February 2017
DocID022794 Rev 2
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This is information on a product in full production.
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VIPER06
Energy saving high voltage converter for direct feedback
Datasheet - production data
Applications
Replacement of capacitive power supplies
Home appliances
Power metering
LED drivers
Description
The VIPER06 is an offline converter with an
Figure 1: Typical application
800 V avalanche rugged power section, a PWM
controller, a user-defined overcurrent limit,
open-loop failure protection, hysteretic thermal
protection, soft startup and safe auto-restart after
any fault condition. The device is able to power
itself directly from the rectified mains, eliminating
the need for an auxiliary bias winding. Advanced
frequency jittering reduces EMI filter cost. Burst
mode operation and the device’s very low power
consumption both help to meet the standards set
by energy-saving regulations.
Features
800 V avalanche rugged power section
PWM operation with frequency jittering for
low EMI
Operating frequency:
30 kHz for VIPER06Xx
60 kHz for VIPER06Lx
115 kHz for VIPER06Hx
No need for an auxiliary winding in
low-power applications
Standby power < 30 mW at 265 VAC
Limiting current with adjustable set point
On-board soft-start
Safe auto-restart after a fault condition
Hysteretic thermal shutdown
Contents
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Contents
1 Block diagram .................................................................................. 3
2 Typical power .................................................................................. 3
3 Pin settings ...................................................................................... 4
4 Electrical data .................................................................................. 5
4.1 Maximum ratings ............................................................................... 5
4.2 Thermal data ..................................................................................... 5
4.3 Electrical characteristics .................................................................... 7
5 Typical electrical characteristics.................................................... 9
6 Typical circuit ................................................................................ 12
7 Power section ................................................................................ 14
8 High voltage current generator .................................................... 14
9 Oscillator ........................................................................................ 15
10 Soft startup .................................................................................... 15
11 Adjustable current limit set point ................................................. 15
12 FB pin and COMP pin .................................................................... 16
13 Burst mode .................................................................................... 17
14 Automatic auto-restart after overload or short-circuit ................ 18
15 Open-loop failure protection ........................................................ 19
16 Layout guidelines and design recommendations ....................... 20
17 Package information ..................................................................... 22
17.1 SSO10 package information ........................................................... 22
17.2 DIP-7 package information .............................................................. 24
18 Ordering information ..................................................................... 26
19 Revision history ............................................................................ 27
VIPER06
Block diagram
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Part number
230 VAC
85-265 VAC
Adapter
(1)
Open frame
(2)
Adapter
(1)
Open frame
(2)
VIPER06
6 W
8 W
4 W
5 W
Notes:
(1)
Typical continuous power in non-ventilated enclosed adapter measured at 50 °C ambient.
(2)
Maximum practical continuous power in an open-frame design at 50 °C ambient, with adequate heat sinking.
1 Block diagram
Figure 2: Block diagram
2 Typical power
Table 1: Typical power
Pin settings
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The copper area for heat dissipation has to be designed under the DRAIN pins.
Pin
Name
Function
DIP-7
SSO10
1 1 GND
Connected to the source of the internal power MOSFET and
controller ground reference.
2 2 VDD
Supply voltage of the control section. This pin provides the charging
current of the external capacitor.
3 3 LIM
This pin allows setting the drain current limitation. The limit can be
reduced by connecting an external resistor between this pin and
GND. Pin left open if default drain current limitation is used.
4 4 FB
Inverting input of the internal transconductance error amplifier.
Connecting the converter output to this pin through a single resistor
results in an output voltage equal to the error amplifier reference
voltage (see V
FB_REF
in Table 6: "Supply section "). An external
resistor divider is required for higher output voltages.
5
5
COMP
Output of the internal transconductance error amplifier. The
compensation network has to be placed between this pin and GND
to achieve stability and good dynamic performance of the voltage
control loop. The pin is used also to directly control the PWM with
an optocoupler. The linear voltage range extends from V
COMPL
to
V
COMPH
(Table 6: "Supply section ").
7, 8
6-10
DRAIN
High-voltage drain pins. The built-in high-voltage switched startup
bias current is drawn from these pins too. Pins connected to the
metal frame to facilitate heat dissipation.
3 Pin settings
Figure 3: Connection diagram (top view)
Table 2: Pin description
VIPER06
Electrical data
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Symbol
Pin (DIP-7)
Parameter
Value
Unit
Min.
Max.
V
DRAIN
7, 8
Drain-to-source (ground) voltage
800
V
EAV
7, 8
Repetitive avalanche energy
(limited by TJ = 150 °C)
2
mJ
IAR
7, 8
Repetitive avalanche current
(limited by TJ = 150 °C)
1
A
I
DRAIN
7, 8
Pulse drain current
(limited by TJ = 150 °C)
2.5
A
V
COMP
5
Input pin voltage
-0.3
3.5 V VFB
4
Input pin voltage
-0.3
4.8 V V
LIM
3
Input pin voltage
-0.3
2.8
V
VDD
2
Supply voltage
-0.3
Self-
limited
V
IDD
2
Input current
20
mA
P
TOT
Power dissipation at TA < 40 °C (DIP-7)
1
W
Power dissipation at TA < 50 °C (SSO10)
1 W TJ
Operating junction temperature range
-40
150
°C
T
STG
Storage temperature
-55
150
°C
Symbol
Parameter
Max. value
SSO10
Max. value
DIP-7
Unit
R
thJP
Thermal resistance junction pin
(dissipated power = 1 W)
35
40
°C/W
R
thJA
Thermal resistance junction ambient
(dissipated power = 1 W)
145
110
°C/W
R
thJA
Thermal resistance junction ambient
(dissipated power = 1 W)
(1)
90
90
°C/W
Notes:
(1)
When mounted on a standard single side FR4 board with 100 mm2 (0.155 sq in) of Cu (35 µm thick).
