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AP3983E Datasheet Download - Diodes

Номер произв AP3983E
Описание HIGH FREQUENCY PRIMARY SIDE POWER SWITCHER
Производители Diodes
логотип Diodes логотип 



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AP3983E Даташит, Описание, Даташиты
AP3983E
HIGH FREQUENCY PRIMARY SIDE POWER SWITCHER FOR OFF-LINE SMPS
Description
The AP3983E is high frequency power switcher for power supplies
with better conversion efficiency, better voltage & current accuracy,
and improved protection functions. Typical applications include
adapter for ADSL, home appliance power supply, LED lighting power
supply and PC auxiliary power supplies. The AP3983E with built in
MOSFET, regulates the output voltage and current in the primary side
by piece-wise Pulse Frequency Modulation (p-PFM) in discontinuous
conduction mode (DCM). The system operating frequency reduces
linearly from heavy load to light load in each interval of the p-PFM, and
enters constant current mode when the load current equals to the
maximum system output current.
The AP3983E provides operating frequency dithering function to
improve EMC performance of power supply. The AP3983E also has
built-in fixed cable voltage drop compensation and adjustable line
voltage compensation.
The AP3983E solution has fewer component number, smaller size,
and lower total cost.
The AP3983E is packaged in PDIP-7.
Pin Assignments
(Top View)
CPC 1
FB 2
VCC 3
CS 4
7 GND
6D
5D
PDIP-7 For AP3983E
Applications
Adapters
Set Top Boxes
Auxiliary Supplies
Appliances
LED Driver
Features
Primary Side Control for Eliminating Opto-coupler
Valley Switching Turn on for Higher Efficiency and Better EMI
Performance
Better Transient Characteristics
Built-in N Channel MOSFET with 700 BVDSS
Low Start-up Current: 0.2A (Typ.)
Internal Output Cable Voltage Drop Compensation
Hiccup Function to Improve Short Circuit Protection
Better Over Voltage Protection
Better Over Temperature Protection
Low Total Cost Solution
Output Power Range (Note 1)
AP3983E for 20W Adapter and 25W in Open Frame Design
Totally Lead-free & Fully RoHS Compliant (Note 2 & 3)
Halogen and Antimony Free. GreenDevice (Note 4)
Note:
1. Typical continuous power in a non-ventilated enclosed adapter measured at +50°C ambient.
2. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
3. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
4. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
AP3983E
Document number: DS38875 Rev. 3 - 2
1 of 10
www.diodes.com
June 2016
© Diodes Incorporated







No Preview Available !

AP3983E Даташит, Описание, Даташиты
AP3983E
Typical Applications Circuit
F1
J1
AC 90-264V
L1
D1 to D4
C1 +
C2 +
C5
R1
R4
R3
Np
R2 R7
D5
C6 R8
C7 C8 R9
Vo+
++
D7,D8
Ns
L2
Vo-
+
C3
D6
T1
Nfb
U1 3
VCC D 5,6
C4 1 CPC GND 7
R6
CS FB 2
4
R12 R13
C9 R5
CY1
Item
C1, C2
C3
C4
C5
C6
C7, C8
C9
CY1
D1 to D6
D7, D8
F1
L1
L2
For AP3983E (12V/1.5A)
Function
15µF/400V, electrolytic
4.7µF/50V, electrolytic
10nF, ceramic, 0805
1nF/250V, ceramic
1nF/100V, 0805
1000µF/16V, electrolytic
10pF/16V, 0805
1nF/250VAC, Y1 capacitor
1N4007, rectifier diode
MBR3100, Schottky diode
2A/250V, fuse
30mH, Common inductor, EE9.8
250µH/2A, Common inductor
QTY
2
1
1
1
1
2
1
1
6
2
1
1
1
Item
U1
R1, R2
R3
R4
R5
R6
R7
R8
R9
R12
R13
T1
Function
AP3983E, PDIP-7
2M, 1206
200, 1206
150k, 1206
22k, 1%, 0805
47k, 1%, 0805
2, 1206
30, 1206
5.1k,1206
1.2, 1%, 1206
1.8, 1%, 1206
EE20 core, PC40, transformer
QTY
1
2
1
1
1
1
1
1
1
1
1
1
AP3983E
Document number: DS38875 Rev. 3 - 2
2 of 10
www.diodes.com
June 2016
© Diodes Incorporated







No Preview Available !

AP3983E Даташит, Описание, Даташиты
AP3983E
Pin Descriptions
Pin Number
1
2
3
4
5, 6
7
Pin Name
CPC
FB
VCC
CS
D
GND
Function
This pin connects a capacitor to GND for output cable compensation
The voltage feedback from auxiliary winding
This pin receives rectified voltage from the auxiliary winding of the transformer
Current sense for primary side of transformer
This pin is connected with an internal power MOSFET’s drain
This pin is the signal reference ground
Functional Block Diagram
CS
OVP/SCP/OTP/
OCkP/Max tONP
0.05V
2
FB
COMP
PFM
UV/OV
tONS
Detector
tONS
tOFF
OSC
tOSC
Timer
Detect
Pulse
512*tOSC
Pro
UV/OV
Detect_On
VCC
3
Regulator
&
Bias
UVLO
7
GND
PFM
VFB_REF
EA
Constant Voltage
Control
Bang_bang
R
S
Q
CV_ctrl
VALLEY
_ON
Driver
Line
VLINE
Compensation
Vcs_X
VLOAD
CS
Vcs_X select
UV Detect_on
VCS_REF
Peak
Current
Control
& LEB
Shutdown
CC_ctrl
5, 6
D
tONS Constant Current
Control
VLOAD
RQ
S
Low Pass Filter
VCPC
Cable
Compensation
Vcs_X
1
VLOAD
CPC
AP3983E
Document number: DS38875 Rev. 3 - 2
3 of 10
www.diodes.com
Bang_bang Bang_bang
Detector
4
CS
June 2016
© Diodes Incorporated










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