參數(shù)資料
型號(hào)： HIP6301CBZ
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, LEAD FREE, MS-013-AC, SOIC-20
文件頁(yè)數(shù)： 7/17頁(yè)
文件大?。?/td> 406K
代理商： HIP6301CBZ
7
FN4765.6
December 27, 2004
Operation
Figure 1 shows a simplified diagram of the voltage regulation
and current control loops. Both voltage and current feedback
are used to precisely regulate voltage and tightly control
output currents, I
L1
and I
L2
, of the two power channels. The
voltage loop comprises the Error Amplifier, Comparators,
gate drivers and output MOSFETs. The Error Amplifier is
essentially connected as a voltage follower that has as an
input, the Programmable Reference DAC and an output that
is the CORE voltage.
Voltage Loop
Feedback from the CORE voltage is applied via resistor R
IN
to the inverting input of the Error Amplifier. This signal can
drive the Error Amplifier output either high or low, depending
upon the CORE voltage. Low CORE voltage makes the
amplifier output move towards a higher output voltage level.
Amplifier output voltage is applied to the positive inputs of
the Comparators via the Correction summing networks. Out-
of-phase sawtooth signals are applied to the two
Comparators inverting inputs. Increasing Error Amplifier
voltage results in increased Comparator output duty cycle.
This increased duty cycle signal is passed through the PWM
CIRCUIT with no phase reversal and on to the HIP6601B,
again with no phase reversal for gate drive to the upper
MOSFETs, Q1 and Q3. Increased duty cycle or ON time for
the MOSFET transistors results in increased output voltage
to compensate for the low output voltage sensed.
PROTECTION
Overvoltage Threshold
VSEN Rising
1.12
1.15
1.2
V
DAC
Percent Overvoltage Hysteresis
VSEN Falling after Overvoltage
-
2
-
%
Electrical Specifications
Operating Conditions: V
CC
= 5V, T
A
= 0°C to 70°C, Unless Otherwise Specified
(Continued)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
CURRENT
SENSING
COMPARATOR
PWM
CIRCUIT
+
R
ISEN1
+
CORRECTION
ERROR
AMPLIFIER
FB
REFERENCE
DAC
I
SEN1
R
IN
V
CORE
Q3
Q4
L
02
PHASE
PWM1
I
L2
HIP6303
C
OUT
R
LOAD
V
IN
HIP6601B
-
Q1
Q2
L
01
PHASE
I
L1
V
IN
HIP6601B
CURRENT
SENSING
COMPARATOR
PWM
CIRCUIT
CORRECTION
PWM2
-
I AVERAGE
+
+
+
-
PROGRAMMABLE
R
ISEN2
I
SEN2
-
-
-
-
+
+
CURRENT
AVERAGING
FIGURE 1. SIMPLIFIED BLOCK DIAGRAM OF THE HIP6301 VOLTAGE AND CURRENT CONTROL LOOPS FOR A TWO POWER
CHANNEL REGULATOR
∑
∑
∑
∑
HIP6301
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參數(shù)描述
HIP6301CBZA-T 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
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HIP6301V 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
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