FAN4822IN_NL Fairchild Semiconductor, FAN4822IN_NL Datasheet

FAN4822IN_NL

Manufacturer Part Number
FAN4822IN_NL
Description
Manufacturer
Fairchild Semiconductor
Datasheet

Specifications of FAN4822IN_NL

Start-up Supply Current
700uA
Switching Freq
87kHz
Operating Supply Voltage (min)
12.8V
Operating Supply Voltage (typ)
13.5V
Operating Supply Voltage (max)
14.2V
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Package Type
PDIP W
Pin Count
14
Mounting
Through Hole
Lead Free Status / RoHS Status
Compliant
Features
• Average current sensing, continuous boost, leading edge
• Built-in ZVS switch control with fast response for high
• Average line voltage compensation with brownout control
• Current fed gain modulator improves noise immunity and
• Overvoltage comparator eliminates output “runaway” due
• UVLO, current limit, and soft-start
• Precision 1.3% reference
Block Diagram
FAN4822
ZVS Average Current PFC Controller
PFC for low total harmonic distortion and near unity
power factor
efficiency at high power levels
provides universal input operation
to load removal
14
13
4
5
3
6
7
2.5V
FB
I
V
I
R
REF
ZV SENSE
AC
SENSE
RMS
T
C
T
+
MODULATOR
VEAO
VEA
GAIN
1
R+
R–
V
REF
CCZ
8
GND
+
IEA
– –
+
2
OSC
IEAO
+
General Description
The FAN4822 is a PFC controller designed specifically for
high power applications. The controller contains all of the
functions necessary to implement an average current boost
PFC converter, along with a Zero Voltage Switch (ZVS) con-
troller to reduce diode recovery and MOSFET turn-on
losses.
The average current boost PFC circuit provides high power
factor (>98%) and low Total Harmonic Distortion (THD).
Built-in safety features include undervoltage lockout, over-
voltage protection, peak current limiting, and input voltage
brownout protection.
The ZVS control section drives an external ZVS MOSFET
which, combined with a diode and inductor, soft switches the
boost regulator. This technique reduces diode reverse recov-
ery and MOSFET switching losses to reduce EMI and maxi-
mize efficiency.
2.7V
–1V
FB
+
+
I LIMIT
OVP
S
R
S
R
S
R
www.fairchildsemi.com
Q
Q
Q
Q
Q
V
CCZ
REV. 1.0.1 8/10/01
13.5V
PWR GND
PFC OUT
ZVS OUT
V
CC
12
11
10
9

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FAN4822IN_NL Summary of contents

Page 1

FAN4822 ZVS Average Current PFC Controller Features • Average current sensing, continuous boost, leading edge PFC for low total harmonic distortion and near unity power factor • Built-in ZVS switch control with fast response for high efficiency at high power ...

Page 2

FAN4822 Pin Configuration FAN4822 14-Pin DIP (P14) VEAO 1 14 IEAO SENSE RMS SENSE 7 8 TOP VIEW Pin Description (Pin ...

Page 3

PRODUCT SPECIFICATION Operating Conditions Temperature Range FAN4822IX Electrical Characteristics Unless otherwise specified 52. Parameter Voltage Error Amplifier Input Voltage Range Transconductance V NON-INV Feedback Reference Voltage V EAO Open Loop Gain PSRR V CCZ Output ...

Page 4

FAN4822 Electrical Characteristics Unless otherwise specified 52. Parameter Gain Modulator Gain (Note 2) I IAC V I IAC V I IAC V I IAC V Bandwidth I IAC Output Voltage V 250 A Oscillator Initial ...

Page 5

PRODUCT SPECIFICATION Electrical Characteristics Unless otherwise specified 52. Parameter Supply Shunt Voltage ( CCZ Load Regulation 25mA < I Total Variation Load and temperature Start-up Current V Operating Current V Notes 1. ...

Page 6

FAN4822 Functional Description Switching losses of wide input voltage range PFC boost con- verters increase dramatically as power levels increase above 200 watts. The use of zero-voltage switching (ZVS) tech- niques improves the efficiency of high power PFCs by sig- ...

Page 7

PRODUCT SPECIFICATION Q1 Turn-On The turn-on event consists of the time it takes for the current through L2 to ramp to the L1 current plus the resonant event of L2 and the ZVS capacitor. The total event should occur in ...

Page 8

FAN4822 8 Figure 3. FAN4822 Schematic. PRODUCT SPECIFICATION REV. 1.0.1 8/10/01 ...

Page 9

PRODUCT SPECIFICATION Mechanical Dimensions 14 PIN 0.070 MIN (1.77 MIN) (4 PLACES) 0.170 MAX (4.32 MAX) 0.125 MIN (3.18 MIN) 0.400 - 0.414 (10.16 - 10.52) 16 PIN 0.024 - 0.034 0.050 BSC (0.61 ...

Page 10

... NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems ...

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