- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384422 > HIP6004CB (HARRIS SEMICONDUCTOR) Buck and Synchronous-Rectifier (PWM) Controller and Output Voltage Monitor PDF資料下載
參數(shù)資料
| 型號(hào)： | HIP6004CB |
| 廠商： | HARRIS SEMICONDUCTOR |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Buck and Synchronous-Rectifier (PWM) Controller and Output Voltage Monitor |
| 中文描述： | SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO20 |
| 文件頁數(shù)： | 6/12頁 |
| 文件大?。?/td> | 211K |
| 代理商： | HIP6004CB |
6
referenced to V
IN
) exceeds the voltage across R
OCSET
, the
over-current 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 over-current trip. The converter dissipates very
little power with this method. The measured input power for the
conditions of Figure 4 is 2.5W.
The over-current 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 MOSFETs
r
DS(ON)
variations. To avoid over-current 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 HIP6004 converter is programmed
to discrete levels between 1.3V
DC
and 3.5V
DC
. The
voltage identification (VID) pins program an internal voltage
reference (DACOUT) with a 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 combinations of open or short 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.
The DAC function is a precision non-inverting summation
amplifier shown in Figure 5. The resistor values shown are
only approximations of the actual precision values used.
Grounding any combination of the VID pins increases the
DACOUT voltage. The ‘open’ circuit voltage on the VID pins
is the band gap reference voltage, 1.26V.
I
PEAK
I
---------------------------------------------------
R
DS ON
(
)
=
I
I
I
(
)
2
+
>
TABLE 1. OUTPUT VOLTAGE PROGRAM
PIN NAME
NOMINAL
OUTPUT
VOLTAGE
DACOUT
PIN NAME
NOMINAL
OUTPUT
VOLTAGE
DACOUT
VID4
VID3
VID2
VID1
VID0
VID4
VID3
VID2
VID1
VID0
0
1
1
1
1
1.30
1
1
1
1
1
2.0
0
1
1
1
0
1.35
1
1
1
1
0
2.1
0
1
1
0
1
1.40
1
1
1
0
1
2.2
0
1
1
0
0
1.45
1
1
1
0
0
2.3
0
1
0
1
1
1.50
1
1
0
1
1
2.4
0
1
0
1
0
1.55
1
1
0
1
0
2.5
0
1
0
0
1
1.60
1
1
0
0
1
2.6
0
1
0
0
0
1.65
1
1
0
0
0
2.7
0
0
1
1
1
1.70
1
0
1
1
1
2.8
0
0
1
1
0
1.75
1
0
1
1
0
2.9
0
0
1
0
1
1.80
1
0
1
0
1
3.0
0
0
1
0
0
1.85
1
0
1
0
0
3.1
0
0
0
1
1
1.90
1
0
0
1
1
3.2
0
0
0
1
0
1.95
1
0
0
1
0
3.3
0
0
0
0
1
2.00
1
0
0
0
1
3.4
0
0
0
0
0
2.05
1
0
0
0
0
3.5
NOTE: 0 = connected to GND or V
SS
, 1 = OPEN.
HIP6004
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HIP6005A | Buck Pulse-Width Modulator (PWM) Controller and Output Voltage Monitor(脈沖帶寬調(diào)節(jié)控制和輸出電壓檢測電路) |
| HIP6005ACB | Buck Pulse-Width Modulator (PWM) Controller and Output Voltage Monitor |
| HIP6005B | Buck Pulse-Width Modulator (PWM) Controller and Output Voltage Monitor |
| HIP6005BCB | Buck Pulse-Width Modulator (PWM) Controller and Output Voltage Monitor |
| HIP6005BCV | Buck Pulse-Width Modulator (PWM) Controller and Output Voltage Monitor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HIP6004CB WAF | 制造商:Harris Corporation 功能描述: |
| HIP6004CBR4543 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| HIP6004CB-T | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| HIP6004CBTS | 制造商:HARRIS 功能描述:* |
| HIP6004D | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Buck and Synchronous-Rectifier (PWM) Controller and Output Voltage Monitor |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。