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PDF HFC0400 Data sheet ( Hoja de datos )
| Número de pieza | HFC0400 | |
| Descripción | Fixed Frequency Flyback Controller | |
| Fabricantes | MPS | |
| Logotipo |  |
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HFC0400
Fixed Frequency Flyback Controller
with Ultra-low No Load Power Consumption
The Future of Analog IC Technology
DESCRIPTION
HFC0400 i s a fixed-frequency current-mode
controller with built-in slope compensation. It
targets medium-power, off-line, flyb ack, swit ch-
mode power supplie s. At light loads, th e
controller freezes the peak current and reduces
its switching frequency down to 25 kHz to offer
excellent light-load efficiency.
At very ligh t loads, the controller enters burst
mode to achieve very low standby power
consumption.
HFC0400 offers frequency jittering to help
dissipate energy generated by conducted noise.
HFC0400 also has an X -cap discharge function
to discharg e the X -cap when the input is
unplugged.
HFC0400 features multiple prote ctions that
include ther mal shutdown (TSD), VCC under-
voltage lockout (UVLO), overloa d protectio n
(OLP), ove r-voltage protection ( OVP), and
brown-out protection.
HFC0400 is available in an SOIC8-7A package.
FEATURES
Fixed-frequency current-mode control with
built-in slope compensation
Frequency foldback down to 25kHz at light
loads
Burst mode for low standby power
consumption
Frequency jitter to reduce EMI signature
X-cap discharge function
Internal high-voltage current source
VCC under-voltage lockout with hysteresis
(UVLO)
Brown-out protection on HV pin
Overload protection with programmable
delay
Thermal shutdown (auto-restart with
hysteresis)
Latch-off for external over-voltage protection
(OVP) and over-temperature protection
(OTP) on TIMER pin
Short-circuit protection
Programmable soft start
APPLICATIONS
AC/DC adapters for notebook computers,
tablets, and smartphones
Offline battery chargers
LCD TV s and monitors
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Products, Quality Assurance page.
“MPS” and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
HFC0400 Rev. 1.0
www.MonolithicPower.com
11/28/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
1
http://www.Datasheet4U.com
1 page  
HFC0400 – FIXED-FREQUENCY FLYBACK CONTROLLER WITH ULTRA-LOW NO LOAD POWER CONSUMPTION
ELECTRICAL CHARACTERICS (continued)
For typical value TJ=25°C, unless otherwise noted
Parameter Sy
mbol Conditions
Feedback (FB )
Internal Pull-Up Resistor
Internal Pull-Up Voltage
VFB to Internal Current Set-Point Division
Ratio
FB Level (Falling) at which the Controller
Enters Burst Mode
FB Level (Rising) at which the Controller
Exits Burst Mode
Over Load Protection
FB Level at which the Controller Enters OLP
after Blanking Time
Time Duration When FB Reaches Protection
Point, Before OLP
RFB
VDD
KFB
VBURL
VBURH
VOLP
τOLP C
TIMER=47nF 50
Frequency Foldback
Frequency Foldback FB Voltage Threshold,
Upper Limit
VFB(FOLD)
Minimum Switching Frequency
Frequency Foldback FB Voltage Threshold,
Lower Limit
fOSC(min)
VFB(FOLDE)
Latch-Off Input (Integration in TIMER )
The Threshold below which Controller is
Latched
VTIMER(LATCH)
Blanking Duration on Latch Detection
DRV Voltage
Driver Voltage High Level
Driver Voltage-Clamp Level
Driver Voltage, Low Level
Driver Voltage, Rise Time
Driver Voltage, Fall Time
Driver Pull-Up Resistance
Driver Pull-Down Resistance
τLATCH
VHigh
VClamp
VLow C
τR C
τF
RPull-up
RPull-down C
CL=1nF VCC=8.4V
CL=1nF VCC=12V
CL=1nF, VCC=24V
L=1nF, VCC=24V
L=1nF, VCC=16V
CL=1nF, VCC=16V
CL=1nF, VCC=16V
L=1nF, VCC=16V
Min
12
0.29
0.42
21
0.9
Typ Max
13 14
4.3
3.0
0.32 0.35
0.46 0.50
3.7
1.8
25 30
1.0
1 1.1
12
6.7
10.3
13.4
16
13
23
8
20
Unit
kΩ
V
--
V
V
V
ms
V
kHz
V
V
μs
V
V
V
mV
ns
ns
Ω
Ω
HFC0400 Rev. 1.0
www.MonolithicPower.com
11/28/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
5
5 Page 
HFC0400 – FIXED-FREQUENCY FLYBACK CONTROLLER WITH ULTRA-LOW NO LOAD POWER CONSUMPTION
TYPICAL PERFORMANCE CHARACTERISIC (continued)
VIN=230VAC, VOUT1=5V, IOUT1=3A, VOUT2=16V, IOUT2=1.5A, TA=25°C, unless otherwise noted.
OVP
OTP Entry
OTP Recovery
Full Load
VOUT1
5V/div.
VOUT2
10V/div.
VCC
10V/div.
VDS
100V/div.
VCC
10V/div.
VFB
2V/div.
VOUT1
2V/div.
VDS
100V/div.
VCC
10V/div.
VFB
2V/div.
VOUT1
2V/div.
Brown-in
VIN=75VAC
VDRV
10V/div.
VCC
10V/div.
VFB
2V/div.
VHV
50V/div.
Brown-out
VIN=72VAC
VDRV
10V/div.
VCC
10V/div.
VFB
2V/div.
VHV
50V/div.
VX-CAP
100V/div.
VX-CAP
100V/div.
Conducted EMI
120 L-Wire
110
1MHz
100
90
80
70
60 EN55022Q
50 EN55022A
40
30
20
10
0
150kHz
10MHz
30MHz
Conducted EMI
120 N-Wire
110
100
90
80
70
60
50
40
30
20
10
0
150kHz
1MHz
EN55022Q
EN55022A
10MHz
30MHz
HFC0400 Rev. 1.0
www.MonolithicPower.com
11/28/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
11
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet HFC0400.PDF ] | |
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