L6918 데이터 시트보기 (PDF) - STMicroelectronics
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L6918 Datasheet PDF : 35 Pages
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L6918 L6918A
L6918 (SLAVE) PIN FUNCTION (continued)
N.
Name
Description
24
BOOT2 Channel 2 bootstrap capacitor pin. This pin supplies the high side driver. Connect through a
capacitor to the PHASE2 pin and through a diode to Vcc (cathode vs. boot).
25
UGATE2 Channel 2 high side gate driver output.
26
PHASE2 This pin is connected to the Source of the upper mosfet and provides the return path for the
high side driver of channel 2.
27
LGATE2 Channel 2 low side gate driver output.
28
PGND Power ground pin. This pin is common to both sections and it must be connected through the closest
path to the low side mosfets source pins in order to reduce the noise injection into the device.
ELECTRICAL CHARACTERISTCS
(Vcc=12V±10%, TJ=0°C to 70°C unless otherwise specified)
Symbol
Parameter
Test Condition
Vcc SUPPLY CURRENT
ICC
ICCDR
IBOOTx
Vcc supply current
VCCDR supply current
Boot supply current
POWER-ON
HGATEx and LGATEx open
VCCDR=VBOOT=12V
LGATEx open; VCCDR=12V
HGATEx open; PHASEx to
PGND
VCC=VBOOT=12V
Turn-On VCC threshold
Turn-Off VCC threshold
Turn-On VCCDR Threshold
Turn-Off VCCDR Threshold
OSCILLATOR AND INHIBIT
VCC Rising; VCCDR=5V
VCC Falling; VCCDR=5V
VCCDR Rising; VCC=12V
VCCDR Falling; VCC=12V
fOSC
Initial Accuracy
OSC = OPEN
OSC = OPEN; Tj=0°C to 125°C
fOSC,Rosc Total Accuracy
RT to GND=74kΩ
∆Vosc Ramp Amplitude
dMAX Maximum duty cycle
OSC = OPEN
INH
Inhibit threshold
ISINK=5mA
REFERENCE AND DAC only for L6918A (MASTER)
VPROG_OUT Reference Voltage
Accuracy
VID0 to VID4 see Table1
IDAC
VID pull-up Current
VID pull-up Voltage
VIDx = GND
VIDx = OPEN
ERROR AMPLIFIER
DC Gain
SR
Slew-Rate
COMP=10pF
Offset
DIFFERENTIAL AMPLIFIER (REMOTE BUFFER) only for L6918 (SLAVE)
DC Gain
CMRR Common Mode Rejection Ratio
Input Offset
DIFFERENTIAL CURRENT SENSING
FBR=1.100V to1.850V;
FBG=GND
IISEN1,
IISEN2
Bias Current
ILOAD = 0%
Min.
7.5
2
0.5
7.8
6.5
4.2
4.0
278
270
450
45
0.8
-0.6
4
3.1
-7
-12
45
Typ.
10
3
1
9
7.5
4.4
4.2
300
500
2
50
0.85
-
5
-
80
15
1
40
50
Max. Unit
12.5 mA
4
mA
1.5
mA
10.2
V
8.5
V
4.6
V
4.4
V
322 kHz
330 kHz
550 kHz
V
-
%
0.9
V
0.6
%
6
µA
3.4
V
dB
V/µS
7
mV
V/V
dB
12
mV
55
µA
7/35
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