STMicroelectronics VIPer12ADIP, VIPer12AS Technical data

	VIPer12ADIP
®	VIPer12AS

LOW POWER OFF LINE SMPS PRIMARY SWITCHER

TYPICAL POWER CAPABILITY

	Mains type	SO-8	DIP8
	European	8 W	13 W
	(195 - 265 Vac)
	US / Wide range	5 W	8 W
	(85 - 265 Vac)

nFIXED 60 KHZ SWITCHING FREQUENCY

n9V TO 38V WIDE RANGE VDD VOLTAGE

nCURRENT MODE CONTROL

nAUXILIARY UNDERVOLTAGE LOCKOUT WITH HYSTERESIS

nHIGH VOLTAGE START UP CURRENT SOURCE

nOVERTEMPERATURE, OVERCURRENT AND OVERVOLTAGE PROTECTION WITH AUTORESTART

DESCRIPTION

The VIPer12A combines a dedicated current mode PWM controller with a high voltage Power

SO-8 DIP-8

ORDER CODES

PACKAGE	TUBE	T&R
SO-8	VIPer12AS	VIPer12AS13TR
DIP-8	VIPer12ADIP

MOSFET on the same silicon chip. Typical applications cover off line power supplies for battery charger adapters, standby power supplies for TV or monitors, auxiliary supplies for motor control, etc. The internal control circuit offers the following benefits:

–Large input voltage range on the VDD pin accommodates changes in auxiliary supply voltage. This feature is well adapted to battery charger adapter configurations.

–Automatic burst mode in low load condition.

–Overvoltage protection in hiccup mode.

BLOCK DIAGRAM

									DRAIN
		ON/OFF
						60kHz
REGULATOR					OSCILLATOR
INTERNAL						S	PWM
							LATCH
SUPPLY		OVERTEMP.
					R1	FF	Q
		DETECTOR
					R2	R3	R4
VDD	_							+
8/14.5V							BLANKING	_	0.23 V
	+
				OVERVOLTAGE
	+		R		LATCH				230 Ω
			FF
42V	_	S		Q
									1 kΩ
FB
									SOURCE
November 2003									1/15

VIPer12ADIP / VIPer12AS

PIN FUNCTION

	Name	Function
		Power supply of the control circuits. Also provides a charging current during start up thanks to a high
		voltage current source connected to the drain. For this purpose, an hysteresis comparator monitors the
		VDD voltage and provides two thresholds:
	VDD	- VDDon: Voltage value (typically 14.5V) at which the device starts switching and turns off the start up
		current source.
		- VDDoff: Voltage value (typically 8V) at which the device stops switching and turns on the start up current
		source.
	SOURCE	Power MOSFET source and circuit ground reference.
	DRAIN	Power MOSFET drain. Also used by the internal high voltage current source during start up phase for
		charging the external VDD capacitor.

Feedback input. The useful voltage range extends from 0V to 1V, and defines the peak drain MOSFET FB current. The current limitation, which corresponds to the maximum drain current, is obtained for a FB pin

shorted to the SOURCE pin.

CURRENT AND VOLTAGE CONVENTIONS

IDD	ID
VDD	DRAIN
IFB

	FB	CONTROL
VDD		VD
VFB		SOURCE
	VIPer12A

CONNECTION DIAGRAM

SOURCE 1		8
SOURCE 2		7
FB	3	6
VDD	4	5

DRAIN	SOURCE	1	8	DRAIN
DRAIN	SOURCE	2	7	DRAIN
DRAIN	FB	3	6	DRAIN
DRAIN	VDD	4	5	DRAIN

SO-8

DIP8

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VIPer12ADIP / VIPer12AS

ABSOLUTE MAXIMUM RATINGS

Symbol	Parameter		Value	Unit
VDS(sw)	Switching Drain Source Voltage (Tj=25 ... 125°C)	(See note 1)	-0.3 ... 730	V
VDS(st)	Start Up Drain Source Voltage (Tj=25 ... 125°C)	(See note 2)	-0.3 ... 400	V
ID	Continuous Drain Current		Internally limited	A
VDD	Supply Voltage		0 ... 50	V
IFB	Feedback Current		3	mA
	Electrostatic Discharge:
VESD	Machine Model (R=0Ω; C=200pF)		200	V
	Charged Device Model		1.5	kV
Tj	Junction Operating Temperature		Internally limited	°C
Tc	Case Operating Temperature		-40 to 150	°C
Tstg	Storage Temperature		-55 to 150	°C

Note: 1. This parameter applies when the start up current source is off. This is the case when the VDD voltage has reached VDDon and remains above VDDoff.

