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Número de pieza | AP3127H | |
Descripción | GREEN MODE PWM CONTROLLER | |
Fabricantes | Diodes | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de AP3127H (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
No Preview Available ! AP3127/H
GREEN MODE PWM CONTROLLER
Description
Pin Assignments
The AP3127/H is a current mode PWM controller which is optimized
for high performance, low standby power and cost effective offline
flyback converters. The AP3127/H coordinating with Diodes’
secondary side controller AP4320 and protocol decoding IC AP4370
provide a Flyback charger/adapter solution compatible to Qualcomm
Quick Charge 2.0 protocol.
The PWM switching frequency at normal operation is internally fixed
(about 65kHz for AP3127 and 100kHz for AP3127H). 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 pins’ fault protection.
AP3127/H combines secondary side OVP (SOVP) and UVP.
(Top View)
Pin 1 Mark
GND 1
FB 2
SOVP/UVP 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
FB/Opto-coupler Open/Short
Comprehensive System Protection Feature:
VCC Over Voltage Protection (VOVP)
Over Load Protection (OLP)
Secondary Side OVP (SOVP) and UVP
Mini Size Package of SOT26
Totally Lead-free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Applications
Quick Charger
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.
AP3127/H
Document number: DS37920 Rev. 2 - 2
1 of 13
www.diodes.com
September 2015
© Diodes Incorporated
1 page 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
PWM Section/Oscillator Section
– Maximum Duty Cycle
– Oscillation Frequency
– 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
–
–
Output Section (GATE Pin)
–
Green Mode Threshold
Input Voltage for Zero
Duty
Output Low Level
– Output High Level
– Output Clamping Voltage
– Rising Time
– Falling Time
Conditions
–
VFB=0V, CL=1nF
VFB=3V, CL=0nF
–
–
–
–
–
AP3127,Central Frequency
AP3127H,Central Frequency
–
-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
8.1
7.1
29
70
60
93
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
8.6
7.6
30
75
65
100
–
–
–
±6
0.95
1.7
250
100
5
3
15
-0.27
2.3
1.55
–
–
13
220
50
AP3127/H
Max
5
1
2.0
16.5
9.1
8
31
Unit
μA
mA
V
V
V
V
80 %
70 kHz
107 kHz
30 kHz
5 %
3 %
±8 %
0.98
1.9
350
–
8
V
V
ns
ns
ms
3.5
18
-0.34
–
1.8
V/V
kΩ
mA
V
V
1V
–V
15 V
320 ns
100 ns
AP3127/H
Document number: DS37920 Rev. 2 - 2
5 of 13
www.diodes.com
September 2015
© Diodes Incorporated
5 Page Package Outline Dimensions (All dimensions in mm(inch).)
(1) Package Type: SOT26
AP3127/H
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
AP3127/H
Document number: DS37920 Rev. 2 - 2
11 of 13
www.diodes.com
September 2015
© Diodes Incorporated
11 Page |
Páginas | Total 13 Páginas | |
PDF Descargar | [ Datasheet AP3127H.PDF ] |
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