ST L6384E User Manual

L6384E

High-voltage half bridge driver

Features

■High voltage rail up to 600V

■dV/dt immunity ±50V/nsec in full temperature range

■Driver current capability:

–400mA source,

–650mA 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

■SO-8/DIP-8 packages

Figure 1. Block diagram

DIP-8

SO-8

Description

The L6384E is an high-voltage device, manufactured with the BCD"OFF-LINE" technology. It has an Half - Bridge Driver structure that enables to drive N-channel Power MOS or IGBT. The High Side (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 Low and High Side 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
			LEVEL
	VCC					VCC
			SHIFTER
		Idt				5	LVG
			DEAD
DT/SD			TIME		LVG	4	GND
					DRIVER
	3	Vthi
							D97IN518A
October 2007			Rev 1				1/17
							www.st.com

Contents	L6384E

Contents

1	Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		. 3
	1.1	Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	3
	1.2	Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	3
	1.3	Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4
2	Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		5
3	Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		6
	3.1	AC operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	6
	3.2	DC operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	6
	3.3	Timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	7
4	Bootstrap driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		8
	4.1	CBOOT selection and charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	8
5	Typical characteristic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		10
6	Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		12
7	Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		15
8	Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		16

2/17

L6384E	Electrical data

1 Electrical data

1.1Absolute maximum ratings

Table 1.	Absolute maximum ratings
Symbol	Parameter	Value	Unit
Vout	Output voltage	-3 to Vboot -18	V
Vcc	Supply voltage (1)	- 0.3 to 14.6	V
Is	Supply current (1)	25	mA
Vboot	Floating supply voltage	-1 to 618	V
Vhvg	High side gate output voltage	-1 to Vboot	V
Vlvg	Low side 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

1.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)

1.2Thermal data

Table 2.	Thermal data
Symbol	Parameter	SO-8	DIP-8	Unit
Rth(JA)	Thermal Resistance Junction to ambient	150	100	°C/W

3/17

Electrical data	L6384E

1.3Recommended operating conditions

Table 3.	Recommended operating conditions
Symbol	Pin	Parameter	Test condition	Min	Typ	Max	Unit
Vout	6	Output Voltage		(1)		580	V
(2)	8	Floating Supply Voltage		(1)		17	V
VBS
fsw		Switching Frequency	HVG,LVG load CL = 1nF			400	kHz
Vcc	2	Supply Voltage				Vclamp	V
Tj		Junction Temperature		-45		125	°C

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

2.VBS = Vboot - Vout

4/17

L6384E	Pin connection

2 Pin connection

Figure 2. Pin connection (Top view)

IN	1	8	VBOOT
VCC	2	7	HVG
DT/SD	3	6	VOUT
GND	4	5	LVG
		D97IN519

	Table 4.	Pin description
	N°	Pin	Type	Function
	1	IN	I	Logic Input: it is in phase with HVG and in opposition of phase with LVG. It
				is compatible to VCC voltage. [Vil Max = 1.5V, Vih Min = 3.6V]
	2	Vcc		Supply input voltage: there is an internal clamp [Typ. 15.6V]
				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
	3	DT/SD	I	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: V ....270K I	, that allows a dt range of 0.4 - 3.1µs.
				dt	dt
	4	GND		Ground
				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 (@
	5	LVG	O	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	High Side Driver Floating Reference: layout care has to be taken to avoid
				below ground spikes on this pin.
				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
	7	HVG	O	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.
				Bootstrap Supply Voltage: it is the high side driver floating supply. The
	8	Vboot		bootstrap capacitor connected between this pin and pin 6 can be fed by an
				internal structure named "bootstrap driver" (a patented structure). This
				structure can replace the external bootstrap diode.

5/17

Electrical characteristics	L6384E

3 Electrical characteristics

3.1AC operation

Table 5.	AC operation electrical characteristcs (VCC = 14.4V; TJ = 25°C)
Symbol	Pin	Parameter	Test condition	Min	Typ	Max	Unit
ton	1 vs	High/low side driver turn-on	Vout = 0V Rdt= 47kΩ		200+		ns
	5,7	propagation delay			dt
tonsd	3 vs	Shut down input propagation			220	280	ns
	5,7	delay
	1 vs	High/low side driver turn-off	Vout = 0V Rdt = 47kΩ		250	300	ns
toff			Vout = 0V Rdt = 146kΩ		200	250	ns
	5,7	propagation delay
			Vout = 0V Rdt = 270kΩ		170	200	ns
tr	5,7	Rise time	CL = 1000pF		50		ns
tf	5,7	Fall time	CL = 1000pF		30		ns

3.2DC operation

Table 6.	DC operation electrical characteristcs (VCC = 14.4V; TJ = 25°C)
Symbol	Pin	Parameter	Test condition	Min	Typ	Max	Unit
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		VCC UV turn off threshold		9.5	10	10.5	V
Vcchys		VCC UV Hysteresis			2		V
Iqccu	2	Undervoltage quiescent	Vcc ≤ 11V		150		µA
		supply current
Iqcc		Quiescent current	Vin = 0		380	500	µA
Bootstrapped supply voltage section
Vboot		Bootstrap supply voltage				17	V
IQBS		Quiescent current	IN = HIGH			200	µA
ILK	8	High voltage leakage current	Vhvg = Vout = Vboot =			10	µA
			600V
Rdson		Bootstrap driver on	Vcc ≥12.5V; IN = LOW		125		Ω
		resistance (1)

6/17