SMPS PRIMARY I.C.

VIPer100/SP

VIPer100A/ASP

SMPS PRIMARY I.C.

May 1999

BLOCK DIAGRAM

T YPE

DSS

DS(on)

VIPer100/SP

620V

3 A

2.5

Ω

VIPer100A/ASP

700V

3 A

2.8

Ω

FEATURE

ADJUSTABLE SWITCHING FREQUENCY UP

TO 200KHZ

CURRENT MODE CONTROL

SOFT START AND SHUT DOWN CONTROL

AUTOMATIC BURST MODE OPERATION IN

STAND-BY CONDITION ABLE TO MEET

”BLUE ANGEL” NORM (<1W TOTAL POWER

CONSUMPTION)

INTERNALLY TRIMMED ZENER

REFERENCE

UNDERVOLTAGE LOCK-OUT WITH

HYSTERESIS

INTEGRATED START-UP SUPPLY

AVALANCHE RUGGED

OVERTEMPERATURE PROTECTION

LOW STAND-BY CURRENT

ADJUSTABLE CURRENT LIMITATION

DESCRIPTION

VIPer100

™

/100A,

made

using

VIPower M0

Technology, combines on the same silicon chip a

state-of-the-art PWM circuit together with an

optimized high voltage avalanche rugged Vertical

Power MOSFET (620V or 700V / 3A).

Typical applications cover off line power supplies

with a secondary power capability of 50W in wide

range condition and 100W in single range or with

doubler configuration. It is compatible from both

primary or secondary regulation loop despite

using around 50%

less

components when

compared with a discrete solution. Burst mode

operation is an additional feature of this device,

offering the possibility to operate in stand-by

mode without extra components.

PowerSO-10

PENTAWATT HV

(022Y)

OSC

COMP

DRAIN

SOURCE

13 V

UVLO

LOGIC

SECURITY

LATCH

PWM

LATCH

R/S

R2 R3

OSCILLATOR

OVERTEMP.

DETECTOR

ERROR

AMPLIFIER

0.5 V

1.7

DELAY

25 0 ns

BLANKING

CURRENT

AMPLIFIER

ON/OFF

0.5V

1 V/A

4.5 V

1/20

ABSOLUTE MAXIMUM RATING

Symb ol

Parameter

Value

Uni t

Continuous Drain-Source Voltage (Tj = 25 to 125

for VIPer100/ SP

for VIPer100A/ASP

-0.3 to 620

-0.3 to 700

Maximum Current

I nternally Limited

Supply Voltage

0 t o 15

OSC

Voltage Range Input

0 t o V

COMP

Voltage Range Input

0 to 5

COMP

Maximum Cont inuous Current

esd

Electrostatic discharge (R = 1. 5 K

Ω

C = 100pF)

4000

D(AR)

Avalanche Drain-Source Current, Repetit ive or Not-Repet itive

= 100

C, Pulse Width Limited by T

max,

<1%)

for VIPer100/ SP

for VIPer100A/ASP

1.4

tot

Power Dissipation at T c = 25

Junct ion Operating Temperature

I nternally Limited

s tg

St orage Temperature

-65 t o 150

THERMAL DATA

PENT AW ATT-HV

Po werSO-10(*)

t hj-ca se

Thermal Resistance Junction-case

Max

1.4

C/W

th j-a mb.

Thermal Resistance Ambient -case

Max

C/W

(*) When mounted using the minimum recommended pad size on FR-4 board.

CURRENT AND VOLTAGE CONVENTIONS

13V

OSC

COMP SOURCE

DRAIN

VDD

COMP

OSC

COMP

OSC

FC00020

CONNECTION DIAGRAMS (Top View)

PENTAWATT HV

PENTAWATT HV (022Y)

PowerSO-10

VIPer100/SP - VIPer100A/ASP

2/20

PINS FUNCTIONAL DESCRIPTION

DRAIN PIN:

Integrated power MOSFET drain pin. It provides

internal bias current during start-up via an

integrated high voltage current source which is

switched off during normal operation. The device

is able to handle an unclamped current during its

normal operation, assuring self protection against

voltage surges, PCB stray inductance, and

allowing a snubberless operation for low output

power.

