Datasheet

L6574
4/10
RECOMMENDED OPERATING CONDITIONS
(*) If the condition Vboot - Vout < 18 is guaranteed, Vout can range from -3 to 580V.
Symbol Parameter Value Unit
V
S
Supply Voltage 10 to V
CL
V
V
OUT
(*) High Side Reference -1 to V
BOOT
-V
CL
V
V
BOOT
(*) Floating Supply Voltage 500 V
ELECTRICAL CHARACTERISTCS
(V
S
= 12V; V
BOOT
-V
OUT
= 12V; T
amb
= 25°C)
Symbol Pin Parameter Test Condition Min. Typ. Max. Unit
Supply Voltage
V
suvp
12 V
s
Turn On Threshold 9.5 10.2 10.9 V
V
suvn
V
s
Turn Off Threshold 7.3 8 8.7 V
V
suvh
Supply Voltage Under Voltage
Hysteresys
2.2 V
V
cl
Supply Voltage Clamping 14.6 15.6 16.6 V
I
su
Start Up Current V
S
< V
suvn
250 µA
I
q
Quiescent Current, fout = 60kHz,
no load.
V
S
> V
supv
2mA
High voltage Section
I
bootleak
16 BOOT pin leakage current V
BOOT
= 580V 5 µA
I
outleak
14 OUT pin Leakage Current V
OUT
= 562V 5 µA
High/Low Side Drivers
I
hvgso
15 High Side Driver Source Current V
HVG
-V
OUT
= 0 170 250 mA
I
hvgsi
15 High Side Driver Sink Current V
HVG
-V
BOOT
= 0 300 450 mA
I
hvgso
11 Low Side Drive Source Current VLVG-GND = 0 170 250 mA
I
lvgsi
11 Low Side Drive Source Current V
LVG
-V
S
= 0 300 450 mA
t
rise
15,
11
Low/High Side Output Rise Time
C
load
= 1nF
80 120 ns
t
fall
Low/High Side Output Fall Time
C
load
= 1nF
50 80 ns
Oscillator
DC
14 Output Duty Cycle 48 50 52 %
f
ing
14 Minimum Output Oscillation
Frequency
C
F
= 470pF;
R
ing
= 50kΩ
58.2 60 61.8 kHz
f
pre
14 Maximum Output Oscillation
Frequency
C
F
= 470pF;
R
ing
= 50kΩ;
R
pre
= 47kΩ
114 120 126 kHz
V
ref
2,4 Voltage to current converters
threshold
1.9 2 2.1 V
I
Vref
2,4 Reference Current 0 120 µA
t
d
14 Dead Time between Low and
High Side Conduction
0.8 1.25 1.7 µs