TS19721D - Taiwan Semiconductor

TS19721D
Taiwan Semiconductor
Single-Stage PFC Buck Current Control LED Driver
With High Voltage MOSFET Integrated
DESCRIPTION
FEATURES
TS19721D a very efficient constant current controller
●
Integrated 600V Power MOSFET
for driving LED lamps in non-dimmable lighting
●
Low THD <20% (Option)
applications. The IC provides a high power factor
●
Constant current accuracy within ±2.5%
correction
with
●
High Power Factor Correction >0.9
boundary conduction mode (BCM) operation in a
and
constant
current
accuracy
●
Boundary Current Mode control
single stage buck topology. The TS19721D controller
●
LED open protection & short protection
is easy to integrate with a small BOM and includes an
●
Over current protection (OCP)
internal high voltage power MOSFET for PWM control.
●
●
Over temperature protection (OTP)
Compliant to RoHS directive 2011/65/EU and in
accordance to WEEE 2002/96/EC.
Halogen-free according to IEC 61249-2-21
definition.
Total harmonic distortion (THD) and efficiency are
optimized by an external resistor. The line and load
●
regulation of LED current are easily maintained to
within ±2.5%. TS19721D also provides VCC overvoltage protection, and output open/short circuit
APPLICATION
protection.
●
SOP-8
LED lighting system
Pin Definition:
1. CS
2. COM
3. N/C
4. Drain
5. RT
6. GND
7. VCC
8. CS
Notes: Moisture sensitivity level: level 3. Per J-STD-020
ABSOLUTE MAXIMUM RATINGS (TA = 25°C unless otherwise specified) (Note 1)
PARAMETER
SYMBOL
LIMIT
UNIT
Power Supply Pin
VCC
40
V
RT Voltage to GND
VRT
-0.3 to 5.5
V
DRAIN Voltage to GND
VOUT
-0.3 to 620
V
CS Voltage to GND
VCS
-0.3 to 5.5
V
VCOM
-0.3 to 5.5
V
Junction Temperature Range
TJ
-40 to +150
°C
Storage Temperature Range
TSTG
-65 to +150
°C
Lead Temperature (Soldering 10 sec)
TLEAD
260
°C
PD
0.3
W
HBM
2
kV
MM
200
V
COM Voltage to GND
Power Dissipation @ TA=25 °C
ESD Rating (Human Body Mode)
ESD Rating (Machine Mode)
(Note 2)
(Note 2)
Document Number: DS_P0000278
1
Version: A15
TS19721D
Taiwan Semiconductor
THERMAL PERFORMANCE
(Note 3)
PARAMETER
Thermal Resistance - Junction to Case
Thermal Resistance - Junction to Ambient
SYMBOL
LIMIT
RӨJC
106.6
o
220
o
RӨJA
UNIT
C/W
C/W
RECOMMENDED OPERATING CONDITION (TA = 25°C unless otherwise specified) (Note 4)
PARAMETER
SYMBOL
LIMIT
UNIT
Power Supply Pin
VCC
33
V
RT Voltage to GND
VRT
-0.3 to 5
V
DRAIN Voltage to GND
VOUT
-0.3 to 620
V
CS Voltage to GND
VCS
-0.3 to 5
V
VCOM
-0.3 to 5
V
Operating Junction Temperature Range
TJ
-40 to +150
°C
Operating Ambient Temperature Range
TOPA
-40 to +85
°C
COM Voltage to GND
ELECTRICAL SPECIFICATIONS (TA = 25°C unless otherwise specified)
PARAMETER
SYMBOL
CONDITION
MIN
TYP
MAX
UNIT
VCC= VUVLO(on) -1V
--
45
--
μA
With 1nF load on out pin
--
2.1
2.6
mA
Supply Voltage
Start-up Current
VCC(ST)
Operating Current
IOPA
UVLO(off)
VUVLO(off)
7
8
9
V
UVLO(on)
VUVLO(on)
16
17.5
19
V
VOVP
29
31
33
V
Feedback Reference Voltage
VFB
0.196
0.2
0.204
V
Transconductance
GM
--
58
--
μS
IO-SINK
--
5.8
--
μA
IO-SOURCE
--
5.8
--
μA
CS Limit Voltage
VOCP
--
1.4
--
V
Open Loop Voltage
VOLP
--
5
--
V
Leading-Edge Blanking Time
LEBt
--
400
--
ns
--
100
--
ns
fSTR
3
4.5
6
kHz
TON(MAX)
14
--
--
μs
Thermal Shutdown
--
150
--
°C
Thermal Shutdown Release
--
120
--
°C
OVP Level on VCC Pin
Voltage Feedback
Output Sink Current
Output Source Current
Current Sensing
CS Pin Open
Delay to Output
Switching Frequency
Start Frequency
Maximum On Time
Thermal Section
(Note 5, 6)
Document Number: DS_P0000278
2
Version: A15
TS19721D
Taiwan Semiconductor
ELECTRICAL SPECIFICATIONS (TA = 25°C unless otherwise specified)
PARAMETER
MOSFET Section
SYMBOL
CONDITION
MIN
TYP
MAX
UNIT
BVDS
VGS = 0V, ID = 250µA
600
--
--
V
IDSS
VDS = 600V, VGS = 0V
--
--
10
µA
TC=25 °C
--
--
2
A
--
--
8
A
--
--
4.4
Ω
--
--
55
mJ
--
249
--
--
30.7
--
(Note 7)
Drain-Source Breakdown
Voltage
Zero Gate Voltage Drain Current
MOSFET Section
(Note 8,9)
Continuous Drain Current
ID
Pulsed Drain Current
IDM
Drain-Source On-Resistance
RDS(ON)
Single Pulse Avalanche Energy
EAS
Input Capacitance
CISS
Output Capacitance
COSS
Reverse Transfer Capacitance
CRSS
Turn-On Delay Time
td(on)
Turn-On Rise Time
tr
Turn-Off Delay Time
td(off)
Turn-Off Fall Time
VGS = 10V, ID = 1A
VDD=50V, IAS=2A,
L=25mH, RG =25Ω
VDS = 25V, VGS = 0V,
f = 1.0MHz
--
5
--
--
9.1
--
VGS = 10V, ID = 2A,
--
9.8
--
VDD = 300V, RG =25Ω
--
17.4
--
--
12.4
--
tf
pF
ns
Note:
1.