SOURCE PIN:

Power MOSFET source pin. Primary side circuit

common ground connection.

VDD PIN :

This pin provides two functions :

It corresponds to the low voltage supply of the

control part of the circuit. If V

goes below 8V,

the start-up current source is activated and the

output power MOSFET is switched off until the

voltage reaches 11V. During this phase,

the internal current consumption is reduced,

the V

pin is sourcing a current of about 2mA

and the COMP pin is shorted to ground. After

that, the current source is shut down, and the

device tries to start up by switching again.

This pin is also connected to the error

amplifier, in order to allow primary as well as

secondary regulation configurations. In case of

primary regulation, an internal 13V trimmed

reference voltage is used to maintain V

13V. For secondary regulation, a voltage

between 8.5V and 12.5V will be put on V

by transformer design, in order to stuck the

output of the transconductance amplifier to the

high state. The COMP pin behaves as a

constant current source, and can easily be

connected to the output of an optocoupler.

Note that any overvoltage due to regulation

loop failure is still detected by the error

amplifier through the V

voltage, which

cannot overpass 13V. The output voltage will

be somewhat higher than the nominal one, but

still under control.

COMP PIN :

This pin provides two functions :

It is the output of the error transconductance

amplifier, and allows for the connection of a

compensation network to provide the desired

transfer function of the regulation loop. Its

bandwidth can be easily adjusted to the

needed value with usual components value. As

stated

above,

secondary

regulation

configurations are also implemented through

the COMP pin.

When the COMP voltage is going below 0.5V,

the shut-down of the circuit occurs, with a zero

duty cycle for the power MOSFET. This feature

can be used to switch off the converter, and is

automatically activated by the regulation loop

(whatever is the configuration) to provide a

burst mode operation in case of negligible

output power or open load condition.

OSC PIN :

An R

-C

network must be connected on that pin

to define the switching frequency. Note that

despite the

connection of R

to V

, no

significant frequency change occurs for V

varying from 8V to 15V. It provides also a

synchronisation capability, when connected to an

external frequency source.

ORDERING NUMBERS

PENT AW ATT HV

PENTAW AT T HV (022Y)

Pow erSO-10

VI Per100

VIPer100A

VIPer100 (022Y)

VI Per100A (022Y)

VIPer100SP

VIPer100ASP

VIPer100/SP - VIPer100A/ASP

3/20

AVALANCHE CHARACTERISTICS

Symb ol

Parameter

Max Valu e

Uni t

D(a r)

Avalanche Current , Repet itive or Not -Repetitive

(pulse widt h limited by T

max,

< 1%)

for VIPer100/ SP

for VIPer100A/ASP

(see fig. 12)

1.4

(ar)

Single Pulse Avalanche Energy

(starting T

= 25

C, I

= I

D( ar)

)

(see fig.12)

ELECTRICAL CHARACTERISTICS (T

= 25

C, V

= 13 V, unless otherwise specified)

POWER SECTION

Symb ol

Parameter

T est Con ditio ns

Mi n.

Typ .

Max.

Un it

DSS

Drain-Source Voltage

= 1 mA

COM P

= 0 V

for VIPer100/SP

for VIPer100A/ ASP

(see f ig. 5)

620

700

DSS

Of f-St ate Drain Current

CO MP

= 0 V

= 125

= 620 V

for VIPer100/ SP

= 700 V

for VIPer100A/ASP

DS( on)

St atic Drain Source on

Resistance

= 2 A

for VIPer100/SP

for VIPer100A/ ASP

= 2 A

= 100

for VIPer100/SP

for VIPer100A/ ASP

2.0

2.3

2.5

2.8

4.5

5.0

Ω

Fall T ime

ID = 0.2 A V

= 300 V (1)

(see fig. 3)

100

Rise Time

= 2 A

i n

= 300 V (1)

(see fig. 3)

OSS

Output Capacit ance

= 25 V

150

(1) On Inductive Load, Clamped.

SUPPLY SECTION

Symb ol

Parameter

T est Con ditio ns

Mi n.

