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参数资料
| 型号： | HIP6301VCB |
| 厂商： | INTERSIL CORP |
| 元件分类： | 稳压器 |
| 英文描述： | Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller |
| 中文描述： | SWITCHING CONTROLLER, 1500 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封装： | PLASTIC, MS-013AC, SOIC-20 |
| 文件页数： | 10/20页 |
| 文件大小： | 518K |
| 代理商： | HIP6301VCB |
10
FN9034.2
December 27, 2004
For the first 32 PWM switching cycles, the DAC output
remains inhibited and the PWM outputs remain three stated.
From the 33rd cycle and for another, approximately 150 cycles
the PWM output remains low, clamping the lower output
MOSFETs to ground, see Figure 3. The time variability is due
to the error amplifier, sawtooth generator and comparators
moving into their active regions. After this short interval, the
PWM outputs are enabled and increment the PWM pulse
width from zero duty cycle to operational pulse width, thus
allowing the output voltage to slowly reach the CORE voltage.
The CORE voltage will reach its programmed value before the
2048 cycles, but the PGOOD output will not be initiated until
the 2048th PWM switching cycle.
The soft-start time or delay time, DT = 2048/F
SW
. For an
oscillator frequency, F
SW
, of 200kHz, the first 32 cycles or
160
μ
s, the PWM outputs are held in a three state level as
explained above. After this period and a short interval described
above, the PWM outputs are initiated and the voltage rises in
10.08ms, for a total delay time DT of 10.24ms.
Figure 3 shows the start-up sequence as initiated by a fast
rising 5V supply, V
CC,
applied to the controller. Note the
short rise to the three state level in PWM 1 output during first
32 PWM cycles.
Figure 4 shows the waveforms when the regulator is
operating at 200kHz. Note that the Soft-Start duration is a
function of the Channel Frequency as explained previously.
Also note the pulses on the COMP terminal. These pulses
are the current correction signal feeding into the comparator
input (see the Block Diagram on page 2).
Figure 5 shows the regulator operating from an ATX supply.
In this figure, note the slight rise in PGOOD as the 5V supply
rises.The PGOOD output stage is made up of NMOS and
PMOS transistors. On the rising V
CC
, the PMOS device
becomes active slightly before the NMOS transistor pulls
“down”, generating the slight rise in the PGOOD voltage.
Note that Figure 5 shows the 12V gate driver voltage
available before the 5V supply to the controller has reached
its threshold level. If conditions were reversed and the 5V
supply was to rise first, the start-up sequence would be
different. In this case the controller may sense an
overcurrent condition due to charging the output capacitors.
The supply would then restart and go through the normal
Soft-Start cycle.
Dynamic VID
The HIP6301V and HIP6302V require up to two full clock
cycles to detect a change in the VID code. VID code
changes that are not valid for at least two cycles may or may
not be detected. Once detected, the controller waits an
additional two-cycle wait period to be certain the change is
stable. After the two-cycle wait period, the DAC begins
stepping toward the new VID setting in 25mV increments.
The DAC makes one 25mV step every two clock cycles. For
PWM 1
OUTPUT
PGOOD
VCORE
5V
VCC
VIN = 12V
DELAY TIME
FIGURE 3. START-UP OF 4 PHASE SYSTEM OPERATING
AT 500kHz
PGOOD
VCORE
5V
VCC
V COMP
VIN = 12V
DELAY TIME
FIGURE 4. START-UP OF 4 PHASE SYSTEM OPERATING
AT 200kHz
12V ATX
SUPPLY
PGOOD
5 V ATX
SUPPLY
VCORE
ATX SUPPLY ACTIVATED BY ATX “PS-ON PIN”
VIN = 5V, CORE LOAD CURRENT = 31A
FREQUENCY 200kHz
FIGURE 5. SUPPLY POWERED BY ATX SUPPLY
HIP6301V, HIP6302V
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相关代理商/技术参数 |
参数描述 |
|---|---|
| HIP6301VCB-T | 功能描述:IC REG CTRLR BUCK PWM 20-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 占空比:66.7% 电源电压:4.75 V ~ 5.25 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 85°C 封装/外壳:40-VFQFN 裸露焊盘 包装:带卷 (TR) |
| HIP6301VCB-TS2490 | 制造商:Intersil Corporation 功能描述: |
| HIP6301VCBZ | 功能描述:电流型 PWM 控制器 MULTI-PHS CNTRLR VID ON THE FLYINTEL VID RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| HIP6301VCBZA | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller |
| HIP6301VCBZA-T | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller |
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