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參數資料
| 型號： | TPS40055QPWPRQ1 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | PLASTIC, HTSSOP-16 |
| 文件頁數： | 24/28頁 |
| 文件大小： | 571K |
| 代理商： | TPS40055QPWPRQ1 |
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TYPICAL CHARACTERISTICS
40
80
100
120
60 40 20
0
20
40
20
0
60
80
140
60
100 120
TA Temperature 5C
V
O
S
Offset
V
oltage
(VLIM
vs
SW)
mV
VLim = 11.6 V
VLim = 23.6 V
DEVICE INFORMATION
THERMAL
PAD
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
KFF
RT
BP5
SYNC
SGND
SS/SD
VFB
COMP
ILIM
VIN
BOOST
HDRV
SW
BP10
LDRV
PGND
PWP PACKAGE(1)(2)
(TOP VIEW)
TPS40054-Q1, TPS40055-Q1, TPS40057-Q1
SLAS482A – AUGUST 2005 – REVISED NOVEMBER 2005
OFFSET VOLTAGE (VLIM vs SW)
vs
TEMPERATURE
Figure 1.
(1)
For more information on the PWP package, see the Texas Instruments Technical Brief (SLMA002)
(2)
PowerPAD heat slug must be connected to SGND (pin 5) or electrically isolated from all other pins.
TERMINAL FUNCTIONS
TERMINAL
I/O
DESCRIPTION
NAME
NO.
Gate drive voltage for the high side N-channel MOSFET. The BOOST voltage is 9 V greater than the input
BOOST
14
O
voltage. A 0.1-F ceramic capacitor should be connected from this pin to the drain of the lower MOSFET.
5-V reference. This pin should be bypassed to ground with a 0.1-F ceramic capacitor. This pin may be used
BP5
3
O
with an external dc load of 1 mA or less.
10-V reference used for gate drive of the N-channel synchronous rectifier. This pin should be bypassed by a
BP10
11
O
1-F ceramic capacitor. This pin may be used with an external dc load of 1 mA or less.
Output of the error amplifier, input to the PWM comparator. A feedback network is connected from this pin to
COMP
8
O
the VFB pin to compensate the overall loop. The COMP pin is internally clamped above the peak of the ramp to
improve large signal transient response.
Floating gate drive for the high-side N-channel MOSFET. This pin switches from BOOST (MOSFET on) to SW
HDRV
13
O
(MOSFET off).
5
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