ST L6384 User Manual

L6384

L6384

HIGH-VOLTAGE HALF BRIDGE DRIVER

HIGH VOLTAGE RAIL UP TO 600 V

dV/dt IMMUNITY +- 50 V/nsec IN FULL TEMPERATURE RANGE

DRIVER CURRENT CAPABILITY: 400 mA SOURCE,

650 mA SINK

SWITCHING TIMES 50/30 nsec RISE/FALL WITH 1nF LOAD

CMOS/TTL SCHMITT TRIGGER INPUTS WITH HYSTERESIS AND PULL DOWN SHUT DOWN INPUT

DEAD TIME SETTING UNDER VOLTAGE LOCK OUT

INTEGRATED BOOTSTRAP DIODE CLAMPING ON Vcc

SO8/MINIDIP PACKAGES

DESCRIPTION

The L6384 is an high-voltage device, manufactured with the BCDºOFF-LINEº technology. It has

BLOCK DIAGRAM

SO8	Minidip
ORDERING NUMBERS:
L6384D	L6384

an Half - Bridge Driver structure that enables to drive N Channel Power MOS or IGBT. The Upper (Floating) Section is enabled to work with voltage Rail up to 600V. The Logic Inputs are CMOS/TTL compatible for ease of interfacing with controlling devices. Matched delays between Lower and Upper Section simplify high frequency operation. Dead time setting can be readily accomplished by means of an external resistor.

						H.V.
		VCC
			2		8	VBOOT
			BOOTSTRAP DRIVER
			UV		HVG	CBOOT
			DETECTION		DRIVER	HVG
			R S		7
IN	1		LOGIC			OUT
					6	LOAD
	VCC		LEVEL
					VCC
			SHIFTER
		Idt			5	LVG
			DEAD
DT/SD			TIME	LVG	4	GND
				DRIVER

3

Vthi

D97IN518A

May 2000

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L6384

ABSOLUTE MAXIMUM RATINGS

Symbol	Parameter	Value	Unit
Vout	Output Voltage	-3 to Vboot -18	V
Vcc	Supply Voltage (*)	- 0.3 to 14.6	V
Is	Supply Current (*)	25	mA
Vboot	Floating Supply Voltage	-1 to 618	V
Vhvg	Upper Gate Output Voltage	-1 to Vboot	V
Vlvg	Lower Gate Output Voltage	-0.3 to Vcc +0.3	V
Vi	Logic Input Voltage	-0.3 to Vcc +0.3	V
Vsd	Shut Down/Dead Time Voltage	-0.3 to Vcc +0.3	V
dVout/dt	Allowed Output Slew Rate	50	V/ns
Ptot	Total Power Dissipation (Tj = 85 °C)	750	mW
Tj	Junction Temperature	150	°C
Ts	Storage Temperature	-50 to 150	°C

(*) The device has an internal Clamping Zener between GND and the Vcc pin, It must not be supplied by a Low Impedence Voltage Source. Note: ESD immunity for pins 6, 7 and 8 is guaranteed up to 900 V (Human Body Model)

PIN CONNECTION

			IN	1	8	VBOOT
			VCC	2	7	HVG
			DT/SD	3	6	VOUT
			GND	4	5	LVG
				D97IN519
THERMAL DATA
Symbol				Parameter		SO8	Minidip	Unit
Rth j-amb		Thermal Resistance Junction to Ambient				150	100	°C/W
PIN DESCRIPTION
N.	Name	Type			Function
1	IN	I	Logic Input: it is in phase with HVG and in opposition of phase with LGV. It is compatible
			to VCC voltage. [Vil Max = 1.5V, Vih Min = 3.6V]
2	Vcc	I	Supply input voltage: there is an internal clamp [Typ. 15.6V]
3	DT/SD	I	High impedance pin with two functionalities. When pulled lower than Vdt [Typ. 0.5V] the
			device is shut down. A voltage higher than Vdt sets the dead time between high side gate
			driver and low side gate driver. The dead time value can be set forcing a certain voltage
			level on the pin or connecting a resistor between pin 3 and ground.
			Care must be taken to avoid below threshold spikes on pin 3 that can cause undesired
			shut down of the IC. For this reason the connection of the components between pin 3 and
			ground has to be as short as possible. This pin can not be left floating for the same reason.
			The pin has not be pulled through a low impedance to VCC, because of the drop on the
			current source that feeds Rdt. The operative range is: Vdt....270K Idt, that allows a dt
			range of 0.4 - 3.1μs.
4	GND		Ground

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							L6384
PIN DESCRIPTION (continued)
N.	Name	Type		Function
5	LVG	O	Low Side Driver Output: the output stage can deliver 400mA source and 650mA sink [Typ.
			Values].
			The circuit guarantees 0.3V max on the pin (@ Isink = 10mA) with VCC > 3V and lower than
			the turn on threshold. This allows to omit the bleeder resistor connected between the gate
			and the source of the external mosfet normally used to hold the pin low; the gate driver
			ensures low impedance also in SD conditions.
6	Vout	O	Upper Driver Floating Reference: layout care has to be taken to avoid below ground
			spikes on this pin.
7	HVG	O	High Side Driver Output: the output stage can deliver 400mA source and 650mA sink
			[Typ. Values].
			The circuit gurantees 0.3V max between this pin and Vout (@ Isink = 10mA) with VCC > 3V
			and lower than the turn on threshold. This allows to omit the bleeder resistor connected
			between the gate and the source of the external mosfet normally used to hold the pin low;
			the gate driver ensures low impedance also in SD conditions.
8	Vboot		Bootstrap Supply Voltage: it is the upper driver floating supply. The bootstrap capacitor
			connected between this pin and pin 6 can be fed by an internal structure named ºbootstrap
			driverº (a patented structure). This structure can replace the external bootstrap diode.
RECOMMENDED OPERATING CONDITIONS
Symbol	Pin		Parameter	Test Condition	Min.	Typ.	Max.	Unit
Vout	6	Output Voltage			Note1		580	V
Vboot -	8	Floating Supply Voltage			Note1		17	V
Vout
fsw		Switching Frequency		HVG,LVG load CL = 1nF			400	kHz
Vcc	2	Supply Voltage					Vclamp	V
Tj		Junction Temperature			-45		125	°C

Note 1: If the condition Vboot - Vout < 18V is guaranteed, Vout can range from -3 to 580V.

ELECTRICAL CHARACTERISTICS

AC Operation (VCC = 14.4V; Tj = 25°C)

Symbol	Pin	Parameter	Test Condition	Min.	Typ.	Max.	Unit
ton	1 vs	High/Low Side Driver	Vout = 0V		200+dt		ns
	5,7	Turn-On Propagation Delay	Rdt = 47kΩ
tonsd	3 vs	Shut Down Input Propagation Delay			220	280	ns
	5,7
toff	1 vs	High/Low Side Driver	Vout = 0V		250	300	ns
	5,7	Turn-Off Propagation Delay	Rdt = 47kΩ
			Vout = 0V		200	250	ns
			Rdt = 146kΩ
			Vout = 0V		170	200	ns
			Rdt = 270kΩ
tr	7,5	Rise Time	CL = 1000pF		70		ns
tf	7,5	Fall Time	CL = 1000pF		30		ns
DC Operation (VCC = 14.4V; Tj = 25°C)
Supply Voltage Section
Vclamp	2	Supply Voltage Clamping	Is = 5mA	14.6	15.6	16.6	V
Vccth1	2	Vcc UV Turn On Threshold		11.5	12	12.5	V
Vccth2	2	Vcc UV Turn Off Threshold		9.5	10	10.5	V

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