FAN302HL — mWSaver™ PWM Controller for Low Standby Power Battery-Charger Applications
September 2011
FAN302HL
mWSaver™ PWM Controller for Low Standby Power
Battery-Charger Applications
Features
mWSaver™ Technology Provides Industry’s Best-
in-Class Standby Power
-
Achieve Under 10mW; Far Below Energy Star’s
5-Star Level (<30mW)
-
Proprietary 500V High-Voltage JFET Startup
Reduces Startup Resistor Loss
-
Low Operation Current in Burst Mode:
Maximum 350µA
Constant-Current (CC) Control without Secondary-
Feedback Circuitry
Fixed PWM Frequency at 85kHz with Frequency
Hopping to Solve EMI Problem
Low Operating Current: 3.5mA
Peak-Current-Mode Control in CV Regulation
Cycle-by-Cycle Current Limiting
V
DD
Over-Voltage Protection (Auto-Restart)
V
S
Over-Voltage Protection (Latch Mode)
V
DD
Under-Voltage Lockout (UVLO)
Gate Output Maximum Voltage Clamped at 15V
Fixed Over-Temperature Protection (Latch Mode)
Available in an 8-Lead SOIC Package
5%
Description
This highly integrated PWM controller, FAN302HL,
provides several features to enhance the performance
of general flyback converters. The constant-current-
control, proprietary topology enables simplified circuit
designs without secondary feedback circuitry for battery-
charger applications.
A proprietary Burst-Mode function with low operation
current minimizes standby power consumption.
The FAN302HL controller also provides several
protections. Cycle-by-cycle current limiting ensures the
fixed peak current limit level, even if a short circuit
occurs. The gate output is clamped at 15V to protect the
power MOS from high gate-source voltage conditions. If
either V
S
OVP or internal OTP is triggered, the circuit
enters Latch Mode until AC power is removed.
Using FAN302HL, a charger can be implemented with
few external components and minimized cost, compared
to a conventional design or a linear transformer. A
typical output CV/CC characteristic is shown in Figure 1.
V
O
Maximum
Typical
Minimum
Applications
Battery chargers for cellular phones, cordless phones,
PDA, digital cameras, and power tools. Replaces linear
transformers and RCC SMPS.
10%
Io
Figure 1. Typical Output V-I Characteristic
Ordering Information
Part Number
FAN302HLMY
Operating
Temperature Range
-40C to +105C
Package
8-Lead, Small Outline Package (SOIC),
JEDEC MS-012, .150-Inch Narrow Body
Packing Method
Tape & Reel
© 2010 Fairchild Semiconductor Corporation
FAN302HL • Rev. 1.0.1
www.fairchildsemi.com
FAN302HL — mWSaver™ PWM Controller for Low Standby Power Battery-Charger Applications
Application Diagram
Figure 2. Typical Application
Internal Block Diagram
Figure 3. Functional Block Diagram
© 2010 Fairchild Semiconductor Corporation
FAN302HL • Rev. 1.0.1
www.fairchildsemi.com
2
FAN302HL — mWSaver™ PWM Controller for Low Standby Power Battery-Charger Applications
Marking Information
F-
Fairchild Logo
Z: Assembly Plant Code
X: Year Code
Y: Week Code
TT: Die Run Code
T: M=SOP
P: Y= Green Package
M: Manufacture Flow Code
Figure 4.Top Mark
Pin Configuration
CS
GATE
VDD
VS
HV
NC
FB
GND
Figure 5. Pin Assignments
Pin Definitions
Pin #
1
2
3
4
5
6
7
8
Name
CS
GATE
VDD
VS
GND
FB
NC
HV
Description
Current Sense.
This pin connects a current-sense resistor to detect the MOSFET current for
Peak-Current-Mode control in CV regulation and provides the output-current regulation in CC
regulation.
PWM Signal Output.
This pin uses the internal totem-pole output driver to drive the power
MOSFET. It is internally clamped below 15V.
Power Supply.
IC operating current and MOSFET driving current are supplied using this pin.
This pin is connected to an external V
DD
capacitor. The threshold voltages for startup and turn-
off are 16V and 5V, respectively.
Voltage Sense.
This pin detects the output voltage information and discharge time based on
voltage of auxiliary winding.
Ground
Feedback.
The FB pin provides feedback information to the internal PWM comparator. This
feedback is used to control the duty cycle in CV regulation.
No Connect
High Voltage.
This pin connects to bulk capacitor for high-voltage startup.
