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參數(shù)資料
| 型號： | HIP6303CB-T |
| 廠商： | INTERSIL CORP |
| 元件分類： | 穩(wěn)壓器 |
| 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 |
| 封裝： | PLASTIC, MS-013AC, SOIC-20 |
| 文件頁數(shù)： | 9/17頁 |
| 文件大?。?/td> | 195K |
| 代理商： | HIP6303CB-T |
9
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 HIP6303. 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 HIP6303 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 HIP6303 will sense an over-current
condition due to charging the output capacitors. The supply
will then restart and go through the normal Soft-Start cycle.
Fault Protection
The HIP6303 protects the microprocessor and the entire
power system from damaging stress levels. Within the
HIP6303 both Over-Voltage and Over-Current circuits are
incorporated to protect the load and regulator.
Over-Voltage
The VSEN pin is connected to the microprocessor CORE
voltage. A CORE over-voltage condition is detected when
the VSEN pin goes more than 15% above the programmed
VID level.
The over-voltage condition is latched, disabling normal PWM
operation, and causing PGOOD to go low. The latch can
only be reset by lowering and returning V
CC
high to initiate a
POR and Soft-Start sequence.
During a latched over-voltage, the PWM outputs will be
driven either low or three state, depending upon the VSEN
input. PWM outputs are driven low when the VSEN pin
detects that the CORE voltage is 15% above the
programmed VID level. This condition drives the PWM
outputs low, resulting in the lower or synchronous rectifier
PWM 1
OUTPUT
PGOOD
V
CORE
5V
V
CC
V
IN
= 12V
DELAY TIME
FIGURE 3. START-UP OF 4 PHASE SYSTEM OPERATING AT
500kHz
PGOOD
V
CORE
5V
V
CC
V COMP
V
IN
= 12V
DELAY TIME
FIGURE 4. START-UP OF 4 PHASE SYSTEM OPERATING AT
200kHz
12V ATX
SUPPLY
PGOOD
5 V ATX
SUPPLY
V
CORE
ATX SUPPLY ACTIVATED BY ATX “PS-ON PIN”
V
IN
= 5V, CORE LOAD CURRENT = 31A
FREQUENCY 200kHZ
FIGURE 5. SUPPLY POWERED BY ATX SUPPLY
HIP6303
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HIP6303 | Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller(微處理器核心電壓穩(wěn)壓多相沖跳脈寬調(diào)制控制器) |
| HIP6303CB | Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller |
| HIP6303EVAL1 | Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller |
| HIP6304CB-T | Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller |
| HIP6304 | Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller(微處理器核心電壓穩(wěn)壓器多相PWM控制電路) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HIP6303EVAL1 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller |
| HIP6304 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller |
| HIP6304 WAF | 制造商:Intersil Corporation 功能描述: |
| HIP6304CB | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Intersil Corporation 功能描述: |
| HIP6304CB-T | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel 制造商:Intersil Corporation 功能描述: |
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