Stresses listed as the above “Absolute Maximum Ratings” may cause permanent damage to the device. These are for
stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the operational
sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may
remain possibility to affect device reliability.
2.
Devices are ESD sensitive. Handing precaution recommended.
3.
Thermal Resistance is specified with the component mounted on a low effective thermal conductivity test board in free air at
TA=25°C.
4.
The device is not guaranteed to function outside its operating conditions.
5.
Guaranteed by design.
6.
Auto Recovery Type.
7.
Pulse test: PW ≤ 300µs, duty cycle ≤ 2%
8.
For DESIGN AID ONLY. Limited by maximum junction temperature.
9.
Switching time is essentially independent of operating temperature.
Document Number: DS_P0000278
3
Version: A15
TS19721D
Taiwan Semiconductor
ORDERING INFORMATION
PART NO.
TS19721DCS RLG
PACKAGE
PACKING
SOP-8
2,500pcs / 13” Reel
Note:
1.
Compliant to RoHS Directive 2011/65/EU and in accordance to WEEE 2002/96/EC.
2.
Halogen-free according to IEC 61249-2-21 definition.
Function Block
PIN DESCRIPTION
PIN NO.
NAME
1,8
CS
2
COM
FUNCTION
Input current sense pin.
Output pin of error amplifier.
3
N/C
4
Drain
No Connect.
Drain of internal HV MOS.
5
RT
Efficiency / THD option pin.
6
GND
7
VCC
Ground return for all internal circuitry.
Power supply pin for all internal circuitry.
Document Number: DS_P0000278
4
Version: A15
TS19721D
Taiwan Semiconductor
APPLICATION INFORMATION
Start-up Current
The typical start-up current is around 45μA. The very low start-up current allows the PWM controller to operate with
a high value start-up resistor and reduce overall power dissipation.
UVLO(Under Voltage Lockout)
A hysteretic UVLO comparator is implemented in TS19721D. The turn-on and turn-off thresholds level are fixed at
17.5V and 8V respectively. This hysteresis shown in Fig.1 ensures that the start-up capacitor will be adequate to
supply the chip during start-up. For quick start-up of the LED driver, the start-up resistor & capacitor needs to
optimize for application.
Fig. 1
LEB(Leading-Edge Blanking)
Each time the power MOSFET is switched on, a turn-on spike will inevitably occur at the sense resistor. A 400ns
leading-edge blanking time is built in to avoid a false trigger.. Conventional RC filtering can therefore be omitted.
During this blanking period, the current-limit comparator is disabled and cannot switch off the gate driver.
OCP(Over Current Protection)
The TS19721D has built-in cycle-by-cycle over-current protection functions available at the CS pin. When the CS
pin voltage is larger than VOCP (1.4V), the gate output will be turned off immediately to avoid over temperature
damage.
OVP (Over Voltage Protection) on VCC
To prevent the LED driver from being damaged, the TS19721D has an integrated OVP on VCC. When the VCC
voltage is higher than the VOVP (31V), the output MOSFET will be shut down immediately. The OVP on the VCC pin
will automatically recover.. If the OVP triggers, the output PWM pulses will be stopped until the VCC pin voltage
returns to the UVLO off level when the TS19721D will automatically recover as shown in Fig. 2.
Fig. 2
Document Number: DS_P0000278
5
Version: A15
TS19721D
Taiwan Semiconductor
PACKAGE OUTLINE DIMENSIONS (Unit: Millimeters)
SOP-8
SUGGESTED PAD LAYOUT (Unit: Millimeters)
MARKING DIAGRAM
x = Series code
Y = Year Code
M = Month Code for Halogen Free Product
O =Jan P =Feb Q =Mar R =Apr
S =May T =Jun U =Jul
V =Aug
W =Sep X =Oct
Y =Nov Z =Dec
L = Lot Code (1~9, A~Z)
Document Number: DS_P0000278
6
Version: A15
TS19721D
Taiwan Semiconductor
Notice
Specifications of the products displayed herein are subject to change without notice. TSC or anyone on its behalf,
assumes no responsibility or liability for any errors or inaccuracies.
Information contained herein is intended to provide a product description only. No license, express or implied, to
any intellectual property rights is granted by this document. Except as provided in TSC’s terms and conditions of
sale for such products, TSC assumes no liability whatsoever, and disclaims any express or implied warranty,
relating to sale and/or use of TSC products including liability or warranties relating to fitness for a particular purpose,
merchantability, or infringement of any patent, copyright, or other intellectual property right.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications.
Customers using or selling these products for use in such applications do so at their own risk and agree to fully
indemnify TSC for any damages resulting from such improper use or sale.
Document Number: DS_P0000278
7
Version: A15