参数资料
型号: IR3088AMTR
厂商: International Rectifier
英文描述: XPHASETM PHASE IC WITH FAULT AND OVERTEMP DETECT
中文描述: XPHASETM相集成电路及超温故障检测
文件页数: 23/34页
文件大小: 1264K
代理商: IR3088AMTR
IR3088A
Body Braking Related Resistors
R
BBFB
and
R
BBDRP
N/A. The body braking during Dynamic VID is disabled.
IR3088A EXTERNAL COMPONENTS
PWM Ramp Resistor
R
PWMRMP
and Capacitor C
PWMRMP
Set PWM ramp magnitude V
PWMRMP
=0.8V. Choose 220pF for PWM ramp capacitor C
PWMRMP
, and calculate the
resistor R
PWMRMP
,
V
R
33
.
12
3
)]
ln(
)
[ln(
PWMRMP
V
DAC
V
IN
DAC
V
IN
PWMRMP
SW
IN
O
PWMRMP
V
V
C
f
V
=
=
=
k
1
16
)]
8
35
.
12
ln(
)
35
.
12
[ln(
10
*
220
10
*
400
12
, choose R
PWMRMP
=16.2k
Inductor Current Sensing Capacitor
C
CS+
and Resistors
R
CS+
and
R
CS-
Choose C
CS+
=47nF, and calculate R
CS+,
R
L
R
CS
10
*
47
The bias currents of CSIN+ and CSIN- are 0.25uA and 0.4uA respectively. Calculate resistor R
CS-
,
=
=
+
k
R
R
CS
CS
0
10
Over Temperature Setting Resistors
R
HOTSET1
and
R
HOTSET2
Use central over-temperature setting and set the temperature threshold at 115 oC, which corresponds to the IC die
temperature of 116 oC. Calculate the HOTSET threshold voltage corresponding to the temperature thresholds.
T
V
J
HOTSET
.
241
.
116
10
*
73
.
241
.
*
10
*
73
.
=
+
=
+
=
Pre-select R
HOTSET1
=10.0k
,
=
V
V
HOTSET
BIAS
79
.
8
Phase Delay Timing Resistors
R
PHASE1
and
R
PHASE2
Use central over temperature setting and set the temperature threshold at 115 oC, which corresponds to the IC die
temperature of 116 oC. Calculate the HOTSET threshold voltage corresponding to the temperature thresholds.
The phase delay resistor ratios for phases 1 to 6 at 400kHz of switching frequencies are RA
PHASE1
=0.628,
RA
PHASE2
=0.415, RA
PHASE3
=0.202, RA
PHASE4
=0.246, RA
PHASE5
=0.441 and RA
PHASE6
=0.637 starting from down-
slope. Pre-select R
PHASE11
=R
PHASE21
=R
PHASE31
=R
PHASE41
=R
PHASE51
= R
PHASE61
=10k
,
RA
R
PHASE
PHASE
628
.
1
1
1
R
PHASE22
=7.15k
, R
PHASE32
=2.55k
, R
PHASE42
=3.24k
, P
PHASE52
=7.87k
, R
PHASE62
=17.4k
=
=
=
+
+
k
C
L
CS
0
10
)
10
*
47
9
.
/(
10
*
220
3
9
V
79
3
3
=
=
k
V
R
R
HOTSET
HOTSET
HOTSET
57
.
79
.
10
*
10
3
1
2
=
=
=
k
R
RA
PHASE
PHASE
9
16
10
*
10
628
.
3
11
1
12
Page 23 of 34
9/30
/04
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IR3088MPBF 功能描述:IC CONTROLLER PHASE 20L-MLPQ RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:XPhase™ 应用说明:Ultrasound Imaging Systems Application Note 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:37 系列:- 应用:医疗用超声波成像,声纳 电流 - 电源:- 电源电压:2.37 V ~ 6 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:56-WFQFN 裸露焊盘 供应商设备封装:56-TQFN-EP(8x8) 包装:管件
IR3088MTR 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE PHASE IC WITH FAULT AND OVERTEMP DETECT