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부품번호 FAN6754A 기능
기능 Highly Integrated Green- Mode PWM Controller
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FAN6754A 데이터시트, 핀배열, 회로
April 2012
FAN6754A
Highly Integrated Green- Mode PWM Controller
Brownout and VLimit Adjustment by HV Pin
Features
High-Voltage Startup
AC Input Brownout Protection with Hysteresis
Monitor HV to Adjust VLimit
Low Operating Current: 1.5mA
Linearly Decreasing PWM Frequency to 22KHz
Frequency Hopping to Reduce EMI Emission
Fixed PWM Frequency: 65KHz
Peak-Current-Mode Control
Cycle-by-Cycle Current Limiting
Leading-Edge Blanking (LEB)
Internal Open-Loop Protection
GATE Output Maximum Voltage Clamp: 13V
VDD Under-Voltage Lockout (UVLO)
VDD Over-Voltage Protection (OVP)
Programmable Over-Temperature Protection (OTP)
Internal Latch Circuit (OVP, OTP)
Open-Loop Protection (OLP); Restart for MR, Latch
for ML
SENSE Short-Circuit Protection (SSCP)
Built-in 8ms Soft-Start Function
Applications
General-purpose switch-mode power supplies and
flyback power converters, including:
Power Adapters
Description
The highly integrated FAN6754A PWM controller
provides several features to enhance the performance
of flyback converters. To minimize standby power
consumption, a proprietary green-mode function
provides off-time modulation to continuously decrease
the switching frequency under light-load conditions.
Under zero-load and very light-load conditions,
FAN6754A saves PWM pulses by entering deep burst
mode. This burst mode function enables the power
supply to meet international power conservation
requirements.
FAN6754A integrates a frequency-hopping function
internally to reduce EMI emission of a power supply with
minimum line filters. Built-in synchronized slope
compensation is accomplished by proprietary HV
monitor to adjust VLimit for constant output power limit
over universal AC input range. The gate output is
clamped at 13V to protect the external MOSFET from
over-voltage damage.
Other protection functions include AC input brownout
protection with hysteresis, SENSE pin short-circuit
protection, and VDD over-voltage protection. For over-
temperature protection, an external NTC thermistor can
be applied to sense the external switcher’s temperature.
When VDD OVP or OTP are activated, an internal latch
circuit is used to latch-off the controller. The latch mode
is reset when the VDD supply is removed.
FAN6754A is available in an 8-pin SOP package.
Related Resources
Evaluation Board: FEBFAN6754AMR_CP450v1
Ordering Information
Part Number
FAN6754AMRMY
FAN6754AMLMY
Operating
Temperature Range
-40 to +105°C
Package
8-Pin, Small Outline Package (SOP)
Packing Method
Tape & Reel
© 2011 Fairchild Semiconductor Corporation
FAN6754A • Rev. 1.0.3
www.fairchildsemi.com




FAN6754A pdf, 반도체, 판매, 대치품
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
Parameter
Min.
Max.
Unit
VVDD
VFB
VSENSE
VRT
VHV
PD
DC Supply Voltage(1,2)
FB Pin Input Voltage
SENSE Pin Input Voltage
RT Pin Input Voltage
HV Pin Input Voltage
Power Dissipation (TA50°C)
30 V
-0.3 7.0
V
-0.3 7.0
V
-0.3 7.0
V
500 V
400 mW
ΘJA
TJ
TSTG
TL
ESD
Thermal Resistance (Junction-to-Air)
Operating Junction Temperature
Storage Temperature Range
Lead Temperature (Wave Soldering or IR, 10 Seconds)
Electrostatic Discharge Capability,
All Pins Except HV Pin
Human Body Model;
JESD22-A114
Charged Device Model;
JESD22-C101
-40
-55
150
+125
+150
+260
4500
1500
°C/W
°C
°C
°C
V
Notes:
1. All voltage values, except differential voltages, are given with respect to the network ground terminal.
2. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device.
3. ESD with HV pin: CDM=1000V and HBM=500V.
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to Absolute Maximum Ratings.
Symbol
Parameter
TA Operating Ambient Temperature
RHV HV Startup Resistor
Min.
-40
150
Typ.
200
Max.
+105
250
Unit
°C
kΩ
© 2011 Fairchild Semiconductor Corporation
FAN6754A • Rev. 1.0.3
4
www.fairchildsemi.com

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FAN6754A 전자부품, 판매, 대치품
Electrical Characteristics (Continued)
VDD=15V and TA=25°C unless otherwise noted.
Symbol
Parameter
Conditions
Oscillator Section
fOSC Frequency in Normal Mode
tHOP
fOSC-G
fDV
Hopping Period
Green-Mode Frequency
Frequency Variation vs. VDD Deviation
Center Frequency
Hopping Range
FB > VFB-N
FB=VFB-G
VDD=11V to 22V
fDT Frequency Variation vs. Temperature Deviation TA=-40 to +105°C
Feedback Input Section
AV
ZFB
VFB-OPEN
VFB-OLP
tD-OLP
Input Voltage to Current-Sense Attenuation
Input Impedance
Output High Voltage
FB Open-Loop Trigger Level
Delay Time of FB Pin Open-Loop Protection
VFB-N Green-Mode Entry FB Voltage
VFB-G Green-Mode Ending FB Voltage
VFB-ZDCR FB Threshold Voltage for Zero-Duty Recovery
VFB-ZDC FB Threshold Voltage for Zero-Duty
FB Pin Open
Pin, FB Voltage
(FB =VFB-N)
Hopping Range
Pin, FB Voltage
(FB =VFB-G)
Hopping Range
Min. Typ. Max. Units
61 65 69
KHz
±3.7 ±4.2 ±4.7
3.9 4.4 4.9 ms
10.2 11.5 12.8 ms
19 22 25 KHz
5%
5%
1/4.5
14
4.8
4.3
50
1/4.0
16
5.0
4.6
56
1/3.5
18
5.2
4.9
62
V/V
k
V
V
ms
2.6 2.8 3.0 V
±3.7 ±4.2 ±4.7 kHz
2.1 2.3 2.5 V
±1.27
1.9
1.8
±1.45
2.1
2.0
±1.62
2.3
2.2
kHz
V
V
Continued on the following page…
PWM Frequency
fOSC
fOSC-G
VFB-ZDC VFB-ZDCR VFB-G
VFB-N
Figure 8. VFB vs. PWM Frequency
VFB
© 2011 Fairchild Semiconductor Corporation
FAN6754A • Rev. 1.0.3
7
www.fairchildsemi.com

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관련 데이터시트

부품번호상세설명 및 기능제조사
FAN6754

Highly Integrated Green-Mode PWM Controller

Fairchild Semiconductor
Fairchild Semiconductor
FAN6754A

Highly Integrated Green- Mode PWM Controller

Fairchild Semiconductor
Fairchild Semiconductor

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