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AP3983C Datasheet Download - Diodes

Номер произв AP3983C
Описание HIGH FREQUENCY PRIMARY SIDE POWER SWITCHER
Производители Diodes
логотип Diodes логотип 



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AP3983C Даташит, Описание, Даташиты
AP3983B/C/D
HIGH FREQUENCY PRIMARY SIDE POWER SWITCHER FOR OFF-LINE SMPS
Description
Pin Assignments
The AP3983B/C/D are series of high frequency power switcher for
power supplies with better conversion efficiency, better voltage &
current accuracy, and improved protection functions. Typical
applications include charger, adapter for ADSL, home appliance
power supply, LED lighting power supply and PC auxiliary power
supplies. The AP3983B/C/D 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 AP3983B/C/D has good transient characteristics. Typically,
minimal voltage of 4.3V at PCB side can be achieved for dynamic test
of 5V application system.
The AP3983B/C/D provides operating frequency dithering function to
improve EMC performance of power supply. The AP3983B/C/D also
has built-in fixed cable voltage drop compensation and adjustable line
voltage compensation.
The AP3983B/C/D solution has fewer component number, smaller
size, and lower total cost.
The AP3983B/C is packaged in SO-7. The AP3983C/D is packaged in
PDIP-7.
(Top View)
CPC 1
FB 2
VCC 3
CS 4
7 GND
6D
5D
SO-7 For AP3983B/C
(Top View)
CPC 1
FB 2
VCC 3
CS 4
7 GND
6D
5D
PDIP-7 For AP3983C/D
Features
Primary Side Control for Eliminating Opto-coupler
Better Transient Characteristics
Built-in N Channel MOSFET with 650 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):
AP3983B for 6W Adapter
AP3983C (SO-7) for 7.5W
AP3983C (PDIP-7) for 10W Adapter
AP3983D for 18W Adapter
Totally Lead-Free & Fully RoHS Compliant (Notes 2 & 3)
Halogen and Antimony Free. GreenDevice (Note 4)
Applications
Adapters
Set Top Boxes
Auxiliary Supplies
Appliances
LED Driver
Notes:
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.
AP3983B/C/D
Document number: DS36784 Rev. 4 - 2
1 of 13
www.diodes.com
July 2016
© Diodes Incorporated







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AP3983C Даташит, Описание, Даташиты
AP3983B/C/D
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 AP3983B/C/D (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
AP3983D, 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
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
AP3983B/C/D
Document number: DS36784 Rev. 4 - 2
2 of 13
www.diodes.com
July 2016
© Diodes Incorporated







No Preview Available !

AP3983C Даташит, Описание, Даташиты
AP3983B/C/D
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
Low Pass Filter
VCPC
Cable
Compensation
Vcs_X
1
CPC
RQ
S
VLOAD
Bang_bang Bang_bang
Detector
4
CS
AP3983B/C/D
Document number: DS36784 Rev. 4 - 2
3 of 13
www.diodes.com
July 2016
© Diodes Incorporated










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