Datasheet.kr   

L6918DTR 데이터시트 PDF




STMicroelectronics에서 제조한 전자 부품 L6918DTR은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


PDF 형식의 L6918DTR 자료 제공

부품번호 L6918DTR 기능
기능 5 BIT PROGRAMMABLE MULTIPHASE CONTROLLER
제조업체 STMicroelectronics
로고 STMicroelectronics 로고


L6918DTR 데이터시트 를 다운로드하여 반도체의 전기적 특성과 매개변수에 대해 알아보세요.



전체 30 페이지수

미리보기를 사용할 수 없습니다

L6918DTR 데이터시트, 핀배열, 회로
L6918 L6918A
5 BIT PROGRAMMABLE MULTIPHASE CONTROLLER
s OUTPUT CURRENT IN EXCESS OF 100A
s ULTRA FAST LOAD TRANSIENT RESPONSE
s REMOTE SENSE BUFFER
s INTEGRATED 2A GATE DRIVERS
s 5 BIT VID VOLTAGE POSITIONING, VRM 9.0
s 0.6% INTERNAL REFERENCE ACCURACY
s DIGITAL 2048 STEP SOFT-START
s OVP & OCP PROTECTIONS
s Rdson or Rsense CURRENT SENSING
s 1200KHz EFFECTIVE SWITCHING
FREQUENCY, EXTERNALLY ADJUSTABLE
s POWER GOOD OUTPUT AND INHIBIT
s PACKAGE: SO28
APPLICATIONS
s HIGH DENSITY DC-DC FOR SERVERS AND
WORKSTATIONS
s SUPPLY FOR HIGH CURRENT
MICROPROCESSORS
s DISTRIBUTED POWER
PIN CONNECTIONS
SO28
ORDERING NUMBERS: L6918D, L6918AD
L6918DTR, L6918ADTR
DESCRIPTION
L6918A is a master device that it has to be combined
with the L6918,slave, realizing a 4-phases topology,
interleaved. The device kit is specifically designed to
provide a high performance/high density DC/DC con-
version for high current microprocessors and distrib-
uted power. Each device implements a dual-phase
step-down controller with a 180° phase-shift between
each phase.
A precise 5-bit DAC allows adjusting the output volt-
age from 1.100V to 1.850V with 25mV binary steps.
The high peak current gate drives affords to have
high system switching frequency, typically of
1200KHz, and higher by external adjustement.
The device kit assure a fast protection against OVP,
UVP and OCP. An internal crowbar, by turning on the
low side mosfets, eliminates the need of external pro-
tection. In case of over-current, the system works in
Constant Current mode.
LGATE1
VCCDR
PHASE1
UGATE1
BOOT1
VCC
SGND
COMP
FB
VPROG_OUT
SYNC_OUT
SLAVE_OK
ISEN1
PGNDS1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
October 2002
28 PGND
LGATE1
1
27 LGATE2
VCCDR
2
26 PHASE2
PHASE1
3
25 UGATE2
UGATE1
4
24 BOOT2
BOOT1
5
23 PGOOD
VCC
6
22 VID4
SGND
7
21 VID3
COMP
8
20 VID2
FB 9
19 VID1
VSEN
10
18 VID0
FBR 11
17 OSC / INH / FAULT
FBG
12
16 ISEN2
ISEN1
13
15 PGNDS2
PGNDS1
14
28 PGND
27 LGATE2
26 PHASE2
25 UGATE2
24 BOOT2
23 PGOOD
22 VPROG_IN
21 SYNC_IN
20 SLAVE_OK
19 SYNC / ADJ
18 SYNC_OUT
17 OSC / INH / FAULT
16 ISEN2
15 PGNDS2
1/35




L6918DTR pdf, 반도체, 판매, 대치품
L6918 L6918A
L6918A (MASTER) PIN FUNCTION (continued)
N. Name
Description
13
ISEN1
Channel 1 current sense pin. The output current may be sensed across a sense resistor or
across the low-side mosfet RdsON. This pin has to be connected to the low-side mosfet drain
or to the sense resistor through a resistor Rg in order to program the current intervention for
each phase at 140% as follow:
IO C P x
=
3----5----µ---A---------R-----g-
Rsense
Where 35µA is the current offset information relative to the Over Current condition (offset at
OC threshold minus offset at zero load).The net connecting the pin to the sense point must be
routed as close as possible to the PGNDS1 net in order to couple in common mode any
picked-up noise.
14 PGNDS1 Channel 1 Power Ground sense pin. The net connecting the pin to the sense point must be routed as
close as possible to the ISEN1 net in order to couple in common mode any picked-up noise.
15 PGNDS2 Channel 2 Power Ground sense pin. The net connecting the pin to the sense point must be
routed as close as possible to the ISEN2 net in order to couple in common mode any picked-
up noise.
16
ISEN2
Channel 2 current sense pin. The output current may be sensed across a sense resistor or
across the low-side mosfet RdsON. This pin has to be connected to the low-side mosfet drain
or to the sense resistor through a resistor Rg in order to program the current intervention for
each phase at 140% as follow:
IOCPx = 3----5-R---µ-s--A-e---n---s--R-e----g-
Where 35µA is the current offset information relative to the Over Current condition (offset at
OC threshold minus offset at zero load).
The net connecting the pin to the sense point must be routed as close as possible to the
PGNDS2 net in order to couple in common mode any picked-up noise.
17 OSC/INH Oscillator switching frequency pin. Connecting an external resistor from this pin to GND, the
FAULT
external frequency is increased according to the equation:
fS = 300KHz + R-1---4-O---.-S8---2C----(---K-1----0---6-)-
Connecting a resistor from this pin to Vcc (12V), the switching frequency is reduced according
to the equation:
fS = 300KHz + R-1---2-O---.-S9---1C----(---K-1----0---7-)-
If the pin is not connected, the switching frequency is 300KHz.
Forcing the pin to a voltage lower than 0.8V, the device stop operation and enter the inhibit
state; all mosfets are turned OFF.
18 VID0-4 Voltage Identification pins. These input are internally pulled-up and TTL compatible. They are
to used to program the output voltage as specified in Table 1 and to set the over voltage and
22 power good thresholds.
Connect to GND to program a ‘0’ while leave floating to program a ‘1’.
23 PGOOD This pin is an open collector output and is pulled low if the output voltage is not within the
above specified thresholds. It must be connected with the Slave’s PGOOD pin.
If not used may be left floating.
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.
4/35

4페이지










L6918DTR 전자부품, 판매, 대치품
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=74k
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

7페이지


구       성 총 30 페이지수
다운로드[ L6918DTR.PDF 데이터시트 ]

당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는

포괄적인 데이터시트를 제공합니다.


구매 문의
일반 IC 문의 : 샘플 및 소량 구매
-----------------------------------------------------------------------

IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한
광범위한 전력 반도체를 판매합니다.

전력 반도체 전문업체

상호 : 아이지 인터내셔날

사이트 방문 :     [ 홈페이지 ]     [ 블로그 1 ]     [ 블로그 2 ]



관련 데이터시트

부품번호상세설명 및 기능제조사
L6918DTR

5 BIT PROGRAMMABLE MULTIPHASE CONTROLLER

STMicroelectronics
STMicroelectronics

DataSheet.kr       |      2020   |     연락처      |     링크모음      |      검색     |      사이트맵