ST VIPER06 User Manual
Features
DIP-7
SSO10
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$#INPUTVOLTAGE
$#OUTPUTVOLTAGE
■ 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 V
Limiting current with adjustable set point
■
■ On-board soft-start
■ Safe auto-restart after a fault condition
■ Hysteretic thermal shutdown
AC
VIPER06
Fixed-frequency VIPer™ plus family
Datasheet — production data
Figure 1. Typical application
Applications
■ Replacement of capacitive power supplies
■ Home appliances
■ Power metering
■ LED drivers
Description
The VIPER06 is an offline converter with an 800 V
avalanche rugged power section, a PWM
controller, a user-defined overcurrent limit, openloop 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.
March 2012 Doc ID 022794 Rev 1 1/28
This is information on a product in full production.
www.st.com
28
Contents VIPER06
Contents
1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 Typical power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.1 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5 Typical electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6 Typical circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7 Power section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
8 High voltage current generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
9 Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
10 Soft startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
11 Adjustable current limit set point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
12 FB pin and COMP pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
13 Burst mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
14 Automatic auto-restart after overload or short-circuit . . . . . . . . . . . . 19
15 Open-loop failure protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
16 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2/28 Doc ID 022794 Rev 1
VIPER06 Contents
17 Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
18 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Doc ID 022794 Rev 1 3/28
Block diagram VIPER06
OLP
LOGIC
+
-
E/A
VDD
GND
+
-
PWM
Oscillator
LEB
BURST-MODE
Logic
TURN-ON
LOGIC
SOFT START
UVLO
BURST
OTP
LIM
V
COMPL
HV_ON
SUPPLY
&
UVLO
I
DDch
V
REF_FB
THERMAL
SHUTDOWN
DRAIN
+
-
OCP
I
DLIM
set-up
S
R
Q
Burst
R
SENSE
OTP
Internal Supply BUS &
REFERENCE VOLTAGES
COMP
FB
1 Block diagram
Figure 2. Block diagram
2 Typical power
Table 1. Typical power
230 V
Part number
Adapter
VIPER06 6 W 8 W 4 W 5 W
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.
4/28 Doc ID 022794 Rev 1
(1)
AC
Open frame
(2)
Adapter
85-265 V
(1)
AC
Open frame
(2)
VIPER06 Pin settings
DRAIN
DRAIN
AM11339v1
DRAIN
DRAIN
DRAIN
DRAIN
DRAIN
GND
VDD
FB
COMP
LIM
3 Pin settings
Figure 3. Connection diagram (top view)
Note: The copper area for heat dissipation has to be designed under the DRAIN pins.
Table 2. Pin description
Pin
Name Function
DIP-7 SSO10
11GND
22VDD
33LIM
44FB
55COMP
7, 8 6-10 DRAIN
Connected to the source of the internal power MOSFET and controller
ground reference.
Supply voltage of the control section. This pin provides the charging
current of the external capacitor.
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.
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
in Table 6). An external resistor divider is
FB_REF
required for higher output voltages.
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
V
COMPH
(Ta bl e 6 ).
COMPL
to
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.
Doc ID 022794 Rev 1 5/28
Electrical data VIPER06
4 Electrical data
4.1 Maximum ratings
Table 3. Absolute maximum ratings
Symbol
V
DRAIN
E
AV
I
AR
I
DRAIN
V
COMP
V
FB
V
LIM
V
DD
I
DD
P
TOT
T
J
T
STG
Pin
(DIP-7)
Parameter
Value
Min Max
7, 8 Drain-to-source (ground) voltage 800 V
7, 8 Repetitive avalanche energy (limited by TJ = 150 °C) 2 mJ
7, 8 Repetitive avalanche current (limited by TJ = 150 °C) 1 A
7, 8 Pulse drain current (limited by TJ = 150 °C) 2.5 A
5 Input pin voltage -0.3 3.5 V
4 Input pin voltage -0.3 4.8 V
3 Input pin voltage -0.3 2.4 V
2 Supply voltage -0.3
Self-
limited
2 Input current 20 mA
Power dissipation at TA < 40 °C (DIP-7) 1 W
Power dissipation at T
< 50 °C (SSO10) 1 W
A
Operating junction temperature range -40 150 °C
Storage temperature -55 150 °C
Unit
V
4.2 Thermal data
Table 4. Thermal data
Symbol Parameter
R
R
R
1. When mounted on a standard single side FR4 board with 100 mm2 (0.155 sq in) of Cu (35 μm thick).
6/28 Doc ID 022794 Rev 1
Thermal resistance junction pin
thJP
(dissipated power = 1 W)
Thermal resistance junction ambient
thJA
(dissipated power = 1 W)
Thermal resistance junction ambient
thJA
(dissipated power = 1 W)
(1)
Max value
SSO10
Max value
DIP-7
35 40 ° C/W
100 110 ° C/W
80 90 ° C/W
Unit
VIPER06 Electrical data
4.3 Electrical characteristics
(TJ = -25 to 125 °C, VDD = 14 V
Table 5. Power section
Symbol Parameter Test condition Min Typ Max Unit
V
BVDSS
I
OFF
R
DS(on)
C
OSS
Table 6. Supply section
Symbol Parameter Test condition Min Typ Max Unit
Vol tag e
Breakdown voltage
OFF state drain current
Drain-source on-state resistance
Effective (energy related) output capacitance V
(a)
unless otherwise specified).
