參數(shù)資料
型號： TPS40055PWP
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： GREEN, PLASTIC, HTSSOP-16
文件頁數(shù)： 30/35頁
文件大?。?/td> 866K
代理商： TPS40055PWP
SLUS593F – DECEMBER 2003 – REVISED SEPTEMBER 2008 ...................................................................................................................................... www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
TA = –40°C to 85°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
CURRENT LIMIT
ISINK
Current limit sink current
8.5
10.0
11.5
A
VILIM = 23.7 V, VSW = (VILIM – 0.5 V)
300
Propagation delay to output
VILIM = 23.7 V, VSW = (VILIM – 2 V)
200
ns
tON
Switch leading-edge blanking pulse time(3)
100
tOFF
Off time during a fault (soft-start cycle time)
7
cycles
TA = 25°C
–90
–70
–50
VOS
Offset voltage SW vs. ILIM
VILIM = 23.6 V, 0°C ≤ TA ≤ 85°C
–120
–38
mV
VILIM = 23.6 V, -40°C ≤ TA ≤ 85°C
–120
–20
OUTPUT DRIVER
tLRISE
Low-side driver rise time
48
96
CLOAD = 2200 pF
tLFALL
Low-side driver fall time
24
48
ns
tHRISE
High-side driver rise time
48
96
CLOAD = 2200 pF (HDRV – SW)
tHFALL
High-side driver fall time
36
72
VBOOST
VOH
High-level ouput voltage, HDRV
IHDRV = –0.1 A (HDRV – SW)
–1.5 V
–1.0 V
VOL
Low-level ouput voltage, HDRV
IHDRV = 0.1 A (HDRV – SW)
0.75
V
VBP10
VOH
High-level ouput voltage, LDRV
ILDRV = –0.1 A
–1.4 V
– 1.0 V
VOL
Low-level ouput voltage, LDRV
ILDRV = 0.1 A
0.5
Minimum controllable pulse width
100
150
ns
SS/SD SHUTDOWN
VSD
Shutdown threshold voltage
Outputs off
90
125
160
mV
VEN
Device active threshold voltage
190
210
245
BOOST REGULATOR
VBOOST
Output voltage
VIN= 24.0 V
31.2
32.2
33.5
V
RECTIFIER ZERO CURRENT COMPARATOR (TPS40054 ONLY)
VSW
Switch voltage
LDRV output OFF
–10
–5
0
mV
SW NODE
ILEAK
Leakage current(3) (out of pin)
25
A
THERMAL SHUTDOWN
Shutdown temperature(3)
165
TSD
°C
Hysteresis(3)
20
UVLO
VUVLO
KFF programmable threshold voltage
RKFF = 28.7 k
6.95
7.50
7.95
VDD
UVLO, fixed
7.2
7.5
7.9
V
VDD
UVLO, hysteresis
0.46
(3)
Ensured by design. Not production tested.
4
Copyright 2003–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS40054 TPS40055 TPS40057
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