STMicroelectronics VIPer22ADIP, VIPer22AS Technical data

VIPer22ADI P
®
LOW POWER OFF LINE SMPS PRIMARY SWITCHER
TYPICAL POWER CA PABILITY
Main s t y pe SO-8 DIP- 8
European
(195 - 265 Vac)
US / Wide range
(85 - 265 Vac)
n
FIXED 60 KHZ SWI TCHING FREQUENCY
n
n
CURRENT MODE CONTROL
n
AUXILIARY UNDERVOLTAGE LOCKOUT WITH HYSTERESIS
n
HIGH VOLTAGE START UP CURRENT SOURCE
n
OVERTEMPERA TURE, OVERCURRENT AN D OVERVOLTAGE PROTECTION WITH AUTORESTAR T
DESCRIPTION
The VIPer22A combines a dedicated current mode PWM controller with a high voltage Power
12 W 20 W
7 W 12 W
VIPer22AS
SO-8 DIP-8
ORDER CODE S
PACKAGE TUBE T&R
SO-8 VIPer22AS VIPer22AS13TR DIP-8 VIPer22ADIP -
MOSFET on the same silicon chip. Typical applications cover off line power supplies for battery charg er adapter s, stan dby pow er suppl ies for TV or monitors, auxiliary supplies for motor control, etc. The i nternal control circuit offers the following benefits:
– Large input voltage range on the VDD pin
accommodates changes in auxiliary supply voltage. This fe ature is well adapted to battery
charger adapter configurations. – Automatic burst mode in low load condition. – Overvoltage protection in hiccup mode.
BLO C K DIAGRA M
DRAIN
ON/OFF
REGULATOR
INTERNAL
VDD
FB
8/14.5V
42V
SUPPLY
_
+
+ _
OVERTEMP.
DETECTOR
R
FF
S
OVERVOLTAGE
Q
Septe m ber 2002 1/15
LATCH
60kHz
OSCILLATOR
S
FF
R1
R4QR3
R2
PWM
LATCH
BLANKING
+ _
0.23 V
230
1 k
SOURCE
VIPer22ADIP / VIPer22AS
PIN FUNCTION
Name Function
Power supply of the control circuits. Also provides a charging current during start up thanks to a high voltage current sour ce connected to the drai n. For this p urpose, an hysteresis comparator mo nitors the
voltage and provides two thres holds:
V
DD
V
SOURCE Power MOSFET source and circuit ground reference.
DRAIN
FB
CURRENT AND VOLTAGE CONVENTIONS
- V
DD
: Voltage value (typically 14.5V) at whi ch the device starts switching and tur ns off the start up
DDon
curre nt source.
- V
: Voltage value (typically 8V) at which the device stops switching and turns on the start up current
DDoff
source.
Power MOSFET drain. Al so used by the internal high voltage cu rrent source during start up phase for charging the extern al V
capacitor.
DD
Feedbac k input. The useful voltage range extends from 0V to 1V, and defines the pea k drain MOSFET current. The current limitation, which corresponds to the maximum drain current, is obtained for a FB pin shorted to the SOURCE pin.
CONNECTION DIAGRAM
FB
VDD
1
2
3
4
SOURCE SOURCE SOURCE
I
DD
I
FB
V
DD
V
FB
8
DRAIN
7
DRAIN
6
DRAIN
5
DRAIN
VDD DRAIN
FB
CONTROL
VIPer22A
SOURCE
SOURCE
FB
VDD
I
D
V
D
1
2
3
4
SO-8 DIP8
8
7
6
5
DRAIN DRAIN DRAIN DRAIN
2/15
VIPer22ADIP / VIPer22AS
ABSOLUTE MAXIMUM RATI NGS
Symbol Parameter Value Unit
V
DS(sw)
V
DS(st)
I
V
I
FB
V
ESD
T T
T
Note: 1. This parameter applies when the start up current source is off. This is the case when the VDD voltage has reached V
THERMAL DATA
Symbol Parameter Max Value Unit
Rthj-case
Rthj-amb
Note: 1. When mounted on a standard single-sided FR4 board with 200 mm² of Cu (at least 35 µm thick) connected to all DRAIN pins.
Switchin g Drain Source Voltage (Tj=25 ... 125 ° C) (See note 1)
Start Up Drain Source Voltage (Tj=25 ... 12 5°C) (See note 2) Continuous Drain Current Internally limited A
D
Supply V o ltage 0 ... 50 V
DD
-0.3 ... 730 V
-0.3 ... 400 V
Feedbac k Current 3 mA Electrostatic Discharge:
Machine Model (R=0; C=200pF) Charged Device Model
Junction Operating Temperature Internally limited °C
j
Case Oper ating Temperature -40 to 150 °C
c
Storage Temperature -55 to 150 °C
stg
remains ab ov e V
2. This parameter applies when the s tart up current source is on. This is the case when the V or has fallen below V
DDoff
.
