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TPS65311QRVJRQ1 Fiches technique(PDF) 6 Page - Texas Instruments

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No de pièce TPS65311QRVJRQ1
Description  High-Voltage Power-Management IC for Automotive Safety Applications
Download  49 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

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TPS65311-Q1
SLVSCA6A – OCTOBER 2013 – REVISED OCTOBER 2013
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
VIN = VINPROT 4.8 V to 40 V, VSUPx = 3 V to 5.5 V, EXTSUP = 0 V, TJ(max) = 125°C, unless otherwise noted
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SYNCHRONOUS BUCK CONVERTER BUCK2/3
VSUP2/3
Supply voltage
3
11
V
Iload = 0…2 A
VBUCK2/3
Regulated output voltage range
0.8
5.5
V
VSUPx = VBUCK2/3 + Iload × 0.2 Ω
RDSON-HS
RDSON high-side switch
VBOOTx –PHx = 5.8 V
0.20
Ω
RDSON-LS
RDSON low-side switch
VREG = 5.8 V
0.20
Ω
IHS-Limit
High-side switch current limit
Static current limit test.
2.5
2.9
3.3
In application L > 1 µH at
A
ILS-Limit
Low-side switch current limit
2
2.5
3
IHS-Limit and ILS-Limit to limit dI / dt
VSUP = 10 V for high side, controller disabled,
VSUPLkg
VSUP leakage current
1
2
µA
TJ = 100°C
fSWLBuck2/3
Buck switching frequency
fOSC / 2
VSense2/3
Feedback voltage
With respect to the 800-mV internal reference
–1%
1%
High-side minimum on time
50
ns
DCBUCK2/3
Duty cycle
Maximum duty cycle
99.8%
tDEAD_BUCK2/3
Shoot-through delay
20
ns
COMP2/3HTH
COMP2/3 Input threshold low
0.9
1.5
V
VREG –
VREG –
COMP2/3LTH
COMP2/3 Input threshold high
V
1.2
0.3
RTIEOFF COMP23
COMP2/3 internal tie-off
BUCK2/3 enabled. Resistor to VREG and GND, each
70
100
130
k
Ω
VDIO2 3
Bootstrap diode forward voltage
IBOOT1 = –200 mA, VREG-BOOT2, VREG-BOOT3
1.1
1.2
V
BOOST CONVERTER
Boost adjustable output voltage
VBoost
Using 3.3-V input voltage, Ieak_switch
≤ 1 A
4.5
15
V
range
Boost adjustable output voltage
Using 3.3-V input voltage Iloadmax = 20 mA, Ipeak_switch =
VBoost
15
18.5
V
range
0.3 A
RDS-ON_BOOST
Internal switch on-resistance
VREG = 5.8 V
0.3
0.5
Ω
VSense5
Feedback voltage
With respect to the 800-mV internal reference
–1%
1%
fSWLBOOST
Boost switching frequency
fOSC / 2
Maximum internal MOSFET duty
DCBOOST
75%
cycle at fSWLBOOST
ICLBOOST
Internal switch current limit
1
1.5
A
LINEAR REGULATOR LDO
VSUP4
Device operating range for LDO
Recommended operating range
3
7
V
VLDO
Regulated output range
IOUT = 1 mA to 350 mA
0.8
5.25
V
DC output voltage tolerance at
VSENSE4 = 0.8 V (regulated at internal ref)
VRefLDO
–2%
2%
VSENSE4
VSUP4 = 3 V to 7 V, IOUT = 1 mA to 350 mA
VSENSE4 = 0.8 V (regulated at internal ref)
Vstep1
Load step 1
–2%
2%
IOUT = 1 mA to 101 mA, CLDO = 6 to 50 µF, trise = 1 µs
VSense4
Feedback voltage
With respect to the 800-mV internal reference
–1%
1%
IOUT = 350 mA, TJ = 25°C
127
143
VDropout
Drop out voltage
mV
IOUT = 350 mA, TJ = 125°C
156
180
IOUT
Output current
VOUT in regulation
–350
–1
mA
ILDO-CL
Output current limit
VOUT = 0 V, VSUP4 = 3 V to 7 V
–1000
–400
mA
Freq = 100 Hz
60
Vripple = 0.5 VPP, IOUT = 300 mA,
PSRRLDO
Power supply ripple rejection
Freq = 4 kHz
50
dB
CLDO = 10 µF
Freq = 150 kHz
25
LDOns10-100
Output noise 10 Hz – 100 Hz
10-µF output capacitance, VLDO = 2.5 V
20
µV/
√(Hz)
LDOns100-1k
Output noise 100 Hz – 10 kHz
10-µF output capacitance, VLDO = 2.5 V
6
µV/
√(Hz)
Ceramic capacitor with ESR range, CLDO_ESR = 0 to
CLDO
Output capacitor
6
50
µF
100 m
6
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