BP3135D.pdf 데이터시트 (총 8 페이지) - 파일 다운로드 BP3135D 데이타시트 다운로드

No Preview Available !

BP3135D
High Precision PSR Constant Current LED Driver
Description
BP3135D is a high precision primary-side feedback
and regulation controller for LED lighting, it operates
in constant current control mode and is designed to
work in inductor current discontinuous conduction
mode and especially suitable for flyback convertor
under universal input. The output power of system is
recommended to less than 12W.
BP3135D integrates 650V power MOSFET. Since
adopting primary sense and feedback control
technology, the secondary sense and feedback circuit is
eliminated. The loop compensation components are
also removed while maintaining stability overall
operating conditions. It uses patent pending source
driver architecture and demagnetization sensing
technology, the operating current is very low, and it
doesn’t need the auxiliary winding for sensing the
output current and supplying the chip. The low
component counts and small system size are realized.
Since using the proprietary high accurate current sense
method, the BP3135D realizes ±5% accuracy of LED
The BP3135D offers rich protection functions
including LED open/short circuit protection, CS
resistor short circuit protection, thermal regulation, VCC
under voltage protection.
Typical Application
Features
Built-in 650V Power MOSFET
Constant current control without secondary sense
and feedback circuit.
No Auxiliary winding for sensing and supplying
Ultra low operating current to improve efficiency
Universal input voltage
±5% LED current accuracy
LED short and open circuit protection
CS resistor short circuit protection
VCC under-voltage protection
Thermal regulation
Available in DIP-8 package
Applications
LED Panel Light
LED Ceiling Light
LED Bulb
Other LED lighting
NP NS
AC BP3135D
4 VCC
NC 8
2 ROVP
NC 7
1 CS
DRAIN 6
3 GND DRAIN 5
BP3135D_CN_DS_Rev.1.0
Figure 1. Typical application circuit for BP3135D
www.bpsemi.com
Bright Power Semiconductor Co. Confidential – Customer Use Only
1

No Preview Available !

BP3135D
High Precision PSR Constant Current LED Driver
Ordering Information
Part Number
BP3135D
Package
DIP8
Operating
Temperature
-40 ℃ to
105 ℃
Package Method
Tube
50 Piece/Tube
Marking
BP3135D
XXXXXY
WXYY
Pin Configuration and Marking Information
CS
ROVP
GND
VCC
NC
NC
DRAIN
DRAIN
XXXXXY: Lot Code
W: Sign
X: Year
YY: Week
Pin Definition
Figure 2. Pin configuration
Pin No.
1
2
3
4
5,6
7,8
Name
CS
ROVP
GND
VCC
DRAIN
NC
Description
Current sense. This pin connects a current sense resistor to GND to detect
the primary current of transformer.
Connect a ROVP resistor to GND to set the LED open voltage.
Ground
Power supply
Internal high voltage MOSFET Drain
No connection, must be floated
BP3135D_CN_DS_Rev.1.0
www.bpsemi.com
Bright Power Semiconductor Co. Confidential – Customer Use Only
2

No Preview Available !

BP3135D
High Precision PSR Constant Current LED Driver
Absolute Maximum Ratings (note1)
Symbol
Parameters
Range
Units
ICC_MAX
VCC pin maximum sink current
5 mA
DRAIN Internal HV MOSFET drain voltage
-0.3~650
V
CS Current sense pin input voltage
-0.3~6
V
ROVP
Set the LED open voltage
-0.3~6
V
PDMAX Power dissipation (note2)
0.9 W
θJA Thermal resistance (Junction to Ambient)
TJ Operating junction temperature
TSTG Storage temperature range
80
-40 to
150
-55 to
150
℃/W
ESD (note3)
2 KV
Note 1: Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. Under “recommended operating
conditions” the device operation is assured, but some particular parameter may not be achieved. The electrical characteristics table defines the operation
range of the device, the electrical characteristics is assured on DC and AC voltage by test program. For the parameters without minimum and maximum value
in the EC table, the typical value defines the operation range, the accuracy is not guaranteed by spec.
Note 2: The maximum power dissipation decrease if temperature rise, it is decided by TJMAX, θJA, and environment temperature (TA). The maximum power
dissipation is the lower one between PDMAX = (TJMAX - TA)/ θJA and the number listed in the maximum table.
Note 3: Human Body mode, 100pF capacitor discharge on 1.5KΩ resistor
Recommended Operation Conditions
Symbol
POUT1
POUT2
FOP
Parameter
Output power (input voltage 230V±15%)
Output power (input voltage 85V265V)
System operating frequency
Range
< 15
< 12
<120
Unit
W
W
KHz
BP3135D_CN_DS_Rev.1.0
www.bpsemi.com
Bright Power Semiconductor Co. Confidential – Customer Use Only
3

