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Application Note 9906
make substitutions, or even replace the provided on-board
GND>
VCORE
capacitors altogether. Similarly, many of the ceramic
capacitors can be replaced, varying the quantity and the mix,
thus shaping the high-frequency dynamic response to fit
certain required envelope.
Tailoring Circuit Performance
As delivered, the evaluation board is optimized for the
maximum current of 55A. In this configuration, the circuit
represents a finite design point, exhibiting a characteristic
0A>
I L4
I L3
I L2
blend of functionality, performance, and cost. Various trade-
offs can be made to enhance the circuit with emphasis on
one parameter, most times with negative results on others.
For output currents below 55A, typical modifications relate to
20 μ s/DIV.
T0 T1 T4
FIGURE 7. HIP6301EVAL2 SHORT-CIRCUIT PROTECTION
SHUTDOWN
Figure 8 details the hiccup mode the converter resorts to in
case of a persisting output short-circuit condition. At time T0
the first short-circuit condition is encountered and the
converter shuts down. After a wait period of about 2200
switching cycles (about 11ms), the converter attempts to re-
start, soft-starting the output at time T1. As a result, the
output voltage increases to the point where the current
drawn by the short-circuit trips, again, the over-current
protection. The cycle repeats ad libitum for as long as the
short-circuit is applied to the converter’s output.
VCORE
GND>
cost reductions in the circuit’s bill of materials. Popular
changes include using slightly higher r DS(ON) MOSFETs,
downgrading (using higher ESR types) the output
capacitors, reducing the number/mix of output high-
frequency decoupling, etc. Significantly lower current
applications may prompt more drastic circuit changes, such
as disablement of one of the three phases. For such
applications (typically requiring less than 36A), we
recommend considering evaluating dedicated 2-phase
circuits.
Conclusion
The HIP6301EVAL2 evaluation board is a flexible tool
designed to showcase the operation of a 3-phase
synchronous buck switching converter built using Intersil
HIP6301 Multiphase Buck PWM Controller and the
HIP6601A Synchronous Buck MOSFET drivers. The
controller-drivers combination has the necessary application
flexibility to address custom-tailored solutions supporting
existing, as well as near-future microprocessor offerings.
References
For Intersil documents available on the internet, see web site
www.intersil.com/
Intersil Technical Support 1 (888) INTERSIL
[1] HIP6301 Data Sheet, Intersil Corporation,
Power Management Products Division, FN4765.
(www.intersil.com/)
0A>
I L2
I L3
I L4
[2] HIP6601A Data Sheet, Intersil Corporation,
Power Management Products Division, FN4884.
2ms/DIV.
T0
T1
T2
FIGURE 8. HIP6301EVAL2 SHORT-CIRCUIT PROTECTION
HICCUP MODE
HIP6301EVAL2 Modifications
Output Voltage Transient Response
The evaluation board has some additional capacitor
footprints (C81-90) made available for various experiments.
These footprints can be used to add output capacitance,
4
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相关代理商/技术参数
HIP6301V 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
HIP6301VCB 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-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
HIP6301VCBZ-T 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