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参数资料
| 型号： | HIP6301VCBZ |
| 厂商： | Intersil |
| 文件页数： | 13/20页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM 20-SOIC |
| 标准包装： | 380 |
| PWM 型： | 控制器 |
| 输出数： | 4 |
| 频率 - 最大： | 336kHz |
| 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 |
HIP6301V, HIP6302V
RIN
RFB
Cc
FB
COMP
HIP6301V
VIN
ERROR
AMPLIFIER
-
SAWTOOTH
GENERATOR
CORRECTION
+
COMPARATOR
-
+
PWM
CIRCUIT
PWM
HIP6601
Q1
L01
IL
VCORE
+
-
Q2
PHASE
REFERENCE
DAC
DIFFERENCE
+
CURRENT
ISEN
RISEN
SENSING
-
ONLY ONE OUTPUT
TO OTHER
CHANNELS
AVERAGING
CURRENT
SENSING
FROM
OTHER
CHANNELS
STAGE SHOWN
INDUCTOR
CURRENT(S)
FROM
OTHER
TO
OVERCURRENT
TRIP
+
-
COMPARATOR
REFERENCE
CHANNELS
FIGURE 9. SIMPLIFIED FUNCTIONAL BLOCK DIAGRAM SHOWING CURRENT AND VOLTAGE SAMPLING
Current Sensing and Balancing
Overview
The HIP6301V and HIP6302V sample the on-state voltage
drop across each synchronous MOSFET, Q 2 , as an
indication of the inductor current in that phase, see Figure 9.
Neglecting AC effects (to be discussed later), the voltage
drop across Q 2 is simply r DS(ON) (Q 2 ) x inductor current (I L ).
Note that I L , the inductor current, is either 1/2, 1/3, or 1/4 of
the total current (I LT ), depending on how many phases are
in use.
The voltage at Q 2 ’s drain, the PHASE node, is applied to the
R ISEN resistor to develop the I ISEN current through the ISEN
pin. This pin is held at virtual ground, so the current through
2. Reduce the regulator output voltage with increasing load
current (droop)
3. Balance the I L currents in multiple channels
Overcurrent, Selecting R ISEN
The current detected through the R ISEN resistor is averaged
with the current(s) detected in the other 1, 2, or 3 channels.
The averaged current is compared with a trimmed, internally
generated current, and used to detect an overcurrent
condition.
The nominal current through the R ISEN resistor should be
50μA at full output load current, and the nominal trip point for
overcurrent detection is 165% of that value, or 82.5μA
(typical current levels) as shown in Equation 2. Therefore:
IR ISEN = ----------------------------------------------
R ISEN is shown in Equation 1:
r DS ( ON ) ( Q2 )
R
I L = ----------------------
ISEN
The I ISEN current provides information to perform the
following functions:
1. Detection of an overcurrent condition
13
(EQ. 1)
( I L ) r DS ( ON ) ( Q2 ) (EQ. 2)
50 μ A
For a full load of 25A per phase, and an r DS(ON) (Q 2 ) of
4m Ω , R ISEN = 2k Ω .
The overcurrent trip point would be 165% of 25A, or ~ 41A
per phase. The R ISEN value can be adjusted to change the
overcurrent trip point, but it is suggested to stay within ±25%
of nominal.
FN9034.3
May 5, 2008
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| HIP6302 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller |
| HIP6302_04 | 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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