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TPS51513RHBT Datasheet(PDF) 5 Page - Texas Instruments

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Part No. TPS51513RHBT
Description  SINGLE PHASE, D-CAP SYNCHRONOUS BUCK CONTROLLER
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Maker  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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TPS51513RHBT Datasheet(HTML) 5 Page - Texas Instruments

 
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TPS51513
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SLUS956A – JUNE 2009 – REVISED FEBRUARY 2010
ELECTRICAL CHARACTERISTICS (continued)
over recommended free-air temperature range, V5IN = V5FILT = 5.0V, GSNS = PGND = GND, VSNS = VCORE (Unless
otherwise noted).
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
OVERSHOOT REDUCTION (OSR) THRESHOLD SETTING
VOSRSEL = GND
85
133
VOSRSEL = REF
119
170
VOSR
OSR voltage set
mV
VOSRSEL = 3.3 V
163
220
VOSRSEL = V5FILT; OSR is OFF
N/A
VOSRHYS
OSR voltage hysteresis(2)
All settings
20
mV
TIMERS: SLEW RATE, ISLEW, ON-TIME AND I/O TIMING
ISLEW 1
RSLEW to GND current
RSLEW = 125 kΩ from ISLEW to GND
9.9
10
10.15
mA
ISLEW 2
RSLEW to VREF current
RSLEW = 45 kΩ from VREF to ISLEW
9.5
10
10.8
mA
ISLEW = |10 mA|, No Faults, Time from EN to
tSTARTUP
VSNS startup time
0.6
1.15
ms
VSNS = VVID = 1.0
ISLEW = |10 µA|, EN goes ‘HI’ (Soft-start)
SLSTRTSTP
VSNS slew soft-start / soft-stop
1.3
1.6
1.9
mV/ms
Non-OVP Fault = ‘Soft-stop’
ISLEW = |10 mA|, SLP goes low/high. Measure
SLSLPE
VSNS slew SLP exit
10
12.5
15
mV/ms
slew on SLP transition.
tPGDPO
PGOOD power-on delay time
Time from PG going low to PGOOD going HI
3
6
9
ms
Time from VSNS out of +200 mV/–300 mV
tPGDDGLT
PGOOD deglitch time
50
100
160
ms
VDAC boundary to PGOOD low.
VTON = GND, VLL=12 V, VSNS=1 V
265
319
385
VTON = REF, VLL=12 V, VSNS=1 V
215
259
295
tON
On-time control
ns
VTON = 3.3 V, VLL=12 V, VSNS=1 V
180
215
250
VTON = 5 V, VLL=12 V, VSNS=1 V
140
160
185
tMIN
Controller minimum off-time
Fixed value
80
105
125
ns
tVIDDBNC
VID debounce time(2)
100
ns
tVCCVID
VID change to VSNS change (2)
600
ns
tVRONPGD
EN low to PGOOD low
100
ns
tPGDVCC
PGOOD low to VSNS change(2)
100
ns
PROTECTION: OVP, PGOOD, FAULTS OFF AND INTERNAL THERMAL SHUTDOWN
Internal high OVP threshold
VVOVPH
VSNS > VOVPH for 500 ns, DRVL turns ON
1.50
1.55
1.60
V
voltage
Measured at the VSNS pin wrt/VID code. device
VPGDH
PGOOD high threshold
183
215
247
mV
latches OFF, begins soft-stop.
Measured at the VSNS pin wrt/VID code. device
VPGDL
PGOOD low threshold
–358
–315
–275
mV
latches off, begins soft-stop.
Internal controller thermal
Not final tested. Latch off controller, attempt
THINT
160
°C
shutdown(2)
soft-stop.
Not final tested. Controller will start again after
THHYS
Thermal shutdown hysteresis(2)
10
°C
temperature has dropped.
(2)
Specified by design. Not production tested.
Copyright © 2009–2010, Texas Instruments Incorporated
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