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參數(shù)資料
| 型號： | SP6120EY |
| 英文描述： | Low Voltage, AnyFETTM, Synchronous,Buck Controller Ideal for 2A to 10A, High Performance, DC-DC Power Converters |
| 中文描述： | 低電壓，AnyFETTM，同步，降壓控制器適合2A至10A條，高性能，DC - DC電源轉(zhuǎn)換器 |
| 文件頁數(shù)： | 13/22頁 |
| 文件大?。?/td> | 308K |
| 代理商： | SP6120EY |
13
Date: 5/25/04
SP6120 Low Voltage, AnyFET
TM
, Synchronous, Buck Controller Copyright 2004 Sipex Corporation
switch. It is during this interval that the 3%
window comparator has taken control away from
the main loop. The main loop regains control
only if the output voltage crosses through its
regulated value. Also notice where the 3%
comparator takes over. The output voltage is
considered “high” only if the trough of the ripple
is above 3%. The output voltage is considered
“l(fā)ow” only if the peak of the ripple is below 3%.
By managing the secondary loop in this fashion,
the SP6120 can improve the transient response
of high performance power converters without
causing strange disturbances in low to moderate
performance systems.
Driver Logic
Signals from the PWM latch (QPWM), Fault
latch (FAULT), Program Logic, Zero Crossing
Comparator, and 3% Window Comparators all
flow into the Driver Logic. The following is a
truth table for determining the state of the GH
and GL voltages for given inputs:
E
L
B
A
T
H
T
U
R
T
C
G
O
L
R
E
V
D
T
L
U
A
F
1
1
0
0
0
0
0
0
0
0
r
M
M
O
W
C
P
Q
3
P
%
X
X
1
1
0
0
0
0
0
0
T
E
F
P
E
F
N
N
P
N
P
N
P
N
P
N
P
C
S
N
O
C
X
X
X
X
C
C
D
D
D
D
S
S
O
R
C
O
R
E
Z
X
X
X
X
X
X
0
0
1
1
H
G
0
1
1
0
0
1
0
1
0
1
L
G
0
0
0
0
1
1
1
1
0
0
The QPWM and 3% Comparators are grouped
together because 3% Low is the same as QPWM
= 1 and 3% High is the same as QPWM = 0.
Output Drivers
The driver stage consists of one high side, 4
driver, GH and one low side, 4
, NFET driver,
GL. As previously stated, the high side driver
can be configured to drive a PFET or an NFET
high side switch. The high side driver can also be
configured as a switch node referenced driver.
Due to voltage constraints, this mode is manda-
tory for 5V, single supply, high side NFET
applications. The following figure shows typical
driver waveforms for the 5V, high side NFET
design.
As with all synchronous designs, care must be
taken to ensure that the MOSFETs are properly
chosen for non-overlap time, peak current capa-
bility and efficiency.
GATE DRIVER TEST CONDITONS
5V
90%
10%
GH (GL)
2V
5V
GH (GL)
2V
NON-OVERLAP
RISE TIME
FALL TIME
90%
10%
V(BST)
0V
GH
V(V
CC
)
0V
GL
V(V
CC
= V
IN
)
SWN
~0V
~V(Diode) V
~2V(V
IN
)
BST
~V(V
IN
)
TIME
THEORY OF OPERATIONS: Continued
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|---|---|
| SP6120HV | High Voltage, Synchronous ,Buck Controller Ideal for 2A to 20A, High Performance, DC-DC Power Converters |
| SP6121 | Low Voltage, Synchronous Step Down PWM Controller Ideal for 2A to 10A, Small Footprint, DC-DC Power Converters |
| SP6121CN | Low Voltage, Synchronous Step Down PWM Controller Ideal for 2A to 10A, Small Footprint, DC-DC Power Converters |
| SP6121EB | Demo Board Manual |
| SP6132H | High Voltage, 300KHz Synchronous PWM Controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP6120EY/TR | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Low Voltage, AnyFET Synchronous, Cntrllr RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| SP6120EY-L | 功能描述:DC/DC 開關(guān)控制器 Low Voltage, AnyFET Synchronous, Cntrllr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| SP6120EY-L/TR | 功能描述:DC/DC 開關(guān)控制器 Low Voltage, AnyFET Synchronous, Cntrllr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| SP6120HV | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:High Voltage, Synchronous ,Buck Controller Ideal for 2A to 20A, High Performance, DC-DC Power Converters |
| SP6120HVCY | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:High Voltage, Synchronous ,Buck Controller Ideal for 2A to 20A, High Performance, DC-DC Power Converters |
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