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E-L6258EATR

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P32
L6258EA Block diagram
7/32
Note: The number in parenthesis shows the relevant Power Bridge of the circuit. Pins 18, 19, 1
and 36 are connected together.
8V
DD
(5V) Supply voltage input for logic circuitry
9 GND Power ground connection of the internal charge pump circuit
10 V
CP1
Charge pump oscillator output
11 V
CP2
Input for external charge pump capacitor
12 V
BOOT
Overvoltage input for driving of the upper DMOS
13, 31 V
S
Supply voltage input for output stage. They are shorted
internally
14 OUT2A Bridge output connection (2)
15 I
0_2
Logic input of the internal DAC (2). The output voltage of the
DAC is a percentage of the VRef voltage applied according
to the truth Table 5 on page 12.
16 I
1_2
See pin 15
18, 19 PWR_GND
Ground connection. They also conduct heat from die to
printed circuit copper
20, 35 SENSE2, SENSE1 Negative input of the transconductance input amplifier (2, 1)
21 OUT2B
Bridge output connection and positive input of the
tranconductance (2)
22 I
3_2
See pin 15
23 I
2_2
See pin 15
24 EA_OUT_2 Error amplifier output (2)
25 EA_IN_2 Negative input of error amplifier (2)
26, 28 V
REF2
, V
REF1
Reference voltages for the internal DACs, determining the
output current value. Output current also depends on the
logic inputs of the DAC and on the sensing resistor value
27 SIG_GND Signal ground connection
29 EA_IN_1 Negative input of error amplifier (1)
30 EA_OUT_1 Error amplifier output (1)
32 I
2_1
See pin 3
33 I
3_1
See pin 3
34 OUT1B
Bridge output connection and positive input of the
tranconductance (1)
Table 3. Pin functions (continued)
Pin # Name Description
Block diagram L6258EA
8/32
Figure 3. Thermal characteristics
Table 4. Electrical characteristics
(V
S
= 40V; V
DD
= 5V; T
j
= 25°; unless otherwise specified.)
Parameter Description Test condition Min. Typ. Max. Unit
V
S
Supply voltage 12 40 V
V
DD
Logic supply voltage 4.75 5.25 V
V
BOOT
Storage voltage V
S
= 12 to 40V V
S
+6 V
S
+12 V
V
Sense
Max drop across sense
resistor
1.25 V
V
S(off)
Power off reset Off threshold 6 7.2 V
V
DD(off)
Power off reset Off threshold 3.3 4.1 V
I
S(on)
V
S
quiescent current Both bridges ON, no load 15 mA
I
S(off)
V
S
quiescent current Both bridges OFF 7 mA
I
DD
V
DD
operative current 15 mA
Conditions
Power Dissipated
(W)
T Ambient
(˚C)
Thermal J-A resistance
(˚C/W)
5.3 70 15
4.0 70 20
2.3 70 35
pad layout + ground layers + 16 via hol
PCB ref.: 4 LAYER cm 12 x 12
pad layout + ground layers
PCB ref.: 4 LAYER cm 12 x 12
pad layout + 6cm2 on board heat sink
PCB ref.: 2 LAYER cm 12 x 12
D02IN1370
0-20-40
0
2
4
6
8
15˚C/W
20˚C/W
35˚C/W
10
12
20 40 60 80 100 120 140 160
Ambient Temperature (˚C)
Power Dissipated (W)
D04IN1525A
L6258EA Block diagram
9/32
ΔT
SD-H
Shut down hysteresis 25 °C
T
SD
Thermal shutdown 150 °C
f
osc
Triangular oscillator
frequency
(1)
C
FREF
= 1nF 12.5 15 18.5 KHz
TRANSISTORS
I
DSS
Leakage current OFF State 500 μA
R
ds(on)
On resistance ON state 0.6 0.75 W
V
f
Flywheel diode voltage If =1.0A 1 1.4 V
CONTROL LOGIC
V
in(H)
lnput voltage All Inputs 2 V
DD
V
V
in(L)
Input voltage All inputs 0 0.8 V
I
in
Input current
(2)
0 < V
in
< 5V
-150 +10 μA
I
dis
Disable pin input current -10 +150 μA
V
ref1
/
ref2
Reference voltage Operating 0
(3)
V
I
ref
V
ref
terminal input current V
ref
= 1.25 -2 5 μA
FI =
V
ref
/V
sense
PWM loop transfer ratio 2
V
FS
DAC full scale precision V
ref
= 2.5V I
0
/I
1
/I
2
/I
3
= L 1.23 1.34 V
V
offset
Current loop offset
V
ref
= 2.5V I
0
/I
1
/I
2
/I
3
= H -30 +30 mV
V
ref
= 2V I
0
/I
1
/I
2
/I
3
= H;
T
j
= -40 to 125°C
-60 +60 mV
DAC factor ratio
Normalized @ full scale
value
-2 +2 %
SENSE AMPLIFIER
V
cm
lnput common mode
voltage range
-0.7 V
S
+0.7 V
I
inp
Input bias sense1/sense2 -200 0 μA
ERROR AMPLIFIER
G
V
Open loop voltage gain 70 dB
SR Output slew rate Open loop 0.2 V/μs
GBW Gain bandwidth product 400 kHz
1. Chopping frequency is twice fosc value.
2. This is true for all the logic inputs except the disable input.
3. If T
j
is inside the range -40 to -10°C then V
ref
max is 2V+0.5V·(T
j
+ 40°C)/30°C. If T
j
is greater than -10°C
then V
ref
max is 2.5V.
Table 4. Electrical characteristics (continued)
(V
S
= 40V; V
DD
= 5V; T
j
= 25°; unless otherwise specified.)
Parameter Description Test condition Min. Typ. Max. Unit
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P32

E-L6258EATR

Mfr. #:
Buy E-L6258EATR
Manufacturer:
STMicroelectronics
Description:
Motor / Motion / Ignition Controllers & Drivers Industrial & ASIC
Lifecycle:
New from this manufacturer.
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