I
= 1 mA,
DRAIN
V
= GND, TJ = 25 °C
COMP
V
V
I
I
= max rating,
DRAIN
= GND
COMP
= 0.2 A, TJ = 25 °C 32 Ω
DRAIN
= 0.2 A, TJ = 125 °C 67 Ω
DRAIN
= 0 to 640 V 10 pF
DRAIN
800 V
60 μA
V
_START
DRAIN
I
DDch1
I
DDch2
V
DD
V
DDclampVDD
V
DDon
V
DDCSon
V
DDoff
Current
I
DD0
I
DD1
I
DDoff
I
DDol
Drain-source startup voltage 25 45 V
= 100 V to 640 V,
V
Startup charging current
Charging current during operation
DRAIN
= 4 V
V
DD
= 100 V to 640 V,
V
DRAIN
= 9 V falling edge
V
DD
-0.6 -1.8 mA
-7 -14 mA
Operating voltage range 11.5 23.5 V
clamp voltage IDD = 15 mA 23.5 V
VDD startup threshold 12 13 14 V
VDD on internal high-voltage current
generator threshold
9.5 10.5 11.5 V
VDD undervoltage shutdown threshold 7 8 9 V
Operating supply current, not switching F
Operating supply current, switching
Operating supply current with VDD < V
DDoffVDD
Open-loop failure current threshold
OSC
V
DRAIN
F
OSC
V
DRAIN
F
OSC
V
DRAIN
F
OSC
V
DD
V
COMP
= 0 kHz, V
= 120 V,
= 30 kHz
= 120 V,
= 60 kHz
= 120 V,
= 115 kHz
< V
DDoff
= V
DDclamp
= 3.3 V,
= GND 0.6 mA
COMP
4 mA
1.3 mA
1.45 mA
1.6 mA
0.35 mA
a. Adjust VDD above V
startup threshold before setting to 14 V.
DDon
Doc ID 022794 Rev 1 7/28
Electrical data VIPER06
Table 7. Controller section
Symbol Parameter Test condition Min Typ Max Unit
Error amplifier
V
REF_FB
I
FB_PULL UP
G
M
FB reference voltage 3.2 3.3 3.4 V
Current pull-up -1 μA
Transconductance 2 mA/V
Current setting (LIM) pin
V
LIM_LOW
Low-level clamp voltage I
Compensation (COMP) pin
V
COMPH
V
COMPL
V
COMPL_HYS
H
COMP
R
COMP(DYN)
Upper saturation limit TJ = 25 °C 3 V
Burst mode threshold TJ = 25 °C 1 1.1 1.2 V
Burst mode hysteresis TJ = 25 °C 40 mV
ΔV
COMP
/ ΔI
DRAIN
Dynamic resistance V
Source / sink current V
I
COMP
Max source current V
Current limitation
I
Dlim
t
SS
T
ON_MIN
I
Dlim_bm
Drain current limitation
Soft-start time 8.5 ms
Minimum turn-on time 450 ns
Burst mode current limitation V
Overload
= -100 μA0.5V
LIM
49V/A
= GND 15 kΩ
FB
> 100 mV 150 μA
FB
COMP
= -10 μA, V
I
LIM
= 25 °C
T
J
COMP
= GND, V
= V
COMPL
= GND 220 μA
FB
= 3.3 V,
COMP
0.32 0.35 0.38 A
85 mA
t
OVL
t
RESTART
Overload time 50 ms
Restart time after fault 1 s
Oscillator section
VIPER06Xx 27 30 33 kHz
F
OSC
Switching frequency
VIPER06Lx 54 60 66 kHz
VIPER06Hx 103 115 127 kHz
= 30 kHz ±3 kHz
F
OSC
F
= 60 kHz ±4 kHz
OSC
F
= 115 kHz ±8 kHz
OSC
D
F
D
F
M
MAX
Modulation depth
Modulation frequency 230 Hz
Maximum duty cycle 70 80 %
8/28 Doc ID 022794 Rev 1
VIPER06 Electrical data
Table 7. Controller section (continued)
Symbol Parameter Test condition Min Typ Max Unit
Thermal shutdown
T
T
HYST
SD
Thermal shutdown temperature 150 160 °C
Thermal shutdown hysteresis 30 °C
Doc ID 022794 Rev 1 9/28
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