DatasheetsPDF.com

Primary Switcher. HT7A6322 Datasheet

DatasheetsPDF.com

Primary Switcher. HT7A6322 Datasheet






HT7A6322 Switcher. Datasheet pdf. Equivalent




HT7A6322 Switcher. Datasheet pdf. Equivalent





Part

HT7A6322

Description

Low Power Primary Switcher



Feature


HT7A6322 Low Power Primary Switcher for Off Line SMPS Features • Fixed 60kH z switching frequency • 9V to 38V wi de range VCC voltage • Wide AC input range from 85VAC to 265VAC • PWM wi th current mode control • Auxiliary Under Voltage Lock Out with hysteresis • High voltage start-up current sour ce • Excellent standby low power con sumption • Over-temperature, Ov.
Manufacture

Holtek Semiconductor

Datasheet
Download HT7A6322 Datasheet


Holtek Semiconductor HT7A6322

HT7A6322; er-current and Over-voltage protection w ith auto-restart • Integrated 730V M OSFET • Burst mode under low load co nditions Applications • Off line po wer supply for battery charger adapters • Standby power supply for TV or mo nitors • Auxiliary supply for motor control • Air conditioner power supp ly • Electromagnetic oven power supp ly General Description The HT7A6.


Holtek Semiconductor HT7A6322

322 is highly functionally integrated lo w power primary switcher device which c ombines an integrated PWM controller wi th current mode control and a high volt age power MOSFET on the same silicon ch ip. Typical Power Capability Typ .


Holtek Semiconductor HT7A6322

.

Part

HT7A6322

Description

Low Power Primary Switcher



Feature


HT7A6322 Low Power Primary Switcher for Off Line SMPS Features • Fixed 60kH z switching frequency • 9V to 38V wi de range VCC voltage • Wide AC input range from 85VAC to 265VAC • PWM wi th current mode control • Auxiliary Under Voltage Lock Out with hysteresis • High voltage start-up current sour ce • Excellent standby low power con sumption • Over-temperature, Ov.
Manufacture

Holtek Semiconductor

Datasheet
Download HT7A6322 Datasheet




 HT7A6322
HT7A6322
Low Power Primary Switcher for Off Line SMPS
Features
• Fixed 60kHz switching frequency
9V to 38V wide range VCC voltage
• Wide AC input range from 85VAC to 265VAC
PWM with current mode control
• Auxiliary Under Voltage Lock Out with hysteresis
• High voltage start-up current source
• Excellent standby low power consumption
• Over-temperature, Over-current and Over-voltage
protection with auto-restart
• Integrated 730V MOSFET
Burst mode under low load conditions
Applications
• Off line power supply for battery charger adapters
• Standby power supply for TV or monitors
• Auxiliary supply for motor control
• Air conditioner power supply
• Electromagnetic oven power supply
General Description
The HT7A6322 is highly functionally integrated low
power primary switcher device which combines an
integrated PWM controller with current mode control
and a high voltage power MOSFET on the same
silicon chip.
Typical Power Capability
Type
European (195~265VAC)
US (85~265VAC)
8SOP
12W
7W
8DIP
20W
12W
Typical Performance Characteristics Application Circuit
Isolation Flyback Topology
Snubber Circuit
Vac
VOUT+
VOUT-
SW VCC
HT7A6322
VSS FB
PC817
TL 431
Rev. 1.20
1 January 18, 2018




 HT7A6322
Block Diagram
VCC
FB
Regulator
On/Off
60kHz
Oscillator
Internal Supply
UVLO
8V/14.5V
38V
OTP
Detector
R1 S
R2 Q
RQ
S
R3
R4
Over Voltage
Latch
RFB1
PWM
Latch
LEB
HT7A6322
SW
0.23V
RFB2
VSS
Pin Assignment
VSS
VSS
FB
VCC
18
27
36
45
HT7A6322
8 SOP-A
SW
SW
SW
SW
VSS
VSS
FB
VCC
18
27
36
45
HT7A6322
8 DIP-A
SW
SW
SW
SW
Pin Description
Pin No.
8SOP
8DIP
1, 2 1, 2
33
44
5, 6, 7, 8 5, 6, 7, 8
Pin Name
Description
VSS
FB
VCC
SW
Power MOSFET source and circuit ground reference.
Feedback input. The useful voltage range extends from 0V to 1V, and
defines the peak drain MOSFET current. The current limitation, which
corresponds to the maximum drain current, is obtained when the FB pin is
shorted to the VSS pin.
Control circuit power supply. Also provides a charging current during start
up due to a high voltage current source connected to SW. For this purpose,
a hysteresis comparator monitors the VCC voltage and provides two
thresholds:
VCCON: Voltage value (typically 14.5V) at which the device starts switching
and turns off the start up current source.
VCCOFF: Voltage value (typically 8V) at which the device stops switching and
turns on the start up current source.
Power MOSFET drain. Also used by the internal high voltage current
source during the start up phase to charge the external VCC capacitor.
Rev. 1.20
2 January 18, 2018




 HT7A6322
HT7A6322
Absolute Maximum Ratings
Symbol
VDS(sw)
VDS(st)
ID
VCC
IFB
VESD
tC
tSTG
TJ
Parameter
Switching drain source voltage (TJ=25°C to 125°C)(1)
Start-up drain source voltage (TJ=25°C to 125°C)(2)
Continuous drain current
Supply voltage
Feedback current
Electrostatic discharge: machine mode
Electrostatic discharge: human body mode
Operating temperature range
Storage temperature range
Junction operating temperature
Value
-0.3V to 730V
-0.3V to 400V
Internally limited
0V to 41V
3mA
400V
3kV
-40°C to 150°C
-55°C to 150°C
Internally limited
Note: 1. This parameter applies when the start-up current source is off. This is the case when the VCC voltage has
reached VCCON and remains above VCCOFF.
2. This parameter applies when the start up current source is on. This is the case when the VCC voltage has
not yet reached VCCON or has fallen below VCCOFF.
Thermal Data
Symbol
RTHJC
RTHJA
Parameter
Thermal resistance junction-case
Thermal resistance ambient-case(note)
8SOP
25
55
8DIP
15
45
Unit
°C/W
°C/W
Note: When mounted on a standard single-sided FR4 board with 200mm2 of Cu (at least 35μm thick) connected to
all SW pins.
Rev. 1.20
3 January 18, 2018



Recommended third-party HT7A6322 Datasheet






@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)