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Rectification Controller. FAN6204A Datasheet

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Rectification Controller. FAN6204A Datasheet
















FAN6204A Controller. Datasheet pdf. Equivalent













Part

FAN6204A

Description

Synchronous Rectification Controller



Feature


.
Manufacture

ON Semiconductor

Datasheet
Download FAN6204A Datasheet


ON Semiconductor FAN6204A

FAN6204A; .


ON Semiconductor FAN6204A

.


ON Semiconductor FAN6204A

.




Part

FAN6204A

Description

Synchronous Rectification Controller



Feature


.
Manufacture

ON Semiconductor

Datasheet
Download FAN6204A Datasheet




 FAN6204A
MWSAVER) Synchronous
Rectification Controller for
Flyback and Forward
Freewheeling Rectification
FAN6204A
Description
FAN6204A is a secondaryside synchronous rectification (SR)
controller to drive SR MOSFET for improving efficiency. The IC is
suitable for flyback converters and forward freewheeling
rectification.
FAN6204A can be applied in continuous or discontinuous
conduction mode (CCM and DCM) and quasiresonant (QR) flyback
converters based on the proprietary innovative linearpredict
timingcontrol technique. The benefits of this technique include a
simple control method without currentsense circuitry to accomplish
noise immunity.
With PWM frequency tracking and secondaryside winding voltage
detection, FAN6204A can operate in both fixedand
variablefrequency systems.
In Green Mode, the SR controller stops all SR switching operation
to reduce the operating current. Power consumption is maintained at
minimum level in lightload condition.
Features
MWSAVER Technology:
Internal Green Mode to Stop SR Switching for Lower NoLoad
Power Consumption
1.1 mA UltraLow Green Mode Operating Current
SR Controller
Suited for Flyback Converter in QR, DCM, and CCM Operation
Suited for Forward Freewheeling Rectification
PWM Frequency Tracking with SecondarySide Winding Voltage
Detection
UltraLow VDD Operating Voltage for Various Output Voltage
Applications (5 V~24 V)
VDD Pin OverVoltage Protection (OVP)
12 V (Typical) Gate Driver Clamp
8Pin SOP Package
This is a PbFree Device
Applications
AC/DC NB Adapters
OpenFrame SMPS
Battery Charger
www.onsemi.com
SOIC8
CASE 751EB
MARKING DIAGRAM
ON ZXYTT
6204
AME
Z
= Plant Code
X
= Year Code
Y
= Week Code
TT
= Die Run Code
6204AME = Specific Device Code
ORDERING INFORMATION
See detailed ordering and shipping information on page 11 of
this data sheet.
© Semiconductor Components Industries, LLC, 2015
1
January, 2020 Rev. 2
Publication Order Number:
FAN6204A/D




 FAN6204A
FAN6204A
APPLICATION DIAGRAMS
VIN
I SR
V
VIN
Q1
Q2
VDET
Q1
R1
GATE VDD
3
5
R3
VLPC
LPC
RES
8 FAN6204A 7
VRES
Q2
R2
4
6
R4
GND
AGND
VOUT
Q2
GATE VDD
R3
R1
3
5
LPC
RES
8 FAN6204A 7
R2
4
6
R4
GND AGND
Figure 1. Typical Application Circuit for Flyback
Converter
Figure 2. Typical Application Circuit for Forward
Freewheeling Rectification
INTERNAL BLOCK DIAGRAM
VDD 5
LPC 8
950 kW
0.05 VDD
+
50 kW
Calculate VLPCEN
VLPCEN
2V
4.8 V / 4.5 V
+
27.5 V / 25.4 V
OVP
Green
Mode
t DIS
Rising
Edge
1 ms
+
Blanking
0.05 VDD +
SQ
RQ
PWM Block
Frequency
Tracking
Detector
Enable
iCHR
VCT
iDISCHR
RESET
t SRMAX
5 mA/V
CT
Causal
Function
RESET
1 mA/V
Figure 3. Functional Block Diagram
Internal
Bias
GATE
3
Drive
7
RES
4
GND
1 AGND
2 AGND
6 AGND
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 FAN6204A
PIN CONFIGURATION
FAN6204A
LPC
RES
AGND VDD
8
7
6
5
1
AGND
2
AGND
3
GATE
4
GND
Figure 4. Pin Assignments
PIN DESCRIPTION
Pin No.
Name
1
AGND
2
AGND
3
GATE
4
GND
5
VDD
6
AGND
7
RES
LPC
8
Description
Signal Ground.
Signal Ground.
Driver Output. The totempole output driver for driving the power MOSFET.
Ground. MOSFET source connection.
Power Supply. The threshold voltages for startup and turnoff are 4.8 V and 4.5 V, respectively.
Signal Ground.
Reset Control of Linear Predict. The RES pin is used to detect the output voltage level through a voltage
divider. An internal current source, IDISCHR, is modulated by the voltage level on the RES pin.
Winding Detection. This pin is used to detect the voltage on the winding during the ontime period of the
primary GATE.
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Min
Max
Unit
VDD
VL
PD
QJA
QJC
TSTG
TJ
TL
ESD
DC Supply Voltage
LPC, RES
Power Dissipation (TA = 25°C)
Thermal Resistance (JunctiontoAir)
Thermal Resistance (JunctiontoCase)
Storage Temperature Range
Junction Temperature
Lead Temperature (Soldering 10 Seconds)
Human Body Model
30
V
0.3
7.0
V
0.8
W
151
°C/W
58
°C/W
55
+150
°C
40
+150
°C
+260
°C
5
kV
Charged Device Model
2
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
1. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device.
2. All voltage values, except differential voltages, are given with respect to GND pin.
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