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PDF HF01B03 Data sheet ( Hoja de datos )
| Número de pieza | HF01B03 | |
| Descripción | (HF01B00 - HF01B04) Off Line High Voltage Quasi Resonant Regulator | |
| Fabricantes | MPS | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de HF01B03 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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The Future of Analog IC Technology
DESCRIPTION
The HF01B00/01/02/03/04 is a flyback regulator
with Green Mode Operation. Its high efficiency
feature over the entire input/load range meets
the stringent world-wide energy-saving
requirements.
The HF01B00/01/02/03/04 is an integrated
current mode controller with a 700V FET. Its
valley switching detector ensures minimum
Drain-Source voltage switching every cycle, per
Quasi-resonant operation. When the output
power falls below a given level, the regulator
enters the burst mode to lower the stand-by
power consumption.
An internal minimum off time limiter prevents
the switching frequency from exceeding 150kHz,
which is below the CISPR-22 EMI start limit.
Internal 2.4ms soft start prevents the excessive
inrush current during start up
The HF01B00/01/02/03/04 provides various
protections, such as Thermal Shutdown (TSD),
VCC Under Voltage Lockout (UVLO), Over Load
Protection (OLP), Over Voltage Protection
(OVP) and so on.
The HF01B00/01/02/03 is available in PDIP8-7
package. And HF01B04 is available in PDIP8-7
and SOIC7.
Maximum Output Power4
P/N 230Vac±15%3 85Vac~265Vac
Adapter1
Open
Frame2
Adapter1
Open
Frame2
HF01B00DP 35W 54W 23W 30W
HF01B01DP 29W 45W 18W 23W
HF01B02DP 24W 33W 14W 17W
HF01B03DP 22W 30W 11W 13W
HF01B04DP 19W
HF01B04DS 19W
23W
23W
8W
8W
11W
11W
Notes:
1. Maximum continuous power in a non-ventilated enclosed
adapter measured at 50℃ ambient temperature.
2. Maximum continuous power in an open frame design at 50℃
ambient temperature.
3. 230Vac or 110/115Vac with doubler.
4. The junction temperature can limit the maximum output power.
HF01B00/01/02/03/04
Off Line High Voltage
Quasi Resonant Regulator
FEATURES
• Internal Integrated 700V MOSFET
• High Level of Integration, Requires Very
Few External Components
• Universal Input Voltage (85~265VAC)
• Quasi-Resonant Operation over the Entire
Input and Load Range
• Maximum Switching Frequency Limited
• Valley Switching for High Efficiency and
Better EMI Performance
• Active Burst Mode for Low Standby Power
Consumption
• Internal High-Voltage Current Source for
Start-Up
• Internal Soft Start
• Internal 320ns Leading Edge Blanking
• Thermal Shutdown (Auto Restart with
Hysteresis)
• VCC Under Voltage Lockout with Hysteresis
(UVLO)
• Over Voltage Protection
• Over Load Protection.
• No Load Consumption at 265Vac
HF01B00<100mW
HF01B01<80mW
HF01B02/03<50mW
HF01B04<30mW
APPLICATIONS
• Battery charger for consumer and home
equipment.
• Standby power supply.
• Small power SMPS for white goods and
consumer electronics.
• Low/Medium power AC/DC adapter.
For MPS green status, please visit MPS website under Quality Assurance.
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
HF01B00/01/02/03/04 Rev. 1.11
www.MonolithicPower.com
7/4/2011
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
1
Free Datasheet http://www.nDatasheet.com
1 page  
HF01B00/01/02/03/04–OFF LINE HIGH VOLTAGE QUASI RESONANT REGULATOR
PIN FUNCTIONS
Pin #
1
2
3
4
5
6
7
8
Name
VSD
VCC
N/C
D
S
S
GND
FB
Description
Valley switching detector of the auxiliary flyback signal. It ensures Discontinuous Conduction
Mode (DCM) operation with valley switching over the entire input/load range. This pin also
offers OVP detection.
