ST L6388E User Manual

L6388E

High-voltage high and low side driver

Features

■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

DIP-8

SO-8

Description

■Switching times 70/40 nsec rise/fall with 1nF load

■3.3 V, 5 V, 15 V CMOS/TTL input comparators with hysteresis and pull-down

■Internal bootstrap diode

■Outputs in phase with inputs

■Dead time and interlocking function

The L6388E is a high-voltage device, manufactured with the BCD™ “offline” technology.

It has a driver structure that enables the driving of independent referenced n channel Power MOSFETs or IGBTs. The high side (floating) section is enabled to work with voltage rail up to 600 V.

The logic inputs are CMOS/TTL compatible to ease the interfacing with controlling devices.

Figure 1. Block diagram

		BOOTSTRAP DRIVER				8	Vboot
VCC							Cboot
	3	UV	UV			HVG	H.V.
		DETECTION	DETECTION	R
						DRIVER	HVG
		LOGIC
				R
						7
	2			S
HIN			LEVEL				OUT
		SHOOT	SHIFTER
						6	TO LOAD
		THROUGH
		PREVENTION				VCC
LIN	1					5	LVG
					LVG	4	GND
					DRIVER

February 2012

Doc ID 13991 Rev 2

1/19

www.st.com

Contents	L6388E

Contents

1	Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		. 3
	1.1	Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	3
	1.2	Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	3
	1.3	Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	3
2	Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		4
3	Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		5
	3.1	AC operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	5
	3.2	DC operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	5
4	Waveform definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		7
5	Input logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		8
6	Bootstrap driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		8
	6.1	CBOOT selection and charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	8
7	Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		11
8	Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		13
9	Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		17
10	Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		18

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L6388E	Electrical data

1 Electrical data

1.1Absolute maximum ratings

	Table 1.	Absolute maximum ratings
	Symbol	Parameter	Value			Unit
			Min.		Max.
	Vout	Output voltage	Vboot -18		Vboot	V
	Vcc	Supply voltage	- 0.3		18	V
	Vboot	Floating supply voltage	- 0.3		618	V
	Vhvg	High side gate output voltage	Vout -0.3		Vboot	V
	Vlvg	Low side gate output voltage	-0.3		Vcc +0.3	V
	Vi	Logic input voltage	-0.3		Vcc +0.3	V
	dVout/dt	Allowed output slew rate			50	V/ns
	Ptot	Total power dissipation (TJ = 85 °C)	750		750	mW
	Tj	Junction temperature	150		150	°C
	Ts	Storage temperature	-50		150	°C
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

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 = 1 nF			400	kHz
Vcc	3	Supply voltage				17	V
TJ		Junction temperature		-45		125	°C

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

2.VBS = Vboot - Vout.

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Pin connection	L6388E

2 Pin connection

Figure 2. Pin connection (top view)

LIN	1	8	Vboot
HIN	2	7	HVG
VCC	3	6	OUT
GND	4	5	LVG
		D97IN517A

Table 4.	Pin description
N°	Pin	Type	Function
1	LIN	I	Low side driver logic input
2	HIN	I	High side driver logic input
3	Vcc		Low-voltage power supply
4	GND		Ground
5	LVG (1)	O	Low side driver output
6	OUT	O	High side driver floating reference
7	HVG (1)	O	High side driver output
8	Vboot		Bootstrap supply voltage

1.The circuit guarantees 0.3 V maximum on the pin (@ Isink = 10mA). This allows the omission of the “bleeder” resistor connected between the gate and the source of the external MOSFET normally used to hold the pin low.

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L6388E	Electrical characteristics

3 Electrical characteristics

(VCC = 15 V; TJ = 25 °C).

3.1AC operation

Table 5.	AC operation electrical characteristics
Symbol	Pin	Parameter	Test condition	Min.	Typ.	Max.	Unit
ton		High/low side driver turn-on	Vout = 0 V		225	300	ns
	1 vs. 5	propagation delay
	2 vs. 7
toff		High/low side driver turn-off	Vout = 0 V		160	220	ns
		propagation delay
tr	5, 7	Rise time	CL = 1000 pF		70	100	ns
tf	5, 7	Fall time	CL = 1000 pF		40	80	ns
DT	5, 7	Dead time		220	320	420	ns

3.2DC operation

Table 6.	DC operation electrical characteristics
Symbol	Pin	Parameter	Test condition	Min.	Typ.	Max.	Unit
Low supply voltage section
Vccth1		Vcc UV turn-on threshold		9.1	9.6	10.1	V
Vccth2		Vcc UV turn-off threshold		7.9	8.3	8.8	V
Vcchys		Vcc UV hysteresis		0.9			V
Iqccu	3	Undervoltage quiescent	Vcc ≤ 9 V		250	330	µA
		supply current
Iqcc		Quiescent current	Vcc = 15 V		350	450	µA
RDS(on)		Bootstrap driver on	Vcc ≥ 12.5 V		125		Ω
		resistance (1)
Bootstrapped supply voltage section
VBSth1		VBS UV turn-on threshold		8.5	9.5	10.5	V
VBSth2		VBS UV turn-off threshold		7.2	8.2	9.2	V
VBShys	8	VBS UV hysteresis		0.9			V
IQBS		VBS quiescent current	HVG ON			250	µA
ILK		High-voltage leakage current	Vhvg = Vout =			10	µA
			Vboot = 600 V

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Electrical characteristics								L6388E
	Table 6.	DC operation electrical characteristics (continued)
	Symbol	Pin	Parameter	Test condition	Min.	Typ.	Max.		Unit
	High/low side driver
	Iso	5,7	Source short-circuit current	VIN = Vih (tp < 10 s)	300	400			mA
	Isi		Sink short-circuit current	VIN = Vil (tp < 10 s)	500	650			mA
	Logic inputs
	Vil		Low logic level input voltage				1.1		V
	Vih	1, 2	High logic level input voltage		1.8				V
	Iih		High logic level input current	VIN = 15 V		20	70		A
	Iil		Low logic level input current	VIN = 0 V	-1				A

1. RDS(on) is tested in the following way:

RDSON	(VCC – VCBOOT1) – (VCC – VCBOOT2)
	= ------	(--V----CC-------,V--------CBOOT-----------------1----)---–----I--2----(--V-----CC------,V------CBOOT2----------------------)
	I1

where I1 is pin 8 current when VCBOOT = VCBOOT1, I2 when VCBOOT = VCBOOT2.

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