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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： | 5/13页 |
| 文件大小： | 504K |
| 代理商： | HIP6004ECVZ |
5
PGND (Pin 16)
This is the power ground connection. Tie the lower MOSFET
source to this pin.
LGATE (Pin 17)
Connect LGATE to the lower MOSFET gate. This pin
provides the gate drive for the lower MOSFET.
VCC (Pin 18)
Provide a 12V bias supply for the chip to this pin.
OVP (Pin 19)
The OVP pin can be used to drive an external SCR in the
event of an overvoltage condition. Output rising 15% more
than the DAC-set voltage triggers a high output on this pin
and disables PWM gate drive circuitry.
RT (Pin 20)
This pin provides oscillator switching frequency adjustment.
By placing a resistor (R
T
) from this pin to GND, the nominal
200kHz switching frequency is increased according to the
following equation:
Conversely, connecting a pull-up resistor (R
T
) from this pin to
V
CC
reduces the switching frequency according to the
following equation:
RT pin has a constant voltage of 1.26V typically.
Functional Description
Initialization
The HIP6004E automatically initializes upon receipt of power.
Special sequencing of the input supplies is not necessary. The
Power-On Reset (POR) function continually monitors the input
supply voltages. The POR monitors the bias voltage at the VCC
pin and the input voltage (V
IN
) on the OCSET pin. The level on
OCSET is equal to V
IN
less a fixed voltage drop (see over-
current protection). The POR function initiates soft-start
operation after both input supply voltages exceed their POR
thresholds. For operation with a single +12V power source, V
IN
and V
CC
are equivalent and the +12V power source must
exceed the rising VCC threshold before POR initiates operation.
Soft Start
The POR function initiates the soft-start sequence. An internal
10
μ
A current source charges an external capacitor (C
SS
) on
the SS pin to 4V. Soft start clamps the error amplifier output
(COMP pin) and reference input (+ terminal of error amp) to the
SS pin voltage. Figure 3 shows the soft-start interval with
C
SS
= 0.1
μ
F. Initially the clamp on the error amplifier (COMP
pin) controls the converter’s output voltage. At t
1
in Figure 3, the
SS voltage reaches the valley of the oscillator’s triangle wave.
The oscillator’s triangular waveform is compared to the ramping
error amplifier voltage. This generates PHASE pulses of
increasing width that charge the output capacitor(s). This
interval of increasing pulse width continues to t
2
. With sufficient
output voltage, the clamp on the reference input controls the
output voltage. This is the interval between t
2
and t
3
in Figure 3.
At t
3
the SS voltage exceeds the DACOUT voltage and the
output voltage is in regulation. This method provides a rapid
and controlled output voltage rise. The PGOOD signal toggles
‘high’ when the output voltage (VSEN pin) is within
±
10% of
DACOUT. The 2% hysteresis built into the power good
comparators prevents PGOOD oscillation due to nominal
output voltage ripple.
Overcurrent Protection
The overcurrent function protects the converter from a shorted
output by using the upper MOSFET’s on-resistance, r
DS(ON)
to monitor the current. This method enhances the converter’s
efficiency and reduces cost by eliminating a current sensing
resistor.
Fs
200kHz
6
T
)
--------------------
+
≈
(R
T
to GND)
Fs
200kHz
7
T
)
--------------------
–
≈
(R
T
to 12V)
0V
0V
0V
TIME (5ms/DIV.)
SOFT-START
(1V/DIV.)
OUTPUT
VOLTAGE
(1V/DIV.)
t
2
t
3
PGOOD
(2V/DIV.)
t
1
FIGURE 3. SOFT START INTERVAL
HIP6004E
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| 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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