SBVS124A November   2008  – May 2016 TPS2115A-Q1

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Switching Characteristics
    7. 6.7 Typical Characteristics
  7. 7 Parameter Measurement Information
    1. 7.1 Test Circuits
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 N-Channel MOSFETs
      2. 8.3.2 Cross-Conduction Blocking
      3. 8.3.3 Reverse-Conduction Blocking
      4. 8.3.4 Charge Pump
      5. 8.3.5 Current Limiting
      6. 8.3.6 Output Voltage Slew-Rate Control
    4. 8.4 Device Functional Modes
      1. 8.4.1 Auto-Switching Mode
      2. 8.4.2 Manual Switching Mode
  9. 9 Application and Information
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curve
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Community Resources
    2. 12.2 Trademarks
    3. 12.3 Electrostatic Discharge Caution
    4. 12.4 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6 Specifications

6.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)(1)(2)
MIN MAX UNIT
VI Input voltage range IN1, IN2, D0, D1, ILIM –0.3 6 V
VO Output voltage range OUT, STAT –0.3 6 V
IO(sink) Output sink current STAT 5 mA
IO Continuous output current OUT 1.5 A
PD Continuous total-power dissipation See Thermal Information
TA Operating free-air temperature range –40 85 °C
TJ Operating virtual-junction temperature range –40 125 °C
Tlead Lead temperature soldering 1,6 mm (1/16 inch) from case for 10 seconds 260 °C
Storage temperature, Tstg –65 150° °C
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) All voltages are with respect to GND.

6.2 ESD Ratings

VALUE UNIT
V(ESD) Electrostatic discharge Human-body model (HBM) ±2000 V
Charged-device model (CDM) ±500

6.3 Recommended Operating Conditions

MIN NOM MAX UNIT
VI Input voltage IN1 VI(IN2) ≥ 2.8 V 1.5 5.5 V
VI(IN2) < 2.8 V 2.8 5.5
IN2 VI(IN1) ≥ 2.8 V 1.5 5.5
VI(IN1) < 2.8 V 2.8 5.5
D0, D1 0 5.5
VIH High-level input voltage D0, D1 2 V
VIL Low-level input voltage D0, D1 0.7 V
IO Current limit adjustment range OUT 0.63 1.25 A
TA Operating free-air temperature –40 85 °C
TJ Operating virtual-junction temperature range –40 125 °C

6.4 Thermal Information

THERMAL METRIC(1) TPS2115A-Q1 UNIT
PW (TSSOP)
8 PINS
RθJA Junction-to-ambient thermal resistance 159.2 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 40.7 °C/W
RθJB Junction-to-board thermal resistance 90.1 °C/W
ψJT Junction-to-top characterization parameter 2.1 °C/W
ψJB Junction-to-board characterization parameter 87.8 °C/W
RθJC(bot) Junction-to-case (bottom) thermal resistance n/a °C/W
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953.

