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参数资料
| 型号： | HIP6311CB |
| 厂商： | Intersil |
| 文件页数： | 10/17页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM 20-SOIC |
| 标准包装： | 38 |
| PWM 型： | 控制器 |
| 输出数： | 4 |
| 频率 - 最大： | 305kHz |
| 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： | 0°C ~ 70°C |
| 封装/外壳： | 20-SOIC（0.295"，7.50mm 宽） |
| 包装： | 管件 |
HIP6311
back through the lower MOSFETs, avoiding a possibly
destructive ringing of the capacitors and output inductors. If
the conditions that caused the over-voltage still persist, the
PWM outputs will be cycled between three state and V CORE
clamped to ground, as a hysteretic shunt regulator.
Under-Voltage
The VSEN pin also detects when the CORE voltage falls more
than 10% below the VID programmed level. This causes
PGOOD to go low, but has no other effect on operation and is
not latched. There is also hysteresis in this detection point.
CORE Voltage Programming
The voltage identification pins (VID0, VID1, VID3, and VID4)
set the CORE output voltage. Each VID pin is pulled to V CC
by an internal 20 μ A current source and accepts open-
collector/open-drain/open-switch-to-ground or standard low-
voltage TTL or CMOS signals.
Table 1 shows the nominal DAC voltage as a function of the
VID codes. The power supply system is ± 0.8% accurate over
the operating temperature and voltage range.
Over-Current
In the event of an over-current condition, the over-current
protection circuit reduces the average current delivered to
VID4
1
TABLE 1. VOLTAGE IDENTIFICATION CODES
VID3 VID2 VID1 VID0
1 1 1 1
VDAC
Off
less than 25% of the current limit. When an over-current
condition is detected, the controller forces all PWM outputs
into a three state mode. This condition results in the gate
driver removing drive to the output stages.The HIP6311 goes
into a wait delay timing cycle that is equal to the Soft-Start
ramp time. PGOOD also goes “low” during this time due to
VSEN going below its threshold voltage.To lower the
average output dissipation, the Soft-Start initial wait time is
increased from 32 to 2048 cycles, then the Soft-Start ramp is
initiated. At a PWM frequency of 200kHz, for instance, an
over-current detection would cause a dead time of 10.24ms,
then a ramp of 10.08ms.
At the end of the delay, PWM outputs are restarted and the
Soft-Start ramp is initiated. If a short is present at that time,
the cycle is repeated. This is the hiccup mode.
Figure 6 shows the supply shorted under operation and the
hiccup operating mode described above. Note that due to
the high short circuit current, over-current is detected before
completion of the start-up sequence so the delay is not quite
as long as the normal Soft-Start cycle.
SHORT APPLIED HERE
PGOOD
SHORT
CURRENT
50A/Div
HICCUP MODE. SUPPLY POWERED BY ATX SUPPLY
CORE LOAD CURRENT = 31A, 5V LOAD = 5A
SUPPLY FREQUENCY = 200kHz, V IN = 12V
ATX SUPPLY ACTIVATED BY ATX “PS-ON PIN”
FIGURE 6. SHORT APPLIED TO SUPPLY AFTER POWER-UP
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1.100
1.125
1.150
1.175
1.200
1.225
1.250
1.275
1.300
1.325
1.350
1.375
1.400
1.425
1.450
1.475
1.500
1.525
1.550
1.575
1.600
1.625
1.650
1.675
1.700
1.725
1.750
1.775
1.800
1.825
1.850
10
FN4817.3
December 27, 2004
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| HIP6311CB-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) |
| HIP6311CBZ | 功能描述:电流型 PWM 控制器 2-4 PHS SYNCH BUCK CNTRLR 0 8%F 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 |
| HIP6311CBZA | 功能描述:电流型 PWM 控制器 W/ANL 2-4 PHS SYNCH BUCK CNTRLR 0 8%F 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 |
| HIP6311CBZA-T | 功能描述:电流型 PWM 控制器 W/ANL 2-4 PHS SYNCH BUCK CNTRLR 0 8%F 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 |
| HIP6311CBZ-T | 功能描述:电流型 PWM 控制器 2-4 PHS SYNCH BUCK CNTRLR 0 8%REF TAPE 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 |
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