Supply voltage pin. Typically connect a 22μF bulk capacitor and a 0.1uF ceramic capacitor
to this Pin. When VCC is charged to 12V, the internal high voltage current source turns off
and the IC starts switching; when it falls back to 8V, the high voltage current source turns on
again and the IC stops switching.
Not connected. This pin ensures adequate creepage distance.
Drain of the internal MOSFET. Input for the start up high voltage current source.
Source of the internal MOSFET. Input of the primary current sense signal.
Source of the internal MOSFET. Input of the primary current sense signal.
The IC Ground.
This pin sets the primary peak current limit, by directly connecting an optocoupler to this pin
to close the feedback loop. A feedback voltage of 3.7V on this pin will trigger an Over Load
Protection while 0.5V will trigger a Burst Mode operation. The regulator leaves Burst Mode
Operation and enters normal operation when the FB voltage reaches 0.7V
HF01B00/01/02/03/04 Rev. 1.11
www.MonolithicPower.com
7/4/2011
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
5
Free Datasheet http://www.nDatasheet.com
5 Page 
HF01B00/01/02/03/04–OFF LINE HIGH VOLTAGE QUASI RESONANT REGULATOR
Where, VOVP is the output voltage when OVP
happens; NS is the turns of secondary winding of
the transformer; NA is the turns of the auxiliary
winding.
The plateau voltage of the auxiliary winding is
sampled at the VSD pin with a 3.5us delay after
the turn-off sequence. Otherwise, the ringing
cause by transformer leakage inductance may
unintentional trigger the OVP.
VAUX
3.5us
OVP Sample
mis-trigger the OLP, to prevent this undesired
protection, OLP circuit is designed to be triggered
after Vcc is decreased below 8.5V.
Burst Operation
To minimize stand-by power consumption, the
HF01B00/01/02/03/04 implement burst mode at
no load or light load. As the load decreases, the
FB voltage decreases. The IC stops switching
when the FB voltage drops below the lower
threshold VBRUL—0.5V. Then the output voltage
starts to drop at a rate dependent on the load.
This causes the FB voltage to rise again due to
the negative feedback control loop. Once the FB
voltage exceeds the upper threshold VBRUH—0.7V,
switching pulse resumes. The FB voltage then
decreases and the whole process repeats. Burst-
mode operation alternately enables and disables
the switching pulse of the MOSFET. Hence
switching loss at no load or light load conditions
is greatly reduced.
Figure 10 shows the burst mode operation of
HF01B00/01/02/03/04
Figure 9—OVP Sample Delay
Over Load Protection (OLP)
In a flyback converter, the maximum output
power is limited by the maximum switching
frequency and primary peak current. If the load
consumes more than the maximum output power,
output voltage will drop below the set point. This
reduces the current through the optocoupler LED
by the negative feedback control loop, and thus
FB voltage goes up.
The voltage at the FB Pin is continuously
monitored. When the feedback voltage exceeds
the VOLP threshold—3.7V, the IC stops switching
and enters a safe low-power operating mode that
prevents from any lethal thermal or stress
damage. As soon as the fault disappears, the IC
resumes switching. Thus the circuit operates in a
burst manner, called auto-recovery. During fault
condition, the VCC UVLO lower threshold drops
down from 8V to 5.5V.
During the start-up phase or load transient, the
FB voltage stays high enough temporarily to
Figure 10—Burst Mode Operation
Thermal shutdown (TSD)
To prevents from any lethal thermal damage, the
HF01B00/01/02/03/04 shuts down switching
cycle when the junction temperature exceeds
150 ℃ . As soon as the junction temperature
drops below 110℃, the power supply resumes
operation. During OTP, the lower threshold of the
VCC UVLO drops from 8V to 5.5V
HF01B00/01/02/03/04 Rev. 1.11
www.MonolithicPower.com
7/4/2011
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
11
Free Datasheet http://www.nDatasheet.com
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet HF01B03.PDF ] | |
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