© 2010 Fairchild Semiconductor Corporation
FAN302HL • Rev. 1.0.1
www.fairchildsemi.com
3
FAN302HL — mWSaver™ PWM Controller for Low Standby Power Battery-Charger Applications
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.
Symbol
V
HV
V
VDD
V
VS
V
CS
V
FB
P
D
θ
JA
θ
JC
T
J
T
STG
T
L
HV Pin Input Voltage
DC Supply Voltage
(1,2)
VS Pin Input Voltage
CS Pin Input Voltage
FB Pin Input Voltage
Parameter
Min.
Max.
500
30
Unit
V
V
V
V
V
mW
C/W
C/W
C
C
C
-0.3
-0.3
-0.3
7.0
7.0
7.0
660
150
39
Power Dissipation (T
A
=25C)
Thermal Resistance (Junction-to-Air)
Thermal Resistance (Junction-to-Case)
Operating Junction Temperature
Storage Temperature Range
Lead Temperature, (Wave soldering or IR, 10 Seconds)
Electrostatic
Discharge
Capability
Human Body Model, JEDEC:JESD22_A114
(Except HV Pin)
(3)
Charged Device Model, JEDEC:JESD22_C101
(Except HV Pin)
(3)
-40
-55
+150
+150
+260
5.0
ESD
kV
1.5
Notes:
1. All voltage values, except differential voltages, are given with respect to GND pin.
2. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device.
3. ESD ratings including HV pin: HBM=400V, CDM=750V.
© 2010 Fairchild Semiconductor Corporation
FAN302HL • Rev. 1.0.1
www.fairchildsemi.com
4
FAN302HL — mWSaver™ PWM Controller for Low Standby Power Battery-Charger Applications
Electrical Characteristics
V
DD
=15V and T
A
=25C unless noted.
Symbol
HV Section
V
HV-MIN
I
HV
I
HV-LC
Parameter
Minimum Startup Voltage on HV Pin
Supply Current Drawn from HV Pin
Leakage Current Drawn from HV Pin
Conditions
Min. Typ. Max. Unit
50
V
mA
μA
V
AC
=90V, V
DD
=0V, Controller Off
With Auxiliary Supply, V
HV
=500V,
V
DD
=15V, Controller On
0.8
1.5
0.8
5.0
3.0
V
DD
Section
V
OP
V
DD-ON
V
DD-OFF
V
DD-LH
I
DD-ST
I
DD-OP
V
DD-OVP
t
D-VDDOVP
Continuously Operation Voltage
Turn-On Threshold Voltage
Turn-Off Threshold Voltage
Threshold Voltage for Latch-Off Release
Startup Current
Operating Supply Current
V
DD
Over-Voltage Protection Level
V
DD
Over-Voltage Protection Debounce
Time
Center Frequency
Hopping Range
V
DD
=V
DD-ON
– 0.16V
V
DD
=18V, f=f
OSC
, C
L
=1nF
V
DD
=8V, C
L
=1nF
Auto-Restart
f=85kHz
15
4.7
16
5.0
2.50
400
3.5
200
25.5 26.5
100
450
4.0
350
27.5
180
25
17
5.3
V
V
V
V
μA
mA
μA
V
μs
I
DD-BURST
Burst-Mode Operating Supply Current
Oscillator Section
f
OSC
t
FHR
f
OSC-CM-MIN
Frequency
V
CS
=5V, V
S
=2.5, V
FB
=5V
82
85
±3
2.84
88
kHz
ms
Frequency Hopping Period
Minimum Frequency if CCM (Continuous
Current Mode)
Minimum Frequency in CC Regulation
(Constant Current Regulation)
FB Input to Current Comparator Attenuation
Input Impedance
FB Pin Open
1.7
V
CS
=5V, V
S
=0V
V
CS
=5V, V
S
=0V
1.2
1.3
Green Mode Ending Voltage
Enter Zero Duty Cycle of FB Voltage
Leave Zero Duty Cycle of FB Voltage
Threshold Temperature for Over-
Temperature Protection
V
CS
=5V, V
S
=0V
13
23
18
26
23
29
kHz
kHz
f
OSC-CCM
Feedback Input Section
A
V
Z
FB
V
FB-G
V
FB-L
V
FB-H
1/3.5 1/3.0 1/2.5
38
42
5.3
1.8
1.4
1.5
1.9
1.6
1.7
44
V/V
kΩ
V
V
V
V
V
FB-OPEN
Output High Voltage
Over-Temperature Protection Section
T
OTP
+130 +140 +150
C
Continued on the following page…
© 2010 Fairchild Semiconductor Corporation
FAN302HL • Rev. 1.0.1
www.fairchildsemi.com
5
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