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부품번호 | IL9910BDH 기능 |
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기능 | UNIVERSAL HIGH-VOLTAGE LED DRIVER | ||
제조업체 | IK Semiconductor | ||
로고 | |||
Universal High-Voltage LED Driver
TECHNICAL DATA
IL9910A/B/C
Description
The IL9910 is a PWM high-efficiency LED driver control IC.
The IC is purposed for control of LED lighting as source of constant current
Features
• 8V to 450V input range
• Maximum external consumption current on VDD pin IDD(ext) 1 mA
• Operating temperature range -40oC ~ +85oC
a Applications from a few mA to more than 1A Output
• Brightness control for LED string from one to hundreds of diodes
• PWM Low-Frequency LED Dimming
Application
•DC/DC or AC/DC LED Driver application
•RGB Backlighting LED Driver
•Back Lighting or Flat Panel Display
•General purpose constant current source
•Signage and Decorative LED Lighting
•Automotive
•Chargers
D- suffix
SO-8 case
N- suffix
DIP-8 case
DH suffix
16 SO-16 case
01
ORDERING INFORMATION
Device
IL9910AD
IL9910AN
IL9910ADH
IL9910BD
IL9910BN
IL9910BDH
IL9910CD
IL9910CN
IL9910CDH
Vcs
225~242mV
242~257mV
257~275mV
Package Operating Temperature Range
SOP 8
DIP 8
SOP 16
SOP 8
DIP 8
SOP 16
TA = - 40 ~ 85℃
SOP 8
DIP 8
SOP 16
1 November 2010, Ver. 02
IL9910A/B/C
ELECTRICAL CHARACTERISTICS
(Т A =-40 ~ 85°C)
Symbol
VDD
IDD(ext)
UVLO
VEN(hi)
REN
VCS(hi)
fOSC
IINsd
VGATE(hi)
VGATE(lo)
TBLANK
TDELAY
TRISE
TFALL
Parameter
Testing mode
Internally regulated VIN = 8 V
voltage
VIN = 450 V
VDD pin current
VIN = 8 V
available for external VIN = 100 V
circuit
Under voltage lockout VIN rise
threshold
from 5 to 8 V
Enable high level
output voltage
VIN = 8 V
VIN = 450 V
PWM_D pin pull-down VEN = 5 V
resistance
Current sense pull-in VIN = 8 V
threshold Voltage
A
B
C
Internal oscillator
frequency
VIN = 8 V
ROSC = 1 MOhm
VIN = 8 V
ROSC = 226 kOhm
Shutdown mode
PWM_D pin is
consumption current connected to GND,
VIN = 8 V
Gate high level output PWM_D pin is
voltage
connected to VDD,
VIN = 8 V
VIN = 450 V
Gate low level output
voltage
PWM_D pin is
connected to GND,
VIN = 8 V
VIN = 450 V
Current sense
blanking interval
VCS = 0.55VLD,
VLD = VDD
Delay from CS trip to Vin = 12V,
VLD
GATE lo
= 0.15, VCS = 0 to
0.22V after TBLANK
GATE output rise time CGATE = 500pF
GATE output fall time CGATE = 500pF
Value
Min Max
7.0 8.0
- 1.0
6.20 6.95
2.4 -
50 150
225 275
225 242
242 257
257 275
20 30
80 120
- 1.0
6.7 -
- 0.3
150 280
300
50
50
Ambient
temperature, Unit
°С
25 10
V
mA
V
V
kOhm
mV
kHz
mA
V
V
ns
ns
ns
ns
November 2010, Ver. 02
4
4페이지 IL9910A/B/C
In the buck-boost converter, the energy from the input source is first stored in the inductor or a Flyback
transformer when the switching transistor is ON. The energy is then delivered to the output during the OFF
time of the transistor.
When the energy stored in the Flyback inductor is not fully depleted by the next switching cycle (continuous
conduction mode) the DC conversion between input and output voltage is given by:
VOUT = - VIN*D/(1-D)
The output voltage can be either higher or lower than the input voltage, depending on duty ratio.
Let us discuss the above example of an automotive LED driver that needs to drive three HB LEDs at 350mA.
Knowing the nominal input voltage VIN=12V, the nominal duty ratio can be determined, as
D=VLEDs/(VIN+VLEDs)=9/(12+9)=0.43
Then, given the switching frequency, in this example Fosc=50KHz, the required on-time of the MOSFET
transistor can be calculated:
Ton=D/Fosc=8.6 microsecond
The required value of the inductor is given by:
L = VIN*Ton/(0.3*ILED)= 0.98mH, use 1mH
Output Capacitor
Unlike the buck topology, the buck-boost converter requires an output filter capacitor to deliver power to the
LED string during the ON time of switching the transistor, When the Flyback inductor current is diverted from
the output of the converter.
In order to average the current in the LED, this capacitor must present impedance to the switching output AC
ripple current that is much lower than the dynamic impedance ROUT of the LED string. If we assume ROUT=3
Ohm in our example, in order to attenuate the switching ripple by a factor of 10, a capacitor with equivalent
series resistance(ESR)of 0.3 Ohm is needed. A chip SMT tantalum capacitor can be selected for this
purpose.
Figure 2: Typical Application Circuit (Buck Driver)
DC voltage
8 - 135v
2A
250V
0.1 uF
250V
2R
NTC
coilcraft
BUSH-2820R5B
0.1 uF
250V
0.1
uF
250V
Optional for PFC
1uF
10V
0.1 uF
250V
BYV26B
16 HB
LEDs
280
kΩ
VN2224
0. 2Ω
220nF
November 2010, Ver. 02
7
7페이지 | |||
구 성 | 총 11 페이지수 | ||
다운로드 | [ IL9910BDH.PDF 데이터시트 ] |
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
IL9910BD | UNIVERSAL HIGH-VOLTAGE LED DRIVER | IK Semiconductor |
IL9910BDH | UNIVERSAL HIGH-VOLTAGE LED DRIVER | IK Semiconductor |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |