Harman Kardon MAS 101-102-111 (serv.man2) Service Manual ▷ View online
www.fairchildsemi.com
FAN7602 Rev. 1.0.1
F
AN7602 Green Curren
t Mode PWM Controller
Pin Assignments
Figure 3. Pin Configuration (Top View)
Pin Definitions
Pin Number
Pin Name
Pin Function Description
1
LUVP
Line Under Voltage Protection Pin. This pin is used to protect the set when the
input voltage is lower than the rated input voltage range.
input voltage is lower than the rated input voltage range.
2
Latch/Plimit
Latch Protection and Power Limit Pin. When the pin voltage exceeds 4V, the latch
protection works and the latch protection is reset when the Vcc voltage is lower than
5V. For the power limit function, the OCP level decreases as the pin voltage
increases.
protection works and the latch protection is reset when the Vcc voltage is lower than
5V. For the power limit function, the OCP level decreases as the pin voltage
increases.
3
CS/FB
Current Sense and Feedback Pin. This pin is used to sense the MOSFET current
for the current mode PWM and OCP. The output voltage feedback information and
the current sense information are added using external RC filter.
for the current mode PWM and OCP. The output voltage feedback information and
the current sense information are added using external RC filter.
4
GND
Ground Pin. This pin is used for the ground potential of all the pins. For proper oper-
ation, the signal ground and the power ground should be separated.
ation, the signal ground and the power ground should be separated.
5
OUT
Gate Drive Output Pin. This pin is an output pin to drive an external MOSFET. The
peak sourcing current is 450mA and the peak sinking current is 600mA. For proper
operation, the stray inductance in the gate driving path must be minimized.
peak sourcing current is 450mA and the peak sinking current is 600mA. For proper
operation, the stray inductance in the gate driving path must be minimized.
6
Vcc
Supply Voltage Pin. IC operating current and MOSFET driving current are supplied
using this pin.
using this pin.
7
NC
No Connection.
8
Vstr
Start-up Pin. This pin is used to supply IC operating current during IC start-up. After
start-up, the internal JFET is turned off to reduce power loss.
F A N 7 6 0 2
1
2
6
5
8
7
Y W W
3
4
Latch/
Plimit
GND
CS/FB
LUVP
Vstr
NC
Vcc
Out
15
April 2009
© 2007 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FSFR series • Rev.1.0.5
F
S
F
R
-Series — F
a
irch
ild
Po
Po
wer Switch
(F
PS
PS
™
) for
H
a
a
lf-B
ri
ri
dge R
esonant C
onver
ter
FSFR-Series —
Fairchild Power Switch (FPS™)
for Half-Bridge Resonant Converters
Features
Variable Frequency Control with 50% Duty Cycle
for Half-Bridge Resonant Converter Topology
for Half-Bridge Resonant Converter Topology
High Efficiency through Zero Voltage Switching (ZVS)
Internal SuperFET™s with Fast-Recovery Type
Body Diode (t
Body Diode (t
rr
=120ns) for FSFR2100 and UniFETs
with Fast-Recovery Type Body Diode (t
rr
<160ns) for
FSFR2100U/2000/1900/1800/1700.
Fixed Dead Time (350ns) Optimized for MOSFETs
Up to 300kHz Operating Frequency
Pulse Skipping for Frequency Limit (Programmable)
at Light-Load Condition
at Light-Load Condition
Remote On/Off Control Using Control Pin
Protection Functions: Over-Voltage Protection
(OVP), Over-Load Protection (OLP), Over-Current
Protection (OCP), Abnormal Over-Current Protection
(AOCP), Internal Thermal Shutdown (TSD)
(OVP), Over-Load Protection (OLP), Over-Current
Protection (OCP), Abnormal Over-Current Protection
(AOCP), Internal Thermal Shutdown (TSD)
Applications
PDP and LCD TVs
Desktop PCs and Servers
Adapters
Telecom Power Supplies
Audio Power Supplies
Description
The FSFR-series are a highly integrated power switches
designed for high-efficiency half-bridge resonant
converters. Offering everything necessary to build a
reliable and robust resonant converter, the FSFR-series
simplifies designs and improves productivity, while
improving performance. The FSFR-series combines
power MOSFETs with fast-recovery type body diodes, a
high-side gate-drive circuit, an accurate current
controlled oscillator, frequency limit circuit, soft-start, and
built-in protection functions. The high-side gate-drive
circuit has a common-mode noise cancellation
capability, which guarantees stable operation with
excellent noise immunity. The fast-recovery body diode
of the MOSFETs improves reliability against abnormal
operation conditions, while minimizing the effect of the
reverse recovery. Using the zero-voltage-switching (ZVS)
technique dramatically reduces the switching losses and
efficiency is significantly improved. The ZVS also
reduces the switching noise noticeably, which allows a
small-sized Electromagnetic Interference (EMI) filter.
designed for high-efficiency half-bridge resonant
converters. Offering everything necessary to build a
reliable and robust resonant converter, the FSFR-series
simplifies designs and improves productivity, while
improving performance. The FSFR-series combines
power MOSFETs with fast-recovery type body diodes, a
high-side gate-drive circuit, an accurate current
controlled oscillator, frequency limit circuit, soft-start, and
built-in protection functions. The high-side gate-drive
circuit has a common-mode noise cancellation
capability, which guarantees stable operation with
excellent noise immunity. The fast-recovery body diode
of the MOSFETs improves reliability against abnormal
operation conditions, while minimizing the effect of the
reverse recovery. Using the zero-voltage-switching (ZVS)
technique dramatically reduces the switching losses and
efficiency is significantly improved. The ZVS also
reduces the switching noise noticeably, which allows a
small-sized Electromagnetic Interference (EMI) filter.
The FSFR-series can be applied to various resonant
converter topologies such as series resonant, parallel
resonant, and LLC resonant converters.
converter topologies such as series resonant, parallel
resonant, and LLC resonant converters.
Related Resources
AN4151 — Half-bridge LLC Resonant Converter Design
using FSFR-series Fairchild Power Switch (FPS
using FSFR-series Fairchild Power Switch (FPS
TM
)
Ordering Information
Part
Number
Package
Eco
Status
Operating
Junction
Temperature
R
DS(ON_MAX)
Maximum Output Power
without Heatsink
(V
IN
=350~400V)
(1,2)
Maximum Output Power
with Heatsink
(V
IN
=350~400V)
(1,2)
FSFR2100
0.38
Ω
200W 450W
FSFR2100U
0.51
Ω
180W 400W
FSFR2000
0.67
Ω
160W 350W
FSFR1900
0.85
Ω
140W 300W
FSFR1800
0.95
Ω
120W 260W
FSFR1700
9-SIP
RoHS
-40 to +130°C
1.25
Ω
100W 200W
Notes:
1. The junction temperature can limit the maximum output power.
2. Maximum practical continuous power in an open-frame design at 50
1. The junction temperature can limit the maximum output power.
2. Maximum practical continuous power in an open-frame design at 50
°C ambient.
For Fairchild’s definition of Eco Status, please visit:
http://www.fairchildsemi.com/company/green/rohs_green.html
.
16
© 2007 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FSFR series • Rev.1.0.5
FSFR-
S
eries — Fairchild Power Swit
ch (
F
P
S
™
) for Ha
) for Ha
lf-Bri
dge
Resonant Converter
Application Circuit Diagram
R
sense
Control
IC
C
DL
V
CC
V
DL
LVcc
RT
CON
CS
SG
PG
V
CTR
HV
CC
Cr
L
lk
Lm
Ns
Vo
D1
D2
R
F
C
F
Np
Ns
KA431
V
IN
Figure 1. Typical Application Circuit (LLC Resonant Half-Bridge Converter)
Block Diagram
1.5 s
μ
Figure 2. Internal Block Diagram
17
© 2007 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FSFR series • Rev.1.0.5
FSFR-
S
eries — Fairchild Power Swit
ch (
F
P
S
™
) for Ha
) for Ha
lf-Bri
dge
Resonant Converter
Pin Configuration
1 2 3 4 5 6 7 8 9 10
V
DL
CON
R
T
CS
SG
PG
LVcc
HVcc
V
CTR
Figure 3. Package Diagram
Pin Definitions
Pin #
Name
Description
1 V
DL
This is the drain of the high-side MOSFET, typically connected to the input DC link voltage.
2 CON
This pin is for enable/disable and protection. When the voltage of this pin is above 0.6V, the
IC operation is enabled. When the voltage of this pin drops below 0.4V, gate drive signals
for both MOSFETs are disabled. When the voltage of this pin increases above 5V,
protection is triggered.
IC operation is enabled. When the voltage of this pin drops below 0.4V, gate drive signals
for both MOSFETs are disabled. When the voltage of this pin increases above 5V,
protection is triggered.
3 R
T
This pin programs the switching frequency. Typically, an opto-coupler is connected to
control the switching frequency for the output voltage regulation.
control the switching frequency for the output voltage regulation.
4 CS
This pin senses the current flowing through the low-side MOSFET. Typically, negative
voltage is applied on this pin.
voltage is applied on this pin.
5
SG
This pin is the control ground.
6
PG
This pin is the power ground. This pin is connected to the source of the low-side MOSFET.
7 LV
CC
This pin is the supply voltage of the control IC.
8 NC
No
connection.
9 HV
CC
This is the supply voltage of the high-side gate-drive circuit IC.
10 V
CTR
This is the drain of the low-side MOSFET. Typically, a transformer is connected to this pin.
18
Click on the first or last page to see other MAS 101-102-111 (serv.man2) service manuals if exist.