2.This parameter applies when the start up current source is on. This is the case when the VDD voltage has not yet reached VDDon or has fallen below VDDoff.

THERMAL DATA

Symbol	Parameter		Max Value	Unit
	Thermal Resistance Junction-Pins for:
Rthj-case	SO-8		25	°C/W
	DIP8		15
	Thermal Resistance Junction-Ambient for:
Rthj-amb	SO-8	(See note 1)	55	°C/W
	DIP8	(See note 1)	45

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.

ELECTRICAL CHARACTERISTICS (Tj=25°C, V DD=18V, unless otherwise specified) POWER SECTION

Symbol	Parameter	Test Conditions		Min.	Typ.	Max.	Unit
BVDSS	Drain-Source Voltage	ID=1mA; VFB=2V		730			V
IDSS	Off State Drain Current	VDS=500V; VFB=2V; Tj=125°C				0.1	mA
RDSon	Static Drain-Source	ID=0.2A			27	30	Ω
	On State Resistance	ID=0.2A; Tj=100°C				54
tf	Fall Time	ID=0.1A; VIN=300V	(See fig.1)		100		ns
		(See note 1)
tr	Rise Time	ID=0.2A; VIN=300V	(See fig.1)		50		ns
		(See note 1)
Coss	Drain Capacitance	VDS=25V			40		pF

Note: 1. On clamped inductive load

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VIPer12ADIP / VIPer12AS

ELECTRICAL CHARACTERISTICS (Tj=25°C, V DD=18V, unless otherwise specified) SUPPLY SECTION

Symbol		Parameter			Test Conditions		Min.	Typ.	Max.	Unit
IDDch		Start Up Charging	VDS=100V; VDD=5V ...VDDon (See fig. 2)					-1		mA
		Current
IDDoff		Start Up Charging	VDD=5V; VDS=100V
		Current					0			mA
			Tj > TSD - THYST
		in Thermal Shutdown
IDD0		Operating Supply Current	IFB=2mA					3	5	mA
		Not Switching
I	DD1	Operating Supply Current	I	FB	=0.5mA; I =50mA	(Note 1)		4.5		mA
		Switching			D
DRST		Restart Duty Cycle				(See fig. 3)		16		%
VDDoff		VDD Undervoltage				(See fig. 2 & 3)	7	8	9	V
		Shutdown Threshold
VDDon		VDD Start Up Threshold				(See fig. 2 & 3)	13	14.5	16	V
VDDhyst		VDD Threshold				(See fig. 2)	5.8	6.5	7.2	V
		Hysteresis
VDDovp		VDD Overvoltage					38	42	46	V
		Threshold

Note: 1. These test conditions obtained with a resistive load are leading to the maximum conduction time of the device.

OSCILLATOR SECTION

Symbol	Parameter	Test Conditions	Min.	Typ.	Max.	Unit
FOSC	Oscillator Frequency	VDD=VDDoff ... 35V; Tj=0 ... 100°C	54	60	66	kHz
	Total Variation

PWM COMPARATOR SECTION

Symbol	Parameter		Test Conditions	Min.	Typ.	Max.	Unit
GID	IFB to ID Current Gain		(See fig. 4)		320
IDlim	Peak Current Limitation	VFB=0V	(See fig. 4)	0.32	0.4	0.48	A
IFBsd	IFB Shutdown Current		(See fig. 4)		0.9		mA
RFB	FB Pin Input Impedance	ID=0mA	(See fig. 4)		1.2		kΩ
td	Current Sense Delay to	ID=0.2A			200		ns
	Turn-Off
tb	Blanking Time				500		ns
tONmin	Minimum Turn On Time				700		ns

OVERTEMPERATURE SECTION

Symbol	Parameter	Test Conditions	Min.	Typ.	Max.	Unit
TSD	Thermal Shutdown	(See fig. 5)	140	170		°C
	Temperature
THYST	Thermal Shutdown	(See fig. 5)		40		°C
	Hysteresis

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VIPer12ADIP / VIPer12AS

Figure 1 : Rise and Fall Time

ID

t

C L D

C << Coss

VDS
	VDD		DRAIN

90%		FB	CONTROL	300V
tfv	trv			SOURCE
		VIPer12A
10%		t

Figure 2 : Start Up VDD Current

IDD

IDD0
VDDhyst
VDDoff	VDD
	VDDon
IDDch	VDS = 100 V
	Fsw = 0 kHz

Figure 3 : Restart Duty Cycle

VDD
VDDon
					VDD	DRAIN
VDDoff			10 F	FB	CONTROL
			μ			100V
tCH		tST	t
				2V		SOURCE
	tS T			VIPer12A
DR ST
	= -------------------------
	tST	+ tCH
						5/15