TPSM84A22 Datasheet, PDF (6/27 Pages) Texas Instruments – 8-V to 14-V Input, 1.2-V to 2.05-V Output, 10-A SWIFT Power Module

TPSM84A22
SLVSDF8 – DECEMBER 2016
www.ti.com
Electrical Characteristics (continued)
Over –40ºC to +85°C free-air temperature range, V_IN = 12 V, V_OUT = 1.5 V, I_OUT = I_OUT max, F_SW = 4 MHz,
External C_IN = 2 × 22 µF 25 V 1210 ceramic plus 1 × 100 µF electrolytic (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
PERFORMANCE
ƞ
Efficiency ⁽³⁾
Transient response⁽³⁾
V_IN = 12 V, I_OUT = 5 A
1 A/µs load step,
25% to 75% IOUT(max),
COUT= 0 µF
5 A/µs load step,
25% to 75% IOUT(max),
COUT= 0 µF
V_OUT = 1.2 V, VG = open
V_OUT = 1.2 V, VG = 5 V
V_OUT = 1.5 V, VG = open
V_OUT = 1.5 V, VG = 5 V
V_OUT = 1.8 V, VG = open
V_OUT = 1.8 V, VG = 5 V
VOUT over/undershoot
Recovery time
VOUT over/undershoot
Recovery time
84.2%
86.2%
85.7%
87.5%
87.4%
89.0%
15
10
30
10
SOFT START
T_SS
Internal soft start time⁽³⁾
4.1
INTERNAL REGULATOR (VG)
V_VG
VG pin output voltage
ENABLE AND UNDER-VOLTAGE LOCK-OUT (EN/UVLO)
4.4
4.8
V_EN
EN threshold range
Input current
I_EN
Hysteresis current
EN threshold + 50 mV
EN threshold – 50 mV
1.17
1.23
–4
–1
POWER GOOD (PGOOD)
V_PGOOD PGOOD thresholds⁽³⁾
Minimum V_IN for valid
PGOOD ⁽³⁾
V_VOUT falling (Fault)
V_VOUT rising (Good)
V_VOUT rising (Fault)
V_VOUT falling (Good)
V_PGOOD ≤ 0.5 V at 100 µA
89%
95%
109%
104%
1.2
PGOOD low voltage
THERMAL SHUTDOWN
I_PGOOD = 1.7 mA
0.25
Thermal shutdown threshold
135
Thermal shutdown hysteresis
20
CAPACITANCE
C_IN
External input capacitance
C_OUT
External output capacitance
Ceramic type
Non-ceramic type
Ceramic type
Non-ceramic type
Equivalent series resistance (ESR)
0 ⁽⁴⁾
44
0 ⁽⁴⁾
100
0 ⁽⁵⁾
0 ⁽⁵⁾
MAX UNIT
mV
µs
mV
µs
ms
5.0 V
1.27 V
µA
µA
2.75 V
0.3 V
°C
°C
µF
µF
1000⁽⁶⁾ µF
2200⁽⁶⁾ µF
35 mΩ
(4) Internal to the device, 14.2 µF (nominal) ceramic input capacitance is present. This device does not require additional input capacitance.
If adding additional input capacitance, locate the capacitors close to the device.
(5) Internal to the device, 135 µF (nominal) ceramic output capacitance is present. This device does not require additional output
capacitance to operate. Adding additional output capacitance near the load improves the response of the device to load transients.
(6) The maximum output capacitance listed in the table is the maximum amount that has been tested and validated for proper start-up,
stability, and transient response. It may be possible to operate with additional output capacitance, however, additional validation is
required.
6
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