6.5 Electrical Characteristics

over operating free-air temperature range, VI(IN1) = VI(IN2) = 5.5 V, RILIM = 400 Ω (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
POWER SWITCH (1)
rDS(on) Drain-source on-state resistance (INx to OUT) TA = 25°C, IL = 500 mA VI(IN1) = VI(IN2) = 5.0 V 84 110 mΩ
VI(IN1) = VI(IN2) = 3.3 V 84 110
VI(IN1) = VI(IN2) = 2.8 V 84 110
TA = 85°C, IL = 500 mA VI(IN1) = VI(IN2) = 5.0 V 150
VI(IN1) = VI(IN2) = 3.3 V 150
VI(IN1) = VI(IN2) = 2.8 V 150
LOGIC INPUTS (D0 AND D1)
II Input current at D0 or D1 D0 or D1 = high, sink current 1 μA
D0 or D1 = low, source current 0.5 1.4 5
SUPPLY AND LEAKAGE CURRENTS
Supply current from IN1 (operating) D1 = high, D0 = low (IN1 active), VI(IN1) = 5.5 V, VI(IN2) = 3.3 V, IO(OUT) = 0 A 55 90 μA
D1 = high, D0 = low (IN1 active), VI(IN1) = 3.3 V, VI(IN2) = 5.5 V, IO(OUT) = 0 A 1 12
D0 = D1 = low (IN2 active), VI(IN1) = 5.5 V, VI(IN2) = 3.3 V, IO(OUT) = 0 A 75
D0 = D1 = low (IN2 active), VI(IN1) = 3.3 V, VI(IN2) = 5.5 V, IO(OUT) = 0 A 1
Supply current from IN2 (operating) D1 = high, D0 = low (IN1 active), VI(IN1) = 5.5 V, VI(IN2) = 3.3 V, IO(OUT) = 0 A 1 μA
D1 = high, D0 = low (IN1 active), VI(IN1) = 3.3 V, VI(IN2) = 5.5 V, IO(OUT) = 0 A 75
D0 = D1 = low (IN2 active), VI(IN1) = 5.5 V, VI(IN2) = 3.3 V, IO(OUT) = 0 A 1 12
D0 = D1 = low (IN2 active), VI(IN1) = 3.3 V, VI(IN2) = 5.5 V, IO(OUT) = 0 A 55 90
Quiescent current from IN1 (standby) D0 = D1 = high (inactive), IO(OUT) = 0 A VI(IN1) = 5.5 V, VI(IN2) = 3.3 V 0.5 2 μA
VI(IN1) = 3.3 V, VI(IN2) = 5.5 V 1
Quiescent current from IN2 (standby) D0 = D1 = high (inactive), IO(OUT) = 0 A VI(IN1) = 5.5 V, VI(IN2) = 3.3 V 1 μA
VI(IN1) = 3.3 V, VI(IN2) = 5.5 V 0.5 2
Forward leakage current from IN1 (measured from OUT to GND) D0 = D1 = high (inactive), VI(IN1) = 5.5 V, IN2 open, VO(OUT) = 0 V (shorted),
TA = 25°C		 0.1 5 μA
Forward leakage current from IN2 (measured from OUT to GND) D0 = D1= high (inactive), VI(IN2) = 5.5 V, IN1 open, VO(OUT) = 0 V (shorted),
TA = 25°C		 0.1 5 μA
Reverse leakage current to INx (measured from INx to GND) D0 = D1 = high (inactive), VI(INx) = 0 V, VO(OUT) = 5.5 V, TA = 25°C 0.3 5 μA
CURRENT LIMIT CIRCUIT
Current limit accuracy RILIM = 400 Ω 0.95 1.25 1.56 A
RILIM = 700 Ω 0.47 0.71 0.99
td Current limit settling time Time for short-circuit output current to settle within 10% of its steady state value 1 ms
II Input current at ILIM VI(ILIM) = 0 V, IO(OUT) = 0 A –15 0 μA
UVLO
IN1 and IN2 UVLO Falling edge 1.15 1.25 V
Rising edge 1.30 1.35
IN1 and IN2 UVLO hysteresis 30 57 65 mV
Internal VDD UVLO (the higher of IN1 and IN2) Falling edge 2.4 2.53 V
Rising edge 2.58 2.8
Internal VDD UVLO hysteresis 30 50 75 mV
UVLO deglitch for IN1, IN2 Falling edge 110 μs
REVERSE CONDUCTION BLOCKING
ΔVIO(blk) Minimum input-to-output voltage difference to block switching D0 = D1 = high, VI(INx) = 3.3 V. Connect OUT to a 5-V supply through a series 1-kΩ resistor. Set D0 = low. Slowly decrease the supply voltage until OUT connects to IN1. 80 100 120 mV
THERMAL SHUTDOWN
Thermal shutdown threshold TPS2115A-Q1 device is in current limit. 135 °C
Recovery from thermal shutdown TPS2115A-Q1 device is in current limit. 125 °C
Hysteresis 10 °C
IN2-IN1 COMPARATORS
Hysteresis of IN2-IN1 comparator 0.1 0.2 V
Deglitch of IN2-IN1 comparator
(both ↑↓)		 10 20 50 μs
STAT OUTPUT
Ileak Leakage current VO(STAT) = 5.5 V 0.01 1 μA
Vsat Saturation voltage II(STAT) = 2 mA, IN1 switch is on 0.13 0.4 V
td Deglitch time
(falling edge only)		 150 μs
(1) The TPS2115A-Q1 device can switch a voltage as low as 1.5 V as long as there is a minimum of 2.8 V at one of the input power pins. In this case, the lower supply voltage has no effect on the IN1 and IN2 switch on-resistances.

