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Número de pieza | APR34309C | |
Descripción | SECONDARY SIDE SYNCHRONOUS RECTIFICATION SWITCHER | |
Fabricantes | Diodes | |
Logotipo | ||
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No Preview Available ! A Product Line of
Diodes Incorporated
APR34309C
SECONDARY SIDE SYNCHRONOUS RECTIFICATION SWITCHER
Description
APR34309C is a secondary side Combo IC, which combines an N-
Channel MOSFET and a driver circuit designed for synchronous
rectification (SR) in DCM operation. It also integrates output voltage
detect function for primary side control system.
The N-Channel MOSFET has been optimized for low gate charge,
low RDS(ON), fast switching speed and body diode reverse recovery
performance.
The synchronous rectification can effectively reduce the secondary
side rectifier power dissipation and provide high performance solution.
By sensing MOSFET drain-to-source voltage, APR34309C can output
ideal drive signal with less external components. It can provide high
performance solution for 5V output voltage application.
Same as AP4341, APR34309C detects the output voltage and
provides a periodical signal when the output voltage is lower than a
certain threshold. By fast response to secondary side voltage,
APR34309C can effectively improve the transient performance of
primary side control system.
The APR34309C is available in SO-8EP package.
Features
•
•
•
•
Synchronous Rectification for DCM Operation Flyback
Eliminate Resonant Ring Interference
Fast Detector of Supply Voltages
Fewest External Components
Totally Lead-free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Pin Assignments
(Top View)
DRISR 1
VDET 2
AREF 3
VCC 4
8 GND
7 GND
6 GND
5 DRAIN
Note: The DRAIN pin of internal MOSFET is exposed PAD, which is at the bottom
of IC (the dashed box). The secondary current should flow from GND(pin 6,7,8) to
this exposed PAD.
SO-8EP
Applications
• Adapters/Chargers for Cell/Cordless Phones, ADSL Modems, MP3
•
and Other Portable Apparatus
Standby and Auxiliary Power Supplies
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.
Typical Applications Circuit
C23 R21
C21 C22
++
APR34309C
R23
DRAINDRAIN GND
DRISR
GND
VDET
GND
CAREF
AREF
RAREF
VCC
R24
C24
APR34309C
Document number: DS37492 Rev. 5 - 2
1 of 13
www.diodes.com
June 2015
© Diodes Incorporated
1 page A Product Line of
Diodes Incorporated
APR34309C
Electrical Characteristics (@TA =+25°C, unless otherwise specified. Cont.)
MOSFET Static Characteristics
Parameters
Drain to Source Breakdown
Voltage
Gate Threshold Voltage
Zero Gate Voltage Drain
Current
Gate to Source Leakage
Current
Drain to Source On-state
Resistance
Symbol
VDSS(BR)
VGS(TH)
IDSS
IGSS
RDS(ON)
Conditions
VGS=0V, ID=0.25mA
VDS=VGS, ID=0.25mA
VDS=50V, VGS=0V
VGS=10V, VDS=0V
VGS=4.5V, ID=3A
Min Typ Max Unit
50 – 100 V
0.7 1.3
2
V
– – 1 µA
–
–
±100
nA
– 8 – mΩ
MOSFET Dynamic Characteristics
Parameters
Symbol
Conditions
Min Typ Max Unit
Input Capacitance
Ciss
– 1872 –
Output Capacitance
Coss
VGS=0V, VDS=25V, f=1MHz
–
506
–
pF
Reverse Transfer Capacitance
Crss
– 43 –
Gate to Source Charge
Gate to Drain Charge (Miller
Charger)
Total Gate Charge
Qgs VGS=0V to 10V, VDD=25V,
– 3.1
–
Qgd ID=15A
– 4.8 – nC
Qg VGS=4.5V
– 15 –
Gate Resistance
Rg –
– 1.8 –
Ω
APR34309C
Document number: DS37492 Rev. 5 - 2
5 of 13
www.diodes.com
June 2015
© Diodes Incorporated
5 Page Marking Information
(Top View)
A Product Line of
Diodes Incorporated
APR34309C
34309C
MP-G1
YWWAXX
-
First and Second Lines: Logo and Marking ID
Third Line: Date Code
Y: Year
WW: Work Week of Molding
A: Assembly House Code
XX: 7th and 8th Digits of Batch No.
Package Outline Dimensions (All dimensions in mm(inch).)
(1) Package Type: SO-8EP
3.800(0.150)
4.000(0.157)
2.110(0.083)
2.710(0.107)
1.270(0.050)
TYP
5.800(0.228)
6.200(0.244)
0.300(0.012)
0.510(0.020)
0.050(0.002)
0.150(0.006)
0°
8° 0.400(0.016)
1.270(0.050)
0.150(0.006)
0.250(0.010)
Note: Eject hole, oriented hole and mold mark is optional.
APR34309C
Document number: DS37492 Rev. 5 - 2
11 of 13
www.diodes.com
4.700(0.185)
5.100(0.201)
1.350(0.053)
1.550(0.061)
June 2015
© Diodes Incorporated
11 Page |
Páginas | Total 13 Páginas | |
PDF Descargar | [ Datasheet APR34309C.PDF ] |
Número de pieza | Descripción | Fabricantes |
APR34309C | SECONDARY SIDE SYNCHRONOUS RECTIFICATION SWITCHER | Diodes |
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