization mode where an external clock source configures the switching frequency the minimum boost
inductor is given by the formula in Figure 28.
•
•
•
L
V
R
SYNC = Minimum Inductance Required During Synchronization Operation
BO = Boost Output Voltage
CS = Current Sense Resistor
V
[V] × R [Ω]
CS
BO
-----------------------------------------------------------
–3
L
≥
SYNC
106×10 [V] × 250kHz
Figure 28 Minimum Inductance Required During Synchronization Operation (B2G configuration)
•
•
•
Please contact us for information regarding the FMEA pin.
Existing App. Note (Title)
For further information you may contact http://www.infineon.com/
Datasheet
36
Rev. 1.0, 2010-10-13
TLD5098EL
Package Outlines
12
Package Outlines
0.35 x 45˚
1)
0.1 C D
0.1
3.9
+0.06
0.19
0.08
C
C
0.64
0.25
0.65
2)
0.05
0.2
0.25
6
M
M
0.2
D 8x
0.15
C A-B D 14x
D
Bottom View
0.2
3
A
1
7
14
8
1
7
14
8
Exposed
Diepad
B
0.1 C A-B 2x
1)
0.1
4.9
Index Marking
1) Does not include plastic or metal protrusion of 0.15 max. per side
2) Does not include dambar protrusion
PG-SSOP-14-1,-2,-3-PO V02
PG-SSOP-14
Figure 29 PG-SSOP-14
Green Product (RoHS compliant)
To meet the world-wide customer requirements for environmentally friendly products and to be compliant with
government regulations the device is available as a green product. Green products are RoHS-Compliant (i.e
Pb-free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020).
For further package information, please visit our website:
Dimensions in mm
http://www.infineon.com/packages.
Datasheet
37
Rev. 1.0, 2010-10-13
TLD5098EL
Revision History
13
Revision History
Revision
Date
Changes
Initial Datasheet
1.0
2010-10-13
Datasheet
38
Rev. 1.0, 2010-10-13
Edition 2010-10-13
Published by
Infineon Technologies AG
81726 Munich, Germany
© 2010 Infineon Technologies AG
All Rights Reserved.
Legal Disclaimer
The information given in this document shall in no event be regarded as a guarantee of conditions or
characteristics. With respect to any examples or hints given herein, any typical values stated herein and/or any
information regarding the application of the device, Infineon Technologies hereby disclaims any and all warranties
and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights
of any third party.
Information
For further information on technology, delivery terms and conditions and prices, please contact the nearest
Infineon Technologies Office (www.infineon.com).
Warnings
Due to technical requirements, components may contain dangerous substances. For information on the types in
question, please contact the nearest Infineon Technologies Office.
Infineon Technologies components may be used in life-support devices or systems only with the express written
approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure
of that life-support device or system or to affect the safety or effectiveness of that device or system. Life support
devices or systems are intended to be implanted in the human body or to support and/or maintain and sustain
and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may
be endangered.
相关型号：
TLD5191ES
TLD5191ES 是一款具有内置保护功能的同步 MOSFET H 桥 DC-DC 控制器。 该设计有利于以最高的系统效率和最少的外部组件驱动高功率 LED。 TLD5191ES 具有模拟和数字 (PWM) 调光及嵌入式 PWM 发生器。 开关频率可在 200 kHz 至 700 kHz 范围内调节。 内置扩频开关频率调制和强制连续电流调节模式改善了整体 EMC 行为。 此外，电流模式调节方案提供了一个由小型外部补偿元件维持的稳定调节环路。 可调软启动功能可限制启动时的电流峰值和电压过冲。 TLD5191ES 适用于汽车环境以及工业和消费类应用（例如无线充电）。
INFINEON
©2020 ICPDF网 联系我们和版权申明