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PDF AP3983E Data sheet ( Hoja de datos )
| Número de pieza | AP3983E | |
| Descripción | HIGH FREQUENCY PRIMARY SIDE POWER SWITCHER | |
| Fabricantes | Diodes | |
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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. “Green” Device (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
1 page  
AP3983E
Electrical Characteristics (@VCC = 15V, TJ = +25°C, unless otherwise specified.)
Symbol
Parameter
Condition
STARTUP AND UVLO SECTION
VTH_ST
Turn-on Voltage
VOPR(MIN)
Turn-off Voltage
–
–
STANDBY CURRENT SECTION
IST Turn-on Current
ICC_OPR
Operating Current
VCC = VTH_ST-1V before
startup
Static current @ no load
OPERATING FREQUENCY SECTION (5% LOAD TO FULL LOAD)
fS(MAX)
Operating Frequency in Full Load
Condition
–
Δf/f Frequency Dithering
5% to 100% of full load
range
OPERATING FREQUENCY SECTION (NO LOAD TO 5% OF IOUT(MAX))
fS(MIN)
Output Voltage Detection Frequency
–
CURRENT SENSE SECTION
VCS_H
Peak Current Sense Voltage in Heavy
Load
ΔVCS/VCS
VCS Modulation for Frequency Dithering
tMOD
VCS Modulation Period
RLINE
Built-in Line Compensation Resistor
30% to 100% of full load
–
–
–
tLEB Leading Edge Blanking
@ VCS_H and VCS_M
@ VCS_EL
CONSTANT VOLTAGE SECTION
VFB
Equivalent Feedback Voltage @ Light
Load
RFB FB Pin Input Resistance
Closed loop test of VOUT
–
VCABLE/VOUT Cable Compensation Ratio
(VFB@FULLLOAD-VFB)/VFB
CONSTANT CURRENT SECTION
tONS/tSW
Secondary Winding Conduction Duty
POWER MOSFET SECTION
BVDSS
Drain-Source Breakdown Voltage
RDS(ON)
On State Resistor
VFB = 2V
–
–
PROTECTION FUNCTION SECTION
VFB(OVP)
Over Voltage Protection
VFB(SCP)
Short Circuit Protection
TOTP
Shutdown Temperature
THYS
Temperature Hysteresis
–
VFB @ Hiccup
–
–
Min
13
6
0
350
–
4
1.8
828
–
–
200
410
220
3.89
560
5.65
–
700
–
–
1.4
+125
–
Typ
15.5
6.8
0.2
500
65
7
2
900
2.5
250
230
500
250
3.95
700
6.00
4/8
–
–
7.5
1.5
+160
+40
Max
18
7.6
0.6
650
80
10
2.2
972
–
–
260
575
288
4.01
840
6.40
–
–
1.4
–
1.6
–
–
Unit
V
V
μA
kHz
%
kHz
mV
%
μs
Ω
ns
ns
V
k
%
–
V
V
V
°C
°C
AP3983E
Document number: DS38875 Rev. 3 - 2
5 of 10
www.diodes.com
June 2016
© Diodes Incorporated
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet AP3983E.PDF ] | |
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