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參數資料
| 型號： | TPS40131RHBR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, 1200 kHz SWITCHING FREQ-MAX, PQCC32 |
| 封裝： | GREEN, PLASTIC, QFN-32 |
| 文件頁數： | 36/40頁 |
| 文件大小： | 940K |
| 代理商： | TPS40131RHBR |
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SLVS635 – FEBRUARY 2007
ELECTRICAL CHARACTERISTICS (continued)
TA = -40°C to 85°C, VIN = 5.0 V, VDD = 12.0 V, RRT = 64.9 k, TJ = TA (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SOFT START
32 clocks after EN/SYNC before SS current
ISS
Soft-start source current
3.0
5.0
7.0
μA
begins
RSS
Soft-start pull down resistance
500
VSS
Fault enable threshold voltage
0.95
1.00
1.05
V
CURRENT SENSE AMPLIFIER
Input offset voltage
CS1, CS2
-15
-3
10
mV
Gain transfer to PWM
-100 mV
≤ V
CS≤ 100 mV, VCSRT = 1.5 V
5
V/V
comparator
Gain variance between phases
VCS - VCSRTn = 100 mV
-6%
0
6%
Input offset variance between
VCS = 0 V
-6
0
6
mV
phases
Input common mode (1)
0
1
VBP8-0.7
V
Bandwidth(1)
18
MHz
DIFFERENTIAL AMPLIFIER
Gain
1
V/V
Gain tolerance
VOUT = 5.5 V vs VOUT = 0.7 V, VGSNS = 0 V
-0.5%
0.5%
CMRR
Common mode rejection ratio
0.7 V
≤ V
OUT ≤ 5.5 V
50
dB
Output source current
VOUT - VGSNS = 2.0 V, VDIFFO ≥ 1.95 V
2
4
mA
Output sink current
VOUT - VGSNS = 2.0 V, VDIFFO ≥ 2.05 V
2
4
Bandwidth(1)
5
MHz
Input impedance, non-inverting(1) VOUT to GND
40
k
Input impedance, inverting(1)
VGSNS to VDIFFO
40
GATE DRIVERS
Source on-resistance, HDRV1,
VBOOT1 = 5 V, VBOOT2 = 5 V, VSW1 = 0 V,
1.0
2.0
3.5
HDRV2
VSW2 = 0 V, Sourcing 100 mA
Sink on-resistance, HDRV1,
VBOOT1 = 5 V, VBOOT2 = 5 V, VVIN5 = 5 V,
0.5
1.0
2.0
HDRV2
VSW1 = 0 V, VSW2 = 0 V, Sinking 100 mA
Source on-resistance, LDRV1,
VVIN5 = 5 V, VSW1 = 0 V, VSW2 = 0 V,
1
2
3.5
LDRV2
Sourcing 100 mA
Sink on-resistance, LDRV1,
VVIN5 = 5 V, VSW1 = 0 V, VSW2 = 0 V,
0.30
0.75
1.50
LDRV2
Sinking 100 mA
tRISE
Rise time, HDRV(1)
CLOAD = 3.3 nF
25
75
tFALL
Fall time, HDRV(1)
CLOAD = 3.3 nF
25
75
tRISE
Rise time, LDRV(1)
CLOAD = 3.3 nF
25
75
tFALL
Fall time, LDRV(1)
CLOAD = 3.3 nF
25
60
ns
SW falling to LDRV rising
50
tDEAD
Dead time(1)
LDRV falling to SW rising
30
tON
Minimum controllable on-time(1)
CLOAD = 3.3 nF
150
OUTPUT UNDERVOLTAGE FAULT
VFB relative to GND
560
588
610
mV
Undervoltage fault threshold
VFB relative to VVREF
-20%
-16%
-13%
OUTPUT OVERVOLTAGE SET
VOVSET relative to GND
800
820
840
mV
Overvoltage threshold
VOVSET relative to VVREF
15%
16%
20%
(1)
Ensured by design. Not production tested.
5
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