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L6388

HIGH-VOLTAGE HIGH AND LOW SIDE DRIVER

1 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

■ 3.3V, 5V, 15V CMOS/TTL INPUTS

COMPARATORS WITH HYSTERESYS AND PULL DOWN

■ INTERNAL BOOTSTRAP DIODE

■ OUTPUTS IN PHASE WITH INPUTS

■ DEAD TIME AND INTERLOCKING FUNCTION

2 DESCRIPTION

The L6388 is an high-voltage device, manufactured with the BCD"OFF-LINE" technology.

Figure 2. Block Diagram

gure 1. Package

SO8

DIP8

Table 1. Order Codes

Part Number Package

L6388 DIP8

L6388D SO8

L6388D013TR SO8 in Tape & Reel

It has a Driver structure that enables to drive independent referenced 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.

May 2005

V

CC

HIN

LIN

3

2

1

UV

DETECTION

BOOTSTRAP DRIVER

DETECTION

LOGIC

SHOOT

THROUGH

PREVENTION

UV

LEVEL

SHIFTER

R

S

LVG

DRIVER

V

CC

HVG

DRIVER

Vboot

8

H.V.

HVG

7

OUT

6

LVG

5

GND

4

Cboot

TO LOAD

Rev. 2

1/11

L6388

Table 2. Absolute Maximum Rating

Symbol Parameter Value Unit

V

out

V

cc

V

boot

V

hvg

V

lvg

V

dV

out

P

tot

T

stg

Note: ESD immunity for pins 6, 7 and 8 is guaranteed up to 900V (Human Body Model)

Output Voltage -3 to V

Supply Voltage - 0.3 to +18 V

Floating Supply Voltage - 1 to 618 V

High Side Gate Output Voltage - 1 to V

Low Side Gate Output Voltage -0.3 to Vcc +0.3 V

Logic Input Voltage -0.3 to Vcc +0.3 V

i

/dt Allowed Output Slew Rate 50 V/ns

Total Power Dissipation (Tj = 85°C) 750 mW

Junction Temperature 150 °C

j

Storage Temperature -50 to 150 °C

Figure 3. Pin Connection (Top view)

- 18 V

boot

V

LIN

HIN

V

CC

GND

1

2

3

4 LVG

D97IN517A

8

7

6

5

V

boot

HVG

OUT

Table 3. Pin Description

N. Name Type Function

1 LIN I Low Side Driver Logic Input

2 HIN I High Side Driver Logic Input

3 Vcc I Low Voltage Power Supply

4 GND Ground

5 LVG (*) O Low Side Driver Output

6 OUT O High Side Driver Floating Reference

7 HVG (*) O High Side Driver Output

8 Vboot Bootstrap Supply Voltage

(*) The circuit guarantees 0.3V maximum on the pin (@ Isink = 10mA). 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.

Table 4. Thermal Data

Symbol Parameter SO8 Minidip Unit

R

2/11

th j-amb

Thermal Resistance Junction to Ambient 150 100 °C/W

L6388

Table 5. Recommended Operating Conditions

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

V

out

V

BS

f

sw

V

cc

T

j

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

(*): VBS = Vboot - Vout

6 Output Voltage Note 1 580 V

(*) 8 Floating Supply Voltage Note 1 17 V

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

3 Supply Voltage 17 V

Junction Temperature -45 125 °C

Table 6.

(V

cc

Electrical Characteristics

= 15V; Tj = 25°C)

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

AC OPERATION

t

DT 7,5 Dead Time 220 320 420 ns

1 vs 5

on

off

High/Low Side Driver Turn-On

2 vs 7

Propagation Delay

High/Low Side Driver Turn-Off

V

= 0V 225 300 ns

out

V

= 0V 160 220 ns

out

Propagation Delay

t

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

r

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

f

DC OPERATION

Low Supply Voltage Section

V

ccth1

V

ccth2

V

cchys

I

qccu

I

qcc

R

dson

Bootstrapped Supply Voltage Section

V

BSth1

V

BSth2

V

BShys

IQ

BS

ILK High Voltage Leakage Current V

High/Low Side Driver

I

so

I

si

3Vcc UV Turn On Threshold 9.1 9.6 10.1 V

Vcc UV Turn Off Threshold 7.9 8.3 8.8 V

Vcc UV Hysteresis 0.9 V

Undervoltage Quiescent Supply

Vcc ≤ 9V 250 330 µA

Current

Quiescent Current Vcc = 15V 350 450 µA

Bootstrap Driver on Resistance

V

cc

125 Ω

(**)

8VBS UV Turn On Threshold 8.5 9.5 10.5 V

VBS UV Turn Off Threshold 7.2 8.2 9.2 V

VBS UV Hysteresis 0.9 V

VBS Quiescent Current HVG ON 250 µA

= V

hvg

out

= V

= 600V 10 µA

boot

5,7 Source Short Circuit Current VIN = Vih (tp < 10µs) 300 400 mA

Sink Short Circuit Current VIN = Vil (tp < 10µs) 500 650 mA

3/11

L6388

Table 6.

Electrical Characteristics (continued)

(Vcc = 15V; Tj = 25°C)

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

Logic Inputs

V

I

ih

I

(**) RDSON is tested in the following way:

where I1 is pin 8 current when V

1, 2 Low Level Logic Input Voltage 1.1 V

il

ih

High Level Logic Input Voltage 1.8 V

High Level Logic Input Current VIN = 15V 20 70 µA

il

Low Level Logic Input Current VIN = 0V -1 µA

VCCV

CBOOT

= V

R

DSON

CBOOT1

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

I

1VCCVCCBOOT1

, I2 when V

CBOOT

–()VCCV

CBOOT1

,()I2– VCCV

= V

CBOOT2

–()–

CBOOT2

,()

CCBOOT2

.

Figure 4. Dead Time Waveforms Definitions

LIN

HIN

DT DT

LVG

HVG

Figure 5. Propagation Delay Waveform Definitions

LIN

50%

50%50%

> DT

HIN

LVG

HVG

> DT

50% 50%

50% 50%50%

ton

10%

toff

DT

> DT

90%

50% 50%

50% 50%50%

ton

10%

Interlocking function

90%

toff

4/11