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| 型號(hào)： | TPS40055QPWPRQ1 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | PLASTIC, HTSSOP-16 |
| 文件頁(yè)數(shù)： | 23/28頁(yè) |
| 文件大?。?/td> | 571K |
| 代理商： | TPS40055QPWPRQ1 |
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www.ti.com
TPS40054-Q1, TPS40055-Q1, TPS40057-Q1
SLAS482A – AUGUST 2005 – REVISED NOVEMBER 2005
ELECTRICAL CHARACTERISTICS (continued)
T
J = –40°C to 125°C, VIN = 24 Vdc, RT = 90.9 k, IKFF = 150 A, fSW = 500 kHz, all parameters at zero power dissipation
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
tOFF
Off time during a fault
7
cycle
s
VILIM = 23.6 V, TJ = 25°C
–120
–70
–50
VILIM = 23.6 V, 0°C ≤ TJ≤ 125°C
–155
–38
VILIM = 23.6 V, –40°C ≤ TJ≤ 125°C
–155
–10
VOS
Offset voltage SW vs ILIM
mV
VILIM = 11.6 V, TJ = 25°C
–140
–60
VILIM = 11.6 V, 0°C ≤ TJ≤ 125°C
–165
–45
VILIM = 11.6 V, TJ = –40°C to 125°C
–165
–15
OUTPUT DRIVER
tLRISE
Low-side driver rise time
48
110
CLOAD = 2200 pF
ns
tLFALL
Low-side driver fall time
24
58
tHRISE
High-side driver rise time
48
105
CLOAD = 2200 pF, (HDRV – SW)
ns
tHFALL
High-side driver fall time
36
82
VOH
High-level output voltage, HDRV
IHDRV = –0.1 A (HDRV - SW)
BOOST BOOST
V
–1.9
– 1
VOL
Low-level output voltage, HDRV
IHDRV = 0.1 A (HDRV - SW)
0.85
V
VOH
High-level output voltage, LDRV
ILDRV = –0.1 A
BP10
V
–1.8
–1
VOL
Low-level output voltage, LDRV
ILDRV = 0.1 A
0.6
V
Minimum controllable pulse width
100
160
ns
SS/SD SHUTDOWN
VSD
Shutdown threshold voltage
Outputs off
85
125
170
mV
VEN
Device active threshold voltage
180
210
260
mV
BOOST REGULATOR
VBOOST Output voltage
VIN = 24 V
30.8
32.2
33.9
V
RECTIFIER ZERO CURRENT COMPARATOR (TPS40054 ONLY)
VSW
Switch voltage
LDRV output OFF
–10
–5
0
mV
SW NODE
ILEAK
Leakage current(3)
35
A
THERMAL SHUTDOWN
Shutdown temperature(3)
165
TSD
°C
Hysteresis(3)
20
UVLO
VUVLO
KFF programmable threshold voltage
RKFF = 28.7 k
6.85
7.5
7.95
UVLO, fixed
7.05
7.5
7.9
V
VDD
UVLO, hysteresis
0.46
(3)
Ensured by design. Not production tested.
4
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