PT7711 Datasheet, PDF (2/9 Pages) Texas Instruments – 20-A Programmable Integrated Switching Regulator

PT7711—5V
20-A Programmable
Integrated Switching Regulator
Programming Information
VID3 VID2 VID1 VID0
1111
1110
1101
1100
1011
1010
1001
1000
0111
0110
0101
0100
0011
0010
0001
0000
VID4=1
Vout
2.00V
2.10V
2.20V
2.30V
2.40V
2.50V
2.60V
2.70V
2.80V
2.90V
3.00V
3.10V
3.20V
3.30V
3.40V
3.50V
VID4=0
Vout
1.30V
1.35V
1.40V
1.45V
1.50V
1.55V
1.60V
1.65V
1.70V
1.75V
1.80V
1.85V
1.90V
1.95V
2.00V
2.05V
Logic 0 = Pin 12 potential (Rem Sense Gnd)
Logic 1 = Open circuit (no pull-up resistors)
VID 3 & VID4 must not be changed while the unit is operating.
PT7710 Product Family Comparison
Product
PT7711
Input
Voltage
5V
Description
VID
Adjust
Method
5-Bit
PT7712 3.3V
VID
4-Bit
PT7713 3.3V
VID
4-Bit
PT7714 3.3V
VID
5-Bit
PT7715
5V
VID
5-Bit
PT7716 3.3V
VID
5-Bit
PT7744 3.3V
Booster
—
PT7745
5V
Booster
—
Output
Range
1.3V– 3.5V
1.3V– 2.05V
1.8V– 2.55V
0.8V–1.575V
1.075V–1.85V
1.075V–1.85V
—
—
Specifications (Unless otherwise stated, T_a =25°C, V_in =5V, C_in =1,500µF, C_out =330µF, V_o =3.3V, and I_o =I_omax)
PT7711
Characteristics
Symbols
Conditions
Min
Typ
Max
Units
Output Current
Input Voltage Range
Set-Point Voltage Tolerance
Temperature Variation
Line Regulation
Load Regulation
Total Output Voltage Variation
Efficiency
Vo Ripple (pk-pk)
Transient Response
Over-Current Threshold
Switching Frequency
STBY* Input Requirements
Input High Voltage
Input Low Voltage
Input Low Current
Standby Input Current
External Capacitance
Operating Temperature Range
Storage Temperature
Mechanical Shock
Mechanical Vibration
Weight
Flammability
Io
Vin
Vo tol
Reg_temp
Regline
Regload
∆Vo tol
η
Vr
ttr
Vos
ITRIP
ƒs
VIH
VIL
IIL
Iin standby
Cout
Ta
Ts
—
—
—
—
Ta = +25°C, Natural convection
Ta = +60°C, 200 LFM, pkg N
Over Io range
All output voltages
–40°C ≤T_a ≤+85°C, I_o =I_omin
Over Vin range
Over Io range
Includes set-point, line, load,
–40°C ≤Ta ≤+85°C
Io =10A
Vo =3.3V
Vo =2.5V
Vo =1.8V
Io =20A
Vo =3.3V
Vo =2.5V
Vo =1.8V
20MHz bandwidth
1A/µs load step, 50% and 100% Iomax
Vo over/undershoot
Reset followed by auto-recovery
Over Vin range
0.1 (1)
0.1 (1)
4.5
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
300
Referenced to GND
Pin 5 to GND
Pin 5 to GND
Over Vin Range
—
Per Mil-STD-883D, Method 2002.3
1 msec, Half Sine, mounted to a fixture
Mil-STD-883D, Method 2007.2 Suffixes A, N
20-2000 Hz
Suffix C
Vertical/Horizontal
Materials meet UL 94V-0
2.0
-0.2
—
—
330 (4)
–40
-40
—
—
—
—
—
—
—
±10
±0.75
±5
±5
±1
93
90
87
90
85
80
35
50
±100
32
350
—
—
0.3
30
—
—
—
500
20 (6)
15 ⁽⁶⁾
36
20
20
5.5
±25 ⁽²⁾
—
—
—
A
V
mV
%V_o
mV
mV
±3
%Vo
—
—
%
—
—
—
%
—
—
mVpp
—
µSec
—
mV
—
A
400
kHz
Open (3)
0.8
—
—
15,000
+85 (5)
+125
—
—
—
—
V
mA
mA
µF
°C
°C
G’s
G’s
grams
Notes: (1) ISR-will operate down to no load with reduced specifications.
(2) If the remote sense ground is not used, pin 12 must be connected to pin 13 for optimum output voltage accuracy.
(3) The STBY* control (pin 5) has an internal pull-up. If it is left open-circuit, the module will operate when input power is applied. A low-leakage (<1µA)
MOSFET must be used to control this pin. The open-circuit voltage may be as high as Vin.
(4) For operation below 0°C, Cin and Cout must have stable characteristics. Use either low ESR tantalum or Oscon® capacitors.
(5) See safe Operating Area curves or consult factory for the appropriate derating.
(6) The case pins on the through-hole package types (suffixes N & A) must be soldered. For more information see the applicable package outline drawing.
External Capacitors: The regulator require a minimum output capacitance of 330µF for proper operation. An input capacitance of 1500µF is also required. This
must be rated for a minimum of 1.4Arms of ripple current. For transient or dynamic load applications, additional capacitance may be required. For further informa-
tion refer to the application note regarding capacitor selection for this product.
Input Filter: An input filter inductor is optional for most applications. The inductor must be sized to handle 20ADC with a typical value of 1µH.
For technical support and more information, see inside back cover or visit www.ti.com