AP8263E6R [AITSEMI]
PWM CONTROLLER GREEN MODE;
| 型号： | AP8263E6R |
| 厂家： | 
AiT Semiconductor |
| 描述： | PWM CONTROLLER GREEN MODE |
| 文件： | 总10页 (文件大小：205K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AP8263
AiT Semiconductor Inc.
www.ait-ic.com
PWM CONTROLLER
GREEN MODE
DESCRIPTION
FEATURES
The AP8263 includes all necessary function to build
an easy and cost effective solution for low power
supplies to meet the international power conservation
requirements. AP8263 offers complete protection
coverage with automatic self-recovery feature
including Cycle-by-Cycle current limiting (OCP), over
voltage protection (OVP), over temperature
protection (OTP), soft-start and Burst mode
operation. Excellent EMI performance is achieved
with frequency modulation. The device provides an
advanced platform well suited for low standby-power
and cost-effective flyback converters.
Proprietary Frequency Jitter for EMI
Green Mode Control
Audio Noise Free
Internal Slope Compensation
Owning soft start-up function
Good Protection Coverage With Auto
Self-Recovery
Available in SOT-26 Package
APPLICATION
DVB Power Supplies
Power Adapter
The AP8263 is available in SOT-26 package
Battery Charger
Open-frame SMPS
ORDERING INFORMATION
TYPICAL APPLICATION
Package Type
SOT-26
Part Number
AP8263E6R
AP8263E6VR
E6
V: Halogen free Package
Note
R: Tape & Reel
SPQ: 3,000/Reel
AiT provides all RoHS products
Suffix “ V “ means Halogen free Package
REV3.0
- JUL 2010 RELEASED, OCT 2016 UPDATED -
- 1 -
AP8263
AiT Semiconductor Inc.
www.ait-ic.com
PWM CONTROLLER
GREEN MODE
PIN DESCRIPTION
Top View
Pin #
Symbol
GND
FB
Function
1
2
Ground
Feedback input pin. The PWM duty cycle is determined by voltage level into this
pin and CS pin input.
3
4
5
6
TS
CS
Over temperature sense pin. Connected through a NTC resistor to ground.
Current sense input pin. Connected to MOSFET current sensing resistor node.
Power supply pin.
VDD
GATE
Totem-pole gate drive output for the power MOSFET.
REV3.0
- JUL 2010 RELEASED, OCT 2016 UPDATED -
- 2 -
AP8263
AiT Semiconductor Inc.
www.ait-ic.com
PWM CONTROLLER
GREEN MODE
ABSOLUTE MAXIMUM RATINGS
Supply Voltage Pin VDD
-0.3V ~ 28V
-0.3V ~ 7V
-0.3V ~ 7V
-0.3V ~ 7V
10mA
FB Input Voltage
SENSE Input Voltage
TS Input Voltage
VDD Clamp Current
VDD Clamp Voltage
32V
Electrostatic Discharge Human Body Mode
(HBM, ESDA/JEDEC JDS-001-2014)
Electrostatic Discharge Machine Mode
Junction Temperature
2000V
200V
-40℃~ 150℃
-55℃~ 150℃
260℃
Storage Temperature Range
Lead Temperature (Soldering, 10secs)
Stress beyond above listed “Absolute Maximum Ratings” may lead permanent damage to the device. These are stress ratings only and
operations of the device at these or any other conditions beyond those indicated in the operational sections of the specifications are not
implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
RECOMMENDED OPERATING CONDITIONS
Parameter
MIN
12
MAX
25
Units
V
VDD Voltage
Operating Ambient Temperature
-20
85
℃
REV3.0
- JUL 2010 RELEASED, OCT 2016 UPDATED -
- 3 -
AP8263
AiT Semiconductor Inc.
www.ait-ic.com
PWM CONTROLLER
GREEN MODE
ELECTRICAL CHARACTERISTICS
TJ=25°C, VDD=18V, unless otherwise specified
Parameter
Symbol
Conditions
Min.
58
Typ. Max.
