TPS51513_16 Datasheet, PDF (3/39 Pages) Texas Instruments – SINGLE PHASE, D-CAP SYNCHRONOUS BUCK CONTROLLER

www.ti.com
TPS51513
SLUS956A – JUNE 2009 – REVISED FEBRUARY 2010
ELECTRICAL CHARACTERISTICS
over recommended free-air temperature range, V5IN = V5FILT = 5.0V, GSNS = PGND = GND, VSNS = V_CORE (Unless
otherwise noted).
PARAMETER
CONDITIONS
MIN TYP MAX UNIT
SUPPLY: CURRENTS, UVLO AND POWER-ON RESET
I_V5
I_V5STBY
V_UVLOH
V5IN + V5FILT supply current
V5IN + V5FILT standby current
V5FILT UVLO ‘OK’ threshold
VDAC < VSNS < VDAC + 100 mV, EN = ‘HI’
EN = ‘LO’
V5FILT = V5IN, VSNS < 200 mV, Ramp up;
EN=’HI’; Switching begins.
2
4.25 4.4
4 mA
10 mA
4.5 V
V_UVLOL
V_POR
V5FILT UVLO fault threshold
V5FILT = V5IN, Ramp down; EN = ’HI’, VSNS =
100 mV, Restart if 5 V dips below V_POR then
rises > V_UVLOH, or EN is toggled with 5 V >
V_UVLOH
V5FILT=V5IN, Ramp Down, EN=‘HI’. Can
V5FILT fault latch reset threshold restart if 5 V goes up to V_UVLOH and no other
faults present.
4.0 4.2
4.3 V
1.6 1.9
2.3 V
REFERENCES: DAC, VREF, VBOOT AND DRVL DISCHARGE
V_VIDSTP
VID step size
V_DAC1
VSNS voltage range 1
V_DAC2
VSNS no voltage range 2
V_DAC3
VSNS voltage range 3
V_DAC4
VSNS voltage range 4
V_VREF
VREF output voltage
V_VREFSRC
VREF output source
V_VREFSNK
VREF output sink
V_DLDQDRVL
Discharge threshold
VOLTAGE SENSE: VSNS AND GSNS
Change VID0 HI to LO to HI
0.75 V ≤ VSNS ≤ 1.25 V
0.50V ≤ VSNS ≤ 0.75 V
0.30V ≤ VSNS ≤ 0.50 V
1.25V ≤ VSNS ≤ 1.50 V
4.5V ≤ V5FILT ≤ 5.5 V, IREF = 0 A
IREF = 0 to 250 mA
IREF = –250 mA to 0 mA
VSNS < 200 mV, DRVL goes high for 1 ms
12.5
mV
–0.5%
0.5%
–8
8 mV
–12
12 mV
–1%
1%
1.665 1.700 1.735 V
–9
–3
mV
10
39 mV
200 250
325 mV
I_VSNS
I_VSNSDQ
VSNS input bias current
VSNS input bias current,
discharge
Not in Fault, Disable or UVLO
Fault, Disable or UVLO, VSNS = 100 mV
9
90 125
40 mA
175 mA
I_GSNS
V_DELGND
A_GAINGND
V_VSNSCOM
GSNS input bias current
GSNS differential
GSNS/GND gain
VSNS common mode dnput
–40
–8
mA
±300
mV
0.993
1 1.009 V/V
–0.3
2V
Copyright © 2009–2010, Texas Instruments Incorporated
Product Folder Link(s) :TPS51513
Submit Documentation Feedback
3