4 Electrical data
4.1 Maximum ratings
Table 3: Absolute maximum ratings
4.2 Thermal data
Table 4: Thermal data
Electrical data
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Figure 4: R
thja
vs A
VIPER06
Electrical data
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Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
V
BVDSS
Breakdown voltage
I
DRAIN
= 1 mA, V
COMP
= GND,
TJ = 25 °C
800
V
I
OFF
OFF state drain current
V
DRAIN
= max rating,
V
COMP
= GND
60
µA
R
DS(on)
Drain-source on-state resistance
I
DRAIN
= 0.2 A, TJ = 25 °C
32 Ω I
DRAIN
= 0.2 A, TJ = 125 °C
67
Ω
C
OSS
Effective (energy related) output
capacitance
V
DRAIN
= 0 to 640 V
10 pF
Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
Voltage
V
DRAIN_START
Drain-source startup voltage
25
45
V
I
DDch1
Startup charging current
V
DRAIN
= 100 V to 640 V,
VDD = 4 V
-0.6 -1.8
mA
I
DDch2
Charging current during
operation
V
DRAIN
= 100 V to 640 V,
VDD = 9 V falling edge
-7 -14
mA
VDD
Operating voltage range
11.5
23.5 V V
DDclamp
VDD clamp voltage
IDD = 15 mA
23.5
V
V
DDon
VDD startup threshold
12
13
14
V
V
DDCSon
VDD on internal high-voltage
current generator threshold
9.5
10.5
11.5 V V
DDoff
VDD undervoltage shutdown
threshold
7 8 9
V
Current
I
DD0
Operating supply current, not
switching
F
OSC
= 0 kHz, V
COMP
= GND
0.6
mA
I
DD1
Operating supply current,
switching
V
DRAIN
= 120 V, F
OSC
= 30 kHz
1.3
mA
V
DRAIN
= 120 V, F
OSC
= 60 kHz
1.45
mA
V
DRAIN
= 120 V, F
OSC
= 115 kHz
1.6
mA
I
DDoff
Operating supply current with
VDD < V
DDoff
V
DD
= 5 V
0.35
mA
I
DDol
Open-loop failure current
threshold
VDD = V
DDclamp VCOMP
= 3.3 V
4
mA
a
4.3 Electrical characteristics
(TJ = -25 to 125 °C, VDD = 14 Va unless otherwise specified).
Table 5: Power section
Table 6: Supply section
Adjust V
above V
DD
DDon
startup threshold before setting to 14 V.
Electrical data
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Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
Error amplifier
V
REF_FB
FB reference voltage
3.2
3.3
3.4 V I
FB_PULL UP
Current pull-up
-1
µA
GM
Transconductance
2
mA/V
Current setting (LIM) pin
V
LIM_LOW
Low-level clamp voltage
I
LIM
= -100 µA
0.5
V
Compensation (COMP) pin
V
COMPH
Upper saturation limit
TJ = 25 °C
3 V V
COMPL
Burst mode threshold
TJ = 25 °C
1
1.1
1.2 V V
COMPL_HYS
Burst mode hysteresis
TJ = 25 °C
40
mV
H
COMP
∆V
COMP
/ ∆I
DRAIN
3 6 V/A
R
COMP(DYN)
Dynamic resistance
V
FB
= GND
15
kΩ
I
COMP
Source / sink current
V
FB
> 100 mV
150
µA
Max source current
V
COMP
= GND, V
FB
= GND
220
µA
Current limitation
I
Dlim
Drain current limitation
I
LIM
= -10 µA, V
COMP
= 3.3 V,
TJ = 25 °C
0.32
0.35
0.38
A
tSS
Soft-start time
8.5
ms
T
ON_MIN
Minimum turn-on time
450
ns
I
Dlim_bm
Burst mode current limitation
V
COMP
= V
COMPL
85
mA
Overload
t
OVL
Overload time
50
ms
t
RESTART
Restart time after fault
1
s
Oscillator section
F
OSC
Switching frequency
VIPER06Xx
27
30
33
kHz
VIPER06Lx
54
60
66
kHz
VIPER06Hx
103
115
127
kHz
FD
Modulation depth
F
OSC
= 30 kHz
±2
kHz
F
OSC
= 60 kHz
±4
kHz
F
OSC
= 115 kHz
±8
kHz
FM
Modulation frequency
230
Hz
D
MAX
Maximum duty cycle
70
80
%
Thermal shutdown
TSD
Thermal shutdown temperature
150
160
°C
T
HYST
Thermal shutdown hysteresis
30
°C
Table 7: Controller section
VIPER06
Typical electrical characteristics
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Figure 5: I
Dlim
vs TJ
Figure 6: F
OSC
vs TJ
Figure 7: V
DRAIN_START
vs TJ
Figure 8: H
COMP
vs TJ
Figure 9: GM vs TJ
Figure 10: V
REF_FB
vs TJ
5 Typical electrical characteristics
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