Unit
kHz
OSCILLATOR section
VDD=18V, FB=5V,
CS=0V
Normal Oscillation Frequency
FOSC
65
71
Frequency Temperature Stability
Frequency Voltage Stability
Burst Mode Base Frequency
Frequency Modulation range
/Base frequency
Δf_Temp
Δf_VDD
1
1
%
%
FOSC_BM
25
kHz
Δf_OSC
f_jitter
±4
32
%
Jitter Frequency
Hz
FB section
PWM Input Gain
AVCS
ΔVFB /ΔVCS
1.8
4.1
V/V
V
VFB Open Loop Voltage
VFB_Open
Short FB pin to GND and
measure current
FB pin shoTS circuit current
IFB_ShoTS
0.4
mA
The Threshold Enter Green Mode
The Threshold Exit Burst Mode
The Threshold Enter Burst Mode
Power Limiting FB Threshold
Voltage
VREF
_
1.95
1.2
V
V
V
Green
VREF
_
Burst_H
VREF
_
1.1
Burst_L
VTH_PL
3.6
V
Power limiting Debounce Time
TD_PL
75
90
16
105
ms
Input Impedance
ZFB_IN
kΩ
VDD=18V, FB=3V,
CS=0V
Maximum Duty Cycle
DC_MAX
70
80
90
%
CS section
Leading Edge Blanking Time
Input Impedance
T_blanking
270
500
ns
ZSENSE_IN
40
kΩ
Over Current Detection and
Control Delay
TD _OC
120
ns
Over Current Threshold Voltage
at zero Duty Cycle
VTH
_
0.75
8
V
OC
Soft-Start up Time
tSS
ms
REV3.0
- JUL 2010 RELEASED, OCT 2016 UPDATED -
- 4 -
AP8263
AiT Semiconductor Inc.
www.ait-ic.com
PWM CONTROLLER
GREEN MODE
Parameter
Symbol
Conditions
Min.
9.5
Typ. Max.
Unit
GATE section
Output Low Level
Output High Level
VOL
VOH
VDD = 14V, IO = 5mA
VDD = 14V, IO = 20mA
0.5
V
V
Output Clamp Voltage Level
Output Rising Time
Output Falling Time
SUPPLY section
V_Clamp
Tr
15
160
90
V
VDD = 12V, CL = 1nf
VDD = 12V, CL = 1nf
ns
ns
Tf
VDD =12V,
VDD Start up Current
I_VDD_Start
Measure Leakage
current into VDD
VFB=3V
5
20
uA
Operation Current
I_VDD_Ops
UVLO
1.8
9
mA
V
VDD Under Voltage Lockout
Enter
8
9.5
(down)
UVLO
VDD Under Voltage Lockout
Exit (Recovery)
14.3
15.5
16.3
V
(up)
VDD Zener Clamp Voltage
Over Voltage Protection Voltage
Pull-up PMOS active
TS section
VDD_Clamp
VDD_OVP
VDD_Pull
IVDD = 5mA
30
26
V
V
V
CS=0V, FB=3V
28
13
30
Output Current of TS Pin
Threshold Voltage for OTP
OTP Debounce Time
Float Voltage at TS Pin
External OVP Threshold Voltage
ITS
95
100
1
105
uA
V
VTH_OTP
TD_OTP
VTS_Open
VTS_OVP
0.96
1.04
6
cycle
V
2.65
4
V
REV3.0
- JUL 2010 RELEASED, OCT 2016 UPDATED -
- 5 -
AP8263
AiT Semiconductor Inc.
www.ait-ic.com
PWM CONTROLLER
GREEN MODE
TYPICAL CIRCUIT
REV3.0
- JUL 2010 RELEASED, OCT 2016 UPDATED -
- 6 -
AP8263
AiT Semiconductor Inc.
www.ait-ic.com
PWM CONTROLLER
GREEN MODE
DETAILED INFORMATION
Overview description
The AP8263 includes all necessary function to build an easy and cost effective solution for low power supplies
to meet the international power conservation requirements.
Start-up current
Startup current of AP8263 is designed to be very low so that VDD could be charged up above UVLO (up)
threshold level and device starts up quickly. Also a large value startup resistor can be used to minimize the
power loss.
Green Mode Operation
At light load or no load condition, the switch loss become the major loss of the power supply, to reduce the
power wasted in such conditions, based on a special designed voltage controlled oscillator, green mode
operation of the power supply can be achieved by using AP8263. The controller will judge the load condition
base on the voltage of FB pin. In light load the FB voltage will decrease, when VFB is lower than a set
threshold voltage, the operating frequency of the power supply begin to decrease, the minimum frequency is
set to above 22kHz to avoid audio noise.
