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PDF AP3125R Data sheet ( Hoja de datos )

Número de pieza AP3125R
Descripción GREEN MODE PWM CONTROLLER
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No Preview Available ! AP3125R Hoja de datos, Descripción, Manual

Description
A Product Line of
Diodes Incorporated
AP3125A/V/L/R
GREEN MODE PWM CONTROLLER
Pin Assignments
The AP3125A/V/L/R is a current mode PWM controller which is
optimized for high performance, low standby power and cost effective
offline flyback converters.
The PWM switching frequency at normal operation is internally fixed
(about 65kHz). In middle load, the IC will enter green mode to
improve system efficiency with the help of frequency foldback. A
minimum switching frequency (about 20kHz) is set to avoid the
audible noise. In no load or light load, the IC will enter the burst mode
to minimize standby power. Furthermore, the frequency dithering
function is built-in to reduce EMI emission.
Internal slope compensation allows more stable Peak-Current Mode
control over wide range of input voltage and load conditions. Internal
line compensation ensures constant output power limit over entire
universal line voltage range.
Comprehensive protection features are included, such as cycle-by-
cycle current limit (OCP), VCC Over Voltage Protection (VOVP),
internal OTP, Over Load Protection (OLP) and pinsfault protection.
The versatile latch functions can be implemented using a minimal
number of external components.
(Top View)
Pin 1 Mark
GND 1
FB 2
CTRL 3
6 GATE
5 VCC
4 SENSE
SOT26
Features
Very Low Start-up Current
Current Mode Control
Non-audible-noise Green-mode Control
Internal Slope Compensation
Soft Start During Startup Process
Frequency Fold Back for High Average Efficiency
Secondary Winding Short Protection with FOCP
Soft Switching for Reducing EMI
VCC Maintain Mode
Useful Pin Fault Protection:
SENSE Pin Floating
CTRL Pin Short to Ground
FB/Opto-coupler Open/Short
Comprehensive System Protection Feature:
VCC Over Voltage Protection (VOVP)
Over Load Protection (OLP)
Optional Latch Mode for VOVP, OLP and CTRL Pin Protection
Mini Size Package of SOT26
Pin to Pin Compatible with AP3105NA/NV/NL/NR
Totally Lead-free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. GreenDevice (Note 3)
Applications
Switching AC-DC Adapter/Charger
ATX/BTX Auxiliary Power
Set-top Box (STB) Power Supply
Open Frame Switching Power Supply
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. 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.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
AP3125A/V/L/R
Document number: DS36660 Rev. 2 - 2
1 of 13
www.diodes.com
July 2014
© Diodes Incorporated

1 page




AP3125R pdf
A Product Line of
Diodes Incorporated
AP3125A/V/L/R
Electrical Characteristics (@TA = +25°C, VCC = 16V, unless otherwise specified.)
Symbol
Supply Voltage (VCC Pin)
ISTARTUP
Parameter
Startup Current
ICC Operating Supply Current
UVLO (on)
VCC Maintain
UVLO (off)
VCC OVP
VCC Clamp
PWM Section/Oscillator Section
Maximum Duty Cycle
Oscillation Frequency
Green Mode Frequency
Frequency Temperature
Stability
Frequency Voltage Stability
Frequency Dithering
Current Sense Section (SENSE Pin)
VCS Maximum SENSE Voltage
FOCP Voltage
LEB Time of SENSE
Delay to Output (Note 5)
Soft-start Time
Feedback Input Section (FB Pin)
The Ratio of Input Voltage to
Current Sense Voltage
Input Impedance
Source Current
Green Mode Threshold
Input Voltage for Zero Duty
Output Section (GATE Pin)
Output Low Level
Output High Level
Output Clamping Voltage
Rising Time (Note 5)
Falling Time (Note 5)
Conditions
VFB=0V, CL=1nF
VFB=3V, CL=0nF
ICC=5mA
-20°C to 125°C (Note 5)
VCC=12V to 30V
VFB=4.5V
VFB=0V
IO=20mA, VCC=12V
IO=20mA, VCC=12V
CL=1nF, VCC=13V
CL=1nF, VCC=13V
Min
0.5
0.6
14.5
8.6
7.1
27
31
70
60
20
±4
0.9
1.5
150
3
2.5
12
-0.2
1.3
8
11
Typ
1
0.7
1.2
15.8
9.1
7.6
28.5
34
75
65
±6
0.95
1.7
250
100
5
3
15
-0.27
2.1
1.55
13
150
50
Max
10
1
2.0
16.5
9.6
8.1
30
80
70
30
5
3
±8
1
1.9
350
8
3.5
18
-0.34
1.8
1
15
250
100
Unit
μA
mA
V
V
V
V
V
%
kHz
kHz
%
%
%
V
V
ns
ns
ms
V/V
mA
V
V
V
V
V
ns
ns
AP3125A/V/L/R
Document number: DS36660 Rev. 2 - 2
5 of 13
www.diodes.com
July 2014
© Diodes Incorporated

5 Page





AP3125R arduino
Package Outline Dimensions (All dimensions in mm(inch).)
(1) Package Type: SOT26
A Product Line of
Diodes Incorporated
AP3125A/V/L/R
2.820(0.111)
3.100(0.122)
0.300(0.012)
0.500(0.020)
6 54
0.300(0.012)
0.600(0.024)
0°
8°
0.200(0.008)
Pin 1 Mark
12
3
0.950(0.037)TYP
1.800(0.071)
2.000(0.079)
0.700(0.028)REF
0.000(0.000)
0.150(0.006)
0.100(0.004)
0.200(0.008)
0.900(0.035) 1.450(0.057)
1.300(0.051)
MAX
AP3125A/V/L/R
Document number: DS36660 Rev. 2 - 2
11 of 13
www.diodes.com
July 2014
© Diodes Incorporated

11 Page







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