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参数资料
| 型号： | HIP6004ECVZ |
| 厂商： | INTERSIL CORP |
| 元件分类： | 稳压器 |
| 英文描述： | Buck and Synchronous-Rectifier (PWM) Controller and Output Voltage Monitor |
| 中文描述： | SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封装： | PLASTIC, TSSOP-20 |
| 文件页数： | 6/13页 |
| 文件大小： | 504K |
| 代理商： | HIP6004ECVZ |
6
The overcurrent function cycles the soft-start function in a
hiccup mode to provide fault protection. A resistor (R
OCSET
)
programs the overcurrent trip level. An internal 200
μ
A current
sink develops a voltage across R
OCSET
that is referenced to
V
IN
. When the voltage across the upper MOSFET (also
referenced to V
IN
) exceeds the voltage across R
OCSET
, the
overcurrent function initiates a soft-start sequence. The soft-
start function discharges C
SS
with a 10
μ
A current sink and
inhibits PWM operation. The soft-start function recharges
C
SS
, and PWM operation resumes with the error amplifier
clamped to the SS voltage. Should an overload occur while
recharging C
SS
, the soft-start function inhibits PWM operation
while fully charging C
SS
to 4V to complete its cycle. Figure 4
shows this operation with an overload condition. Note that the
inductor current increases to over 15A during the C
SS
charging interval and causes an overcurrent trip. The
converter dissipates very little power with this method. The
measured input power for the conditions of Figure 4 is 2.5W.
The overcurrent function will trip at a peak inductor current
(I
PEAK)
determined by:
where I
OCSET
is the internal OCSET current source (200
μ
A
typical). The OC trip point varies mainly due to the
MOSFET’s r
DS(ON)
variations. To avoid overcurrent tripping
in the normal operating load range, find the R
OCSET
resistor
from the equation above with:
1. The maximum r
DS(ON)
at the highest junction temperature.
2. The minimum I
OCSET
from the specification table.
3. Determine I
PEAK
for
where
I is the output inductor ripple current.
For an equation for the ripple current see the section under
component guidelines titled “Output Inductor Selection”.
,
A small, ceramic capacitor should be placed in parallel with
R
OCSET
to smooth the voltage across R
OCSET
in the
presence of switching noise on the input voltage.
Output Voltage Program
The output voltage of a HIP6004E converter is programmed to
discreet levels between 1.05V
DC
and 1.825V
DC
. The voltage
identification (VID) pins program an internal voltage reference
(DACOUT) with a TTL-compatible 5-bit digital-to-analog
converter (DAC). The level of DACOUT also sets the PGOOD
and OVP thresholds. Table 1 specifies the DACOUT voltage
for the 32 different combinations of connections on the VID
pins. The output voltage should not be adjusted while the
converter is delivering power. Remove input power before
changing the output voltage. Adjusting the output voltage
during operation could toggle the PGOOD signal and exercise
the overvoltage protection.
Application Guidelines
Layout Considerations
As in any high frequency switching converter, layout is very
important. Switching current from one power device to another
can generate voltage transients across the impedances of the
interconnecting bond wires and circuit traces. These
interconnecting impedances should be minimized by using
wide, short-printed circuit traces. The critical components
should be located as close together as possible, using ground
plane construction or single point grounding.
O
S
0A
0V
TIME (20ms/DIV.)
5A
10A
15A
2V
4V
FIGURE 4. OVER-CURRENT OPERATION
I
PEAK
I
x R
DS ON
(
)
----------------------------------------------------
=
I
PEAK
I
OUT MAX
)
I
(
)
2
+
>
TABLE 1. OUTPUT VOLTAGE PROGRAM
PIN NAME
NOMINAL OUTPUT
VOLTAGE DACOUT
1.050
1.075
1.100
1.125
1.150
1.175
1.200
1.225
1.250
1.275
PIN NAME
NOMINAL OUTPUT
VOLTAGE DACOUT
1.450
1.475
1.500
1.525
1.550
1.575
1.600
1.625
1.650
1.675
VID25
mV
0
1
0
1
0
1
0
1
0
1
VID3
0
0
0
0
0
0
0
0
0
0
VID2
1
1
0
0
0
0
0
0
0
0
VID1
0
0
1
1
1
1
0
0
0
0
VID0
0
0
1
1
0
0
1
1
0
0
VID25
mV
0
1
0
1
0
1
0
1
0
1
VID3
1
1
1
1
1
1
1
1
1
1
VID2
1
1
0
0
0
0
0
0
0
0
VID1
0
0
1
1
1
1
0
0
0
0
VID0
0
0
1
1
0
0
1
1
0
0
HIP6004E
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|---|---|
| HIP6004E | Buck and Synchronous-Rectifier (PWM) Controller and Output Voltage Monitor |
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| HIP6013 | FPGA - 100000 SYSTEM GATE 2.5 VOLT - NOT RECOMMENDED for NEW DESIGN |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| HIP6004ECVZ-T | 功能描述:电压模式 PWM 控制器 20LD BUCK&SYNCHCT PWMCONOUTPUT RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| HIP6004EVAL1 | 功能描述:EVALUATION BOARD HIP6004 RoHS:否 类别:编程器，开发系统 >> 过时/停产零件编号 系列:- 标准包装:1 系列:- 传感器类型:CMOS 成像，彩色（RGB） 传感范围:WVGA 接口:I²C 灵敏度:60 fps 电源电压:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相关产品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP |
| HIP6004EVAL3 | 功能描述:电源管理IC开发工具 EMBEDDED EVAL BRD SYNC BUCK/KLAM RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| HIP6005 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Buck Pulse-Width Modulator (PWM) Controller and Output Voltage Monitor |
| HIP6005A | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Buck Pulse-Width Modulator (PWM) Controller and Output Voltage Monitor |
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