Typ .

Max.

Un it

DDch

St art-up Charging

Current

= 5 V

= 70 V

(see fig. 2 and fig. 15)

-2

DD0

Operating Supply Current V

= 12 V,

= 0 KHz

(see fig. 2)

DD1

Operating Supply Current V

= 12 V,

= 100 KHz

15. 5

DD2

Operating Supply Current V

= 12 V,

= 200 KHz

DDo ff

Undervoltage Shut down

(see fig. 2)

DDo n

Undervoltage Reset

(see fig. 2)

DDhyst

Hysteresis St art -up

(see fig. 2)

2. 4

VIPer100/SP - VIPer100A/ASP

4/20

ELECTRICAL CHARACTERISTICS (continued)

OSCILLATOR SECTION

Symb ol

Parameter

T est Con ditio ns

Mi n.

Typ .

Max.

Un it

Oscillator F requency

Total Variation

= 8.2 K

Ω

=2.4 nF

= 9 to15 V

with R

(see fig. 6 and fig. 9)

100

110

KHz

OSCih

Oscillator Peak Volt age

7.1

OSCi l

Oscillator Valley Voltage

3.7

ERROR AMPLIFIER SECTION

Symb ol

Parameter

Test Cond ition s

Mi n.

Typ .

Max.

Un it

DDreg

Regulation Point

COM P

= 0 mA

(see f ig.1)

12. 6

13.4

∆

DDreg

Total Variation

= 0 to 100

Unity Gain Bandwidt h

From Input = V

t o O utput = V

COM P

CO MP pin is open (see fig. 10)

150

KHz

VOL

Open Loop Voltage

Gain

CO MP pin is open (see fig. 10)

DC T ransconduct ance

COMP

= 2.5 V

(see fig. 1)

1. 1

1.5

1.9

mA/V

COMPL O

Output Low Level

COM P

= -400

= 14 V

0.2

COMPHI

Output High Level

COM P

= 400

= 12 V

4.5

COM PLO

Output Low Current

Capability

COMP

= 2.5 V

= 14 V

-600

COMPHI

Output High Current

Capability

COMP

= 2.5 V

= 12 V

600

PWM COMPARATOR SECTION

Symb ol

Parameter

Test Cond ition s

Mi n.

Typ .

Max.

Un it

∆

COMP

∆

Dpea k

COMP

= 1 to 3 V

0. 7

1.3

V/A

COMPof f

COMP

off set

Dp eak

= 10 mA

0.5

Dpeak

Peak Current Limitat ion V

= 12 V

COMP pin open

5.3

Current Sense Delay

to turn-off

= 1 A

250

Blanking Time

250

360

on( mi n)

Minimum on T ime

350

SHUTDOWN AND OVERTEMPERATURE SECTION

Symb ol

Parameter

Test Cond ition s

Mi n.

Typ .

Max.

Un it

COMPth

Restart threshold

(see f ig. 4)

0.5

DI Ssu

Disable Set Up Time

(see f ig. 4)

1.7

t sd

Thermal Shutdown

Temperat ure

(see f ig. 8)

140

170

hyst

Thermal Shutdown

Hysteresis

(see f ig. 8)

VIPer100/SP - VIPer100A/ASP

5/20

Figure 1: V

Regulation Point

COMP

COMPHI

COMPLO

DDreg

Slope =

Gm in mA/V

FC00150

Figure 3: Transition Time

10% Ipeak

10% V

90% V

FC00160

Figure 2: Undervoltage Lockout

DDon

DDch

DD0

DDoff

= 70 V

Fsw = 0

DDhyst

FC00170

Figure 4: Shut Down Action

VCOMP

VOSC

tDISsu

ENABLE

DISABLE

ENABLE

VCOMPth

FC00060

Figure 5: Breakdown Voltage vs Temperature

Figure 6: Typical Frequency Variation

Temperature (

FC00180

100 120

0.95

1.05

1.1

1.15

DSS

(Normalized)

Temperature (

100 120 140

-5

-4

-3

-2

-1

FC00190

(%)

VIPer100/SP - VIPer100A/ASP

6/20