When VFB decrease further, the power supply will enter into burst mode operation to decrease the power
consumed at no load condition.
Built-in Slope Compensation
The sensed voltage across the CS resistor is used for PWM control, and pulse by pulse current limit, Built-in
slope compensation circuit adds a voltage ramp onto the current sense input voltage. This greatly improves
the close loop stability and prevents the sub-harmonic oscillation of peak current mode operation.
Gate Driver
The output stage of AP8263 is a fast totem pole gate driver. Dead time has been added to minimize heat
dissipation, increases efficiency and enhances reliability. The output driver is clamped by an internal 15V
Zener diode in order to protect power MOSFET transistors against undesirable gate over voltage. A soft
driving waveform is implemented to minimize EMI.
REV3.0
- JUL 2010 RELEASED, OCT 2016 UPDATED -
- 7 -
AP8263
AiT Semiconductor Inc.
www.ait-ic.com
PWM CONTROLLER
GREEN MODE
Frequency Jitter
The frequency jitter function is integrated in the controller, the jitter is modulated by a periodic signal, the
modulate signal frequency is much smaller than the oscillator frequency, By this way，the EMI noise has a
wider spectrum with lower amplitudes.
Over Temperature Protection
A NTC resistor in series with a regular resistor should connect between TS and GND for temperature sensing
and protection. NTC resistor value becomes lower when the ambient temperature rises. With the fixed internal
current flowing through the resistors, the voltage at TS pin becomes lower at high temperature. The internal
OTP circuit is triggered and shutdown the MOSFET when the sensed input voltage is lower than VTH_OTP
.
Protection
To increase the reliability of power supply system, many protection functions is integrated in this controller,
including Cycle-by-Cycle current limiting (OCP), Over Load Protection (OLP) and over voltage clamp, Under
Voltage Lockout on VDD (UVLO). At overload condition when FB input voltage exceeds power limit threshold
value for more than TD_PL (power limit debounce time), the controller reacts to shut down the output power
MOSFET. Device restarts when VDD voltage drops below UVLO limit. VDD is supplied by transformer auxiliary
winding output. It is clamped when VDD is higher than threshold value. The power MOSFET is shut down
when VDD drops below UVLO limit and device enters power on start-up sequence thereafter.
REV3.0
- JUL 2010 RELEASED, OCT 2016 UPDATED -
- 8 -
AP8263
AiT Semiconductor Inc.
www.ait-ic.com
PWM CONTROLLER
GREEN MODE
PACKAGE INFORMATION
Dimension in SOT-26 (Unit: mm)
Symbol
Min
Max
A
A1
A2
b
1.050
0.000
1.050
0.300
0.100
2.820
1.500
2.650
1.250
0.100
1.150
0.400
0.200
3.020
1.700
2.950
c
D
E
E1
e
0.950TYP
e1
L
1.800
2.000
0.600
0.700REF
0.300
L1
θ
8°TYP
REV3.0
- JUL 2010 RELEASED, OCT 2016 UPDATED -
- 9 -
AP8263
AiT Semiconductor Inc.
www.ait-ic.com
PWM CONTROLLER
GREEN MODE
IMPORTANT NOTICE
AiT Semiconductor Inc. (AiT) reserves the right to make changes to any its product, specifications, to
discontinue any integrated circuit product or service without notice, and advises its customers to obtain the
latest version of relevant information to verify, before placing orders, that the information being relied on is
current.
AiT Semiconductor Inc.'s integrated circuit products are not designed, intended, authorized, or warranted to
be suitable for use in life support applications, devices or systems or other critical applications. Use of AiT
products in such applications is understood to be fully at the risk of the customer.
As used herein may
In order to
involve potential risks of death, personal injury, or servere property, or environmental damage.
minimize risks associated with the customer's applications, the customer should provide adequate design and
operating safeguards.
AiT Semiconductor Inc. assumes to no liability to customer product design or application support. AiT
warrants the performance of its products of the specifications applicable at the time of sale.
REV3.0
- JUL 2010 RELEASED, OCT 2016 UPDATED -
- 10 -
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