DDoff
.
DD
200
1.5
voltage has not yet reached V
Thermal Resistance Junction-P ins for : SO-8 DIP-8
25 15
Thermal Resistance Junction-A m bient for : SO-8 (See note 1) DIP-8 (See note 1)
55 45
kV
DDon
°C/W
°C/W
V
and
DDon
ELECTRICAL CHARACTERISTICS (Tj=25°C, VDD=18V, unless otherwise specified)
POWER SECTION
Symbol Parameter Test Conditions Min. Typ. Max. Unit
BV
I
DSS
R
DSon
C
Note: 1. On clamped inductiv e load
Drain-Source Voltage
DSS
Off State Drain Current Static Drain-Source
On State Resistance
t
Fall Time
f
t
Rise Time
r
Drain Capaci tance
oss
I
=1mA; VFB=2V
D
V
=500V; VFB=2V; Tj=125°C
DS
=0.4A
I
D
I
=0.4A; Tj=100°C
D
=0.2A; VIN=300V (See fig.1)
I
D
(See note 1)
=0.4A; VIN=300V (See fig.1)
I
D
(See note 1)
V
=25V
DS
730 V
0.1 mA
15 17
31
100 ns
50 ns 40 pF
3/15
VIPer22ADIP / VIPer22AS
ELECTRICAL CHARACTERISTICS (Tj=25°C, VDD=18V, unless otherwise specified)
SUPPLY SECTION
Symbol Parameter Test Conditions Min. Typ. Max. Unit
I
DDch
I
DDoff
I
DD0
I
DD1
D
RST
V
DDoff
V
DDon
V
DDhyst
V
DDovp
Note: 1. These test condit ions obtained with a resist iv e load are lead ing to the maxim um c onduction time of the device.
S ta r t Up Ch arging Current
S ta r t Up Ch arging Current in Thermal Shutdown
Oper ating Supply Current Not Switching
Oper ating Supply Current Switching
DS=100V; V
V
=5V; VDS=100V
V
DD
> TSD - T
T
j
=2mA
I
FB
I
=0.5mA; ID=50mA (Note 1)
FB
DD
HYST
=0V ...V
(See fig. 2)
DDon
-1 mA
0mA
35mA
4.5 mA
Restart Duty Cycle (See fig. 3) 16 % V
Undervoltage
DD
Shut do w n Th reshold VDD Start Up Threshold
VDD Threshold Hysteresis
VDD Overvo ltage Threshold
(See fig. 2 & 3) 7 8 9 V (See fig. 2 & 3) 13 14.5 16 V
(See fig. 2) 5.8 6.5 7.2 V
38 42 46 V
OSCILLATOR SECTION
Symbol Parameter Test Conditions Min. Typ. Max. Unit
F
OSC
Oscillator Frequency Total Variation
V
DD=VDDoff
... 35V; Tj=0 ... 100°C
54 60 66 kHz
PWM COMPARATOR SECTION
Symbol Parameter Test Conditions Min. Typ. Max. Unit
G
I
Dlim
I
FBsd
R
t t
t
ONmin
IFB to ID Current Gain
ID
V
Peak Current Limitation
=0V (See fig. 4)
FB
IFB Shutdown Cur rent
I
FB Pin Input Impedance
FB
Current Sense Delay to
d
Turn-Off Blanking Time 500 ns
b
=0mA (See fig. 4)
D
I
=0.4A
D
(See fig. 4) 560
0.56 0.7 0.84 A
(See fig. 4) 0.9 mA
1.2 k
200 ns
Minimum Turn On Time 700 ns
OVERTEMPERATURE SECTION
Symbol Parameter Test Conditions Min. Typ. Max. Unit
Thermal Shutdown
SD
Temperature Thermal Shutdown
Hysteresis
(See fig. 5) 140 170 °C
(See fig. 5) 40 °C
T
T
HYST
4/15
Figur e 1 : Rise and Fall Time
I
D
V
DS
90%
t
fv
VIPer22ADIP / VIPer22AS
L D
C << Coss
t
VDD DRAIN
FB
CONTROL
t
rv
VIPer22A
C
300V
SOURCE
10%
Figur e 2 : Start Up VDD Current
I
DD
I
DD0
V
DDhyst
I
DDch
V
DDoff
V
DDon
VDS = 100 V
F
sw
Figur e 3 : Restart Duty Cycle
= 0 kHz
t
V
DD
V
V
V
DDon
DDoff
DD
D
RST
VDD DRAIN
10µF
t
CH
-------------------------=
tSTtCH+
t
ST
t
ST
t
FB
CONTROL
2V
VIPer22A
SOURCE
100V
5/15
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