參數(shù)資料
型號(hào)： HIP6021ACB
廠商： INTERSIL CORP
元件分類： 穩(wěn)壓器
英文描述： Advanced PWM and Triple Linear Power Controller
中文描述： 1 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO28
封裝： PLASTIC, MS-013AE, SOIC-28
文件頁(yè)數(shù)： 12/16頁(yè)
文件大小： 186K
代理商： HIP6021ACB
12
R3, C1, C2, and C3) in Figure 7. Use these guidelines for
locating the poles and zeros of the compensation network:
1. Pick Gain (R2/R1) for desired converter bandwidth
2. Place 1
ST
Zero Below Filter’s Double Pole (~75% F
LC
)
3. Place 2
ND
Zero at Filter’s Double Pole
4. Place 1
ST
Pole at the ESR Zero
5. Place 2
ND
Pole at Half the Switching Frequency
6. Check Gain against Error Amplifier’s Open-Loop Gain
7. Estimate Phase Margin - Repeat if Necessary
Figure 9 shows an asymptotic plot of the DC-DC converter’s
gain vs frequency. The actual Modulator Gain has a high gain
peak dependent on the quality factor (Q) of the output filter,
which is not shown in Figure 8. Using the above guidelines
should yield a Compensation Gain similar to the curve plotted.
The gain. Check the compensation gain at F
P2
with the
capabilities of the error amplifier. The Closed Loop Gain is
constructed on the log-log graph of Figure 9 by adding the
Modulator Gain (in dB) to the Compensation Gain (in dB). This
isequivalenttomultiplyingthemodulatortransferfunctiontothe
compensation transfer function and plotting the gain.
The compensation gain uses external impedance networks
Z
FB
and Z
IN
to provide a stable, high bandwidth (BW) overall
loop. A stable control loop has a gain crossing with
-20dB/decade slope and a phase margin greater than 45
degrees. Include worst case component variations when
determining phase margin.
Compensation Break Frequency Equations
FIGURE 7. PRINTED CIRCUIT BOARD POWER PLANES AND
ISLANDS
V
OUT1
Q1
L
OUT1
Q2
Q3
Q4
C
SS
+12V
C
VCC
VIA CONNECTION TO GROUND PLANE
ISLAND ON POWER PLANE LAYER
ISLAND ON CIRCUIT PLANE LAYER
C
OUT1
CR1
HIP6021A
C
IN
C
OUT2
V
OUT2
V
OUT3
+5V
IN
SS
PGND
LGATE1
UGATE1
PHASE1
DRIVE3
KEY
GND
OCSET1
VCC
DRIVE2
R
OCSET1
C
OCSET1
L
V
OUT4
DRIVE4
+3.3V
IN
L
IN
Q5
C
OUT3
C
OUT4
L
L
L
+3.3V
IN
FIGURE 8. VOLTAGE-MODE BUCK CONVERTER
COMPENSATION DESIGN
V
OUT
OSC
REFERENCE
L
O
C
O
ESR
V
IN
V
OSC
ERROR
AMP
PWM
COMP
DRIVER
(PARASITIC)
Z
FB
+
-
DACOUT
R1
R3
R2
C3
C2
C1
COMP
V
OUT
FB
Z
FB
HIP6021A
Z
IN
DRIVER
DETAILED COMPENSATION COMPONENTS
PHASE
V
E/A
+
-
+
-
Z
IN
F
Z1
-----------------------------------
=
F
Z2
R3
)
C3
×
------------------------+
=
F
P1
2
π
R
2
----------+
×
×
------------------------------------------------------
=
F
P2
-----------------------------------
=
FIGURE 9. ASYMPTOTIC BODE PLOT OF CONVERTER GAIN
100
80
60
40
20
0
-20
-40
-60
F
P1
F
Z2
10M
1M
100K
10K
1K
100
10
OPEN LOOP
ERROR AMP GAIN
F
Z1
F
P2
F
LC
F
ESR
COMPENSATION
GAIN
G
FREQUENCY (Hz)
MODULATOR
GAIN
CLOSED LOOP
GAIN
20
VPP
log
20
R1
log
HIP6021A
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HIP6021ACB WAF 制造商:Harris Corporation 功能描述:
HIP6021ACB-T 制造商:Rochester Electronics LLC 功能描述:- Bulk
HIP6021CB 功能描述:IC REG QD BCK/LINEAR 28-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 + 切換式 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 拓?fù)?降壓（降壓）同步（3），線性（LDO）（2） 功能:任何功能 輸出數(shù):5 頻率 - 開關(guān):300kHz 電壓/電流 - 輸出 1:控制器 電壓/電流 - 輸出 2:控制器 電壓/電流 - 輸出 3:控制器 帶 LED 驅(qū)動(dòng)器:無(wú) 帶監(jiān)控器:無(wú) 帶序列發(fā)生器:是 電源電壓:5.6 V ~ 24 V 工作溫度:-40°C ~ 85°C 安裝類型:* 封裝/外殼:* 供應(yīng)商設(shè)備封裝:* 包裝:*
HIP6021CB-T 功能描述:IC REG QD BCK/LINEAR 28-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 + 切換式 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 拓?fù)?降壓（降壓）同步（3），線性（LDO）（2） 功能:任何功能 輸出數(shù):5 頻率 - 開關(guān):300kHz 電壓/電流 - 輸出 1:控制器 電壓/電流 - 輸出 2:控制器 電壓/電流 - 輸出 3:控制器 帶 LED 驅(qū)動(dòng)器:無(wú) 帶監(jiān)控器:無(wú) 帶序列發(fā)生器:是 電源電壓:5.6 V ~ 24 V 工作溫度:-40°C ~ 85°C 安裝類型:* 封裝/外殼:* 供應(yīng)商設(shè)備封裝:* 包裝:*
HIP6021CBZ 功能描述:電壓模式 PWM 控制器 SINGLE PWM & TRPL LINEAR CNTRLR RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
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