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L6918DTR データシート(PDF) 7 Page - STMicroelectronics

部品番号 L6918DTR
部品情報  5 BIT PROGRAMMABLE MULTIPHASE CONTROLLER
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6918DTR データシート(HTML) 7 Page - STMicroelectronics

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L6918 L6918A
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
Min.
Typ.
Max.
Unit
Vcc SUPPLY CURRENT
ICC
Vcc supply current
HGATEx and LGATEx open
VCCDR=VBOOT=12V
7.5
10
12.5
mA
ICCDR
VCCDR supply current
LGATEx open; VCCDR=12V
2
3
4
mA
IBOOTx
Boot supply current
HGATEx open; PHASEx to
PGND
VCC=VBOOT=12V
0.5
1
1.5
mA
POWER-ON
Turn-On VCC threshold
VCC Rising; VCCDR=5V
7.8
9
10.2
V
Turn-Off VCC threshold
VCC Falling; VCCDR=5V
6.5
7.5
8.5
V
Turn-On VCCDR Threshold
VCCDR Rising; VCC=12V
4.2
4.4
4.6
V
Turn-Off VCCDR Threshold
VCCDR Falling; VCC=12V
4.0
4.2
4.4
V
OSCILLATOR AND INHIBIT
fOSC
Initial Accuracy
OSC = OPEN
OSC = OPEN; Tj=0
°C to 125°C
278
270
300
322
330
kHz
kHz
fOSC,Rosc
Total Accuracy
RT to GND=74kΩ
450
500
550
kHz
∆Vosc
Ramp Amplitude
2
V
dMAX
Maximum duty cycle
OSC = OPEN
45
50
-
%
INH
Inhibit threshold
ISINK=5mA
0.8
0.85
0.9
V
REFERENCE AND DAC only for L6918A (MASTER)
VPROG_OUT Reference Voltage
Accuracy
VID0 to VID4 see Table1
-0.6
-
0.6
%
IDAC
VID pull-up Current
VIDx = GND
4
5
6
µA
VID pull-up Voltage
VIDx = OPEN
3.1
-
3.4
V
ERROR AMPLIFIER
DC Gain
80
dB
SR
Slew-Rate
COMP=10pF
15
V/
µS
Offset
-7
7
mV
DIFFERENTIAL AMPLIFIER (REMOTE BUFFER) only for L6918 (SLAVE)
DC Gain
1V/V
CMRR
Common Mode Rejection Ratio
40
dB
Input Offset
FBR=1.100V to1.850V;
FBG=GND
-12
12
mV
DIFFERENTIAL CURRENT SENSING
IISEN1,
IISEN2
Bias Current
ILOAD = 0%
45
50
55
µA
L6918 (SLAVE) PIN FUNCTION (continued)
N.
Name
Description


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