No Preview Available !

BP3135D
High Precision PSR Constant Current LED Driver
Electrical Characteristics (Notes 4, 5) (Unless otherwise specified, VCC=15V and TA =25 )
Symbol
Parameter
Conditions
Min. Typ. Max. Units
Supply Voltage Section
VCC_CLAMP
VCC clamp voltage
VCC_ON Turn on threshold voltage
VCC_UVLO
Turn off threshold voltage
IST VCC startup current
IOP VCC operating current
Current Sense Section
1mA
VCC rising
VCC falling
VCC= V -CC-ON 1V
FOP=70KHz
17 V
14 V
9V
50 100 uA
100 150 uA
VCS_TH
Threshold voltage for
peak current limit
388 400 412 mV
TLEB Leading edge blanking
time for current sense
TDELAY
Switch off delay time
500 ns
200 ns
Switching Frequency
FMIN Minimum working
frequency
3 KHz
FMAX Maximum working
frequency
VROVP Voltage of ROVP Pin
120 KHz
0.5 V
Maximum Duty Cycle
DMAX Maximum duty cycle
42 %
MOSFET Section
RDS_ON
Static drain-source on- VGS=15V/IDS=0.6A
resistance
7
BVDSS
Drain-source breakdown VGS=0V/IDS=250uA
650
voltage
Ω
V
IDSS
Drain-source leakage
VGS=0V/VDS=650V
current
1 uA
Over Temperature Protection
TREG Thermal shutdown
threshold
150
Note 4: production testing of the chip is performed at 25°C.
Note 5: the maximum and minimum parameters specified are guaranteed by test, the typical value are guaranteed by design, characterization and statistical
analysis
BP3135D_CN_DS_Rev.1.0
www.bpsemi.com
Bright Power Semiconductor Co. Confidential – Customer Use Only
4

No Preview Available !

BP3135D
High Precision PSR Constant Current LED Driver
Internal Block Diagram
VCC
9.0V 14V
17V
Thermal
Regulation
DRAIN
VCC HV MOS
UVLO
Reset
OCP
OVP
ROVP
GND
CC
&Logic Control
LEB
+
Current
Sense
-
400mV
CS
Figure 3. BP3135D Internal Block Diagram
Function Description
The BP3135D is a high performance power switch
specially designed for LED lighting, with patent
constant current control technology. The BP3135D
integrates a 650V power MOSFET. The accurate LED
current can be realized without opto-coupler, TL431
feedback circuit and auxiliary winding while
minimizing the external component count, lowering
the total bill of material cost.
Start Up
Constant Current Control
Cycle-by-Cycle current sense is adopted in BP3135D,
the CS is connected to the current sense comparator,
and the voltage on CS will be compared with the
internal 400mV reference voltage, the MOSFET will
be switched off when the voltage on CS reaches the
threshold. The output of the comparator includes a
500ns leading edge blanking time.
The primary peak current is given by:
The VCC capacitor will be charged through the start-
up resistor when the system is powered on. Once the
VCC voltage reaches the start-up threshold, the
BP3135D will start to switch. The BP3135D
integrates a 17V zener for VCC clamping. Due to the
ultra-low operating current, the auxiliary winding is
not needed to supply the IC.
I P_PK
400
RCS
(mA)
Where RCS: the sense resistor
The current in LED can be calculated by the equation:
BP3135D_CN_DS_Rev.1.0
www.bpsemi.com
Bright Power Semiconductor Co. Confidential – Customer Use Only
5