ST L6388E User Manual

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

■ 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

L6388E

DIP-8 SO-8

Description

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

V

3

CC

HIN

LIN

2

1

UV

DETECTION

LOGIC

SHOOT

THROUGH

PREVENTION

UV

DETECTION

LEVEL

SHIFTER

R

R

S

LVG

DRIVER

V

CC

HVG

DRIVER

Vboot

8

H.V.

HVG

7

OUT

6

LVG

5

GND

4

Cboot

TO LOAD

February 2012 Doc ID 13991 Rev 2 1/19

www.st.com

19

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 C

selection and charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

BOOT

7 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

9 Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2/19 Doc ID 13991 Rev 2

L6388E Electrical data

1 Electrical data

1.1 Absolute maximum ratings

Table 1. Absolute maximum ratings

Val ue

Symbol Parameter

Min. Max.

Unit

dV

V

out

V

V

boot

V

hvg

V

lvg

V

out

P

T

T

Output voltage V

Supply voltage - 0.3 18 V

cc

-18 V

boot

boot

Floating supply voltage - 0.3 618 V

High side gate output voltage V

-0.3 V

out

boot

Low side gate output voltage -0.3 Vcc +0.3 V

Logic input voltage -0.3 Vcc +0.3 V

i

/dtAllowed output slew rate 50 V/ns

Total power dissipation (TJ = 85 °C) 750 750 mW

tot

Junction temperature 150 150 °C

j

Storage temperature -50 150 °C

s

Note: ESD immunity for pins 6, 7, and 8 is guaranteed up to 900 V (human body model).

1.2 Thermal data

Table 2. Thermal data

Symbol Parameter SO-8 DIP-8 Unit

Thermal resistance junction to ambient 150 100 °C/W

R

th(JA)

V

V

1.3 Recommended operating conditions

Table 3. Recommended operating conditions

Symbol Pin Parameter Test condition Min. Typ. Max. Unit

V

out

V

BS

f

sw

V

cc

T

1. If the condition V

2. VBS = V

6 Output voltage

(2)

8 Floating supply voltage

Switching frequency HVG, LVG load CL = 1 nF 400 kHz

3 Supply voltage 17 V

J

Junction temperature -45 125 °C

- V

boot

- V

out

boot

.

< 18 V is guaranteed, V

out

can range from -3 to 580 V.

out

Doc ID 13991 Rev 2 3/19

(1)

(1)

17 V

580 V

Pin connection L6388E

2 Pin connection

Figure 2. Pin connection (top view)

Table 4. Pin description

LIN

HIN

V

CC

GND

1

2

3

4 LVG

D97IN517A

V

8

7

6

5

boot

HVG

OUT

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

8 V

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.

(1)

O High side driver output

Bootstrap supply voltage

boot

4/19 Doc ID 13991 Rev 2

L6388E Electrical characteristics

3 Electrical characteristics

(VCC = 15 V; TJ = 25 °C).

3.1 AC operation

Table 5. AC operation electrical characteristics

Symbol Pin Parameter Test condition Min. Typ. Max. Unit

t

on

1 vs. 5
2 vs. 7

t

off

t

r

t

f

High/low side driver turn-on
propagation delay

High/low side driver turn-off
propagation delay

5, 7 Rise time CL = 1000 pF 70 100 ns

5, 7 Fall time CL = 1000 pF 40 80 ns

DT 5, 7 Dead time 220 320 420 ns

3.2 DC operation

Table 6. DC operation electrical characteristics

Symbol Pin Parameter Test condition Min. Typ. Max. Unit

Low supply voltage section

V

V

V

I

ccth1

ccth2

cchys

qccu

V

cc

Vcc UV turn-off threshold 7.9 8.3 8.8 V

Vcc UV hysteresis 0.9 V

Undervoltage quiescent

3

supply current

= 0 V 225 300 ns

V

out

V

= 0 V 160 220 ns

out

UV turn-on threshold 9.1 9.6 10.1 V

≤ 9 V 250 330 µA

V

cc

I

R

DS(on)

qcc

Quiescent current Vcc = 15 V 350 450 µA

Bootstrap driver on
resistance

(1)

Bootstrapped supply voltage section

V

V

V

I

BSth1

BSth2

BShys

Q

BS

I

LK

V

UV turn-on threshold 8.5 9.5 10.5 V

BS

VBS UV turn-off threshold 7.2 8.2 9.2 V

VBS UV hysteresis 0.9 V

8

VBS quiescent current HVG ON 250 µA

High-voltage leakage current

Doc ID 13991 Rev 2 5/19

V

≥ 12.5 V 125 Ω

cc

= V

V

V

hvg

boot

=

out

= 600 V

10 µA

Electrical characteristics L6388E

Table 6. DC operation electrical characteristics (continued)

Symbol Pin Parameter Test condition Min. Typ. Max. Unit

High/low side driver

I

so

I

si

Logic inputs

V

il

V

ih

1, 2

I

ih

I

il

1. R

where I

is tested in the following way:

DS(on)

is pin 8 current when V

1

Source short-circuit current V

5,7

= Vih (tp < 10 µs) 300 400 mA

IN

Sink short-circuit current VIN = Vil (tp < 10 µs) 500 650 mA

Low logic level input voltage 1.1 V

High logic level input voltage 1.8 V

High logic level input current VIN = 15 V 20 70 µA

Low logic level input current VIN = 0 V -1 µA

V

R

DSON

CBOOT

–()VCCV

CCVCBOOT1

----------- ------------- ------------- ------------- -------------- ------------- ------------- -------------=

I

()I2VCC,V

1VCC,VCBOOT1

= V

CBOOT1

, I2 when V

CBOOT

()–

= V

–()–

CBOOT2

CBOOT2

CBOOT2

.

6/19 Doc ID 13991 Rev 2