6.6 Switching Characteristics

over operating free-air temperature range, VI(IN1) = VI(IN2) = 5.5 V, RILIM = 400 Ω (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Power Switch
tr Output rise time from an enable VI(IN1) = VI(IN2) = 5 V TA = 25°C, CL = 1 μF, IL = 500 mA, See Figure 1(a) 1 1.8 3 ms
tf Output fall time from a disable VI(IN1) = VI(IN2) = 5 V TA = 25°C, CL = 1 μF, IL = 500 mA, See Figure 1(a) 0.5 1 2 ms
tt Transition time IN1 to IN2 transition, VI(IN1) = 3.3 V,
VI(IN2) = 5 V		 TA = 85°C, CL = 10 μF, IL = 500 mA [Measure transition time as 10%-90% rise time or from 3.4 V to 4.8 V on VO(OUT)], See Figure 1(b) 40 60 μs
IN2 to IN1 transition, VI(IN1) = 5 V,
VI(IN2) = 3.3 V		 40 60
tPLH1 Turn-on propagation delay from enable VI(IN1) = VI(IN2) = 5 V, Measured from enable to 10% of VO(OUT) TA = 25°C, CL = 10 μF, IL = 500 mA, See Figure 1(a) 1 ms
tPHL1 Turn-off propagation delay from a disable VI(IN1) = VI(IN2) = 5 V, Measured from disable to 90% of VO(OUT) TA = 25°C, CL = 10 μF, IL = 500 mA, See Figure 1(a) 5 ms
tPLH2 Switch-over rising propagation delay Logic 1 to Logic 0 transition on D1, VI(IN1) = 1.5 V, VI(IN2) = 5 V, VI(D0) = 0 V, Measured from D1 to 10% of VO(OUT) TA = 25°C, CL = 10 μF, IL = 500 mA, See Figure 1(c) 40 100 μs
tPHL2 Switch-over falling propagation delay Logic 0 to Logic 1 transition on D1, VI(IN1) = 1.5 V, VI(IN2) = 5 V, VI(D0) = 0 V, Measured from D1 to 90% of VO(OUT) TA = 25°C, CL = 10 μF, IL = 500 mA, See Figure 1(c) 2 5 10 ms
TPS2115A-Q1 pmi_tpd_waves_bvs124.gif Figure 1. Propagation Delays and Transition Timing Waveforms

6.7 Typical Characteristics

TPS2115A-Q1 tc_out_switch_respons_bvs124.gif
Input to D1: f=28 Hz, 78% Duty Cycle See Figure 14 for test circuit
Figure 2. Output Switchover Response
TPS2115A-Q1 tc_out_droop_respons_bvs124.gif
Input to D1: f = 580 Hz, 90% duty cycle See Figure 16 for test circuit
Figure 4. Output Switchover Voltage Droop
TPS2115A-Q1 tc_autosw_droop_resp_bvs124.gif
Input to IN1 through switch: f = 220 Hz, 20% duty cycle See Figure 18 for test circuit
Figure 6. Auto Switchover Voltage Droop
TPS2115A-Q1 g_rdson_tj_bvs124.gif
Figure 8. Switch On-Resistance vs Junction Temperature
TPS2115A-Q1 g_iin1_vin1_disabl_bvs124.gif
VI(IN2) = 0 V IO(OUT) = 0 A
Figure 10. IN1 Supply Current vs Supply Voltage (Device Disabled)
TPS2115A-Q1 g_iin_tj_disabl_bvs124.gif
VI(IN1) = 5.5 V VI(IN2) = 3.3 V IO(OUT) = 0 A
Figure 12. Supply Current vs Junction Temperature (Device Disabled)
TPS2115A-Q1 tc_out_turnon_respons_bvs124.gif
Input to D0: f=28 Hz, 78% Duty Cycle See Figure 15 for test circuit
Figure 3. Output Turn-On Response
TPS2115A-Q1 tc_out_droop_cl_bvs124.gif
Input to D1: f = 28 Hz, 50% duty cycle See Figure 17 for test circuit
Figure 5. Output Switchover Voltage Droop vs Load Capacitance
TPS2115A-Q1 tc_inrush_curr_bvs124.gif
Input to D0: f=28 Hz 90% duty cycle See Figure 19 for test circuit
Figure 7. Inrush Current vs Load Capacitance
TPS2115A-Q1 g_rdsdon_vin_bvs124.gif
Figure 9. Switch On-Resistance vs Supply Voltage
TPS2115A-Q1 g_iin1_vin1_enabl_bvs124.gif
VI(IN2) = 0 V IO(OUT) = 0 A
Figure 11. IN1 Supply Current vs Supply Voltage (IN1 Switch ON)
TPS2115A-Q1 g_iin_tj_enabl_bvs124.gif
VI(IN1) = 5.5 V VI(IN2) = 3.3 V IO(OUT) = 0 A
Figure 13. Supply Current vs Junction Temperature (IN1 Switch ON)