ZHCSEQ2A February   2016  – February 2016 TPS62480

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用范围
  3. 3 说明
  4. 4 修订历史记录
  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 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Enable / Shutdown (EN)
      2. 7.3.2  Soft Start (SS), Pre-biased Output
      3. 7.3.3  Tracking (TR)
      4. 7.3.4  Output Voltage Select (VSEL)
      5. 7.3.5  Forced PWM (MODE)
      6. 7.3.6  Power Good (PG)
      7. 7.3.7  Thermal Good (TG)
      8. 7.3.8  Active Output Discharge
      9. 7.3.9  Undervoltage Lockout (UVLO)
      10. 7.3.10 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Pulse Width Modulation (PWM) Operation
      2. 7.4.2 Power Save Mode (PSM) Operation
      3. 7.4.3 Minimum Duty Cycle and 100% Mode Operation
      4. 7.4.4 Phase Shifted Operation
      5. 7.4.5 Phase Add/Shed and Current Balancing
      6. 7.4.6 Current Limit and Short Circuit Protection
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Setting the Adjustable Output Voltage
        2. 8.2.2.2 Setting VOUT2 Using the VSEL Feature
        3. 8.2.2.3 Output Filter Selection
        4. 8.2.2.4 Inductor Selection
        5. 8.2.2.5 Output Capacitor Selection
        6. 8.2.2.6 Input Capacitor Selection
        7. 8.2.2.7 Soft Start Capacitor Selection
        8. 8.2.2.8 Tracking
        9. 8.2.2.9 Current Sharing
      3. 8.2.3 Application Curves
    3. 8.3 System Examples
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11器件和文档支持
    1. 11.1 Third-Party Products Disclaimer
    2. 11.2 社区资源
    3. 11.3 商标
    4. 11.4 静电放电警告
    5. 11.5 Glossary
  12. 12机械、封装和可订购信息

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

6 Specifications

6.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted) (1)
MIN MAX UNIT
Pin Voltage Range(2) VIN -0.3 6 V
SW1, SW2 -0.3 VIN+0.3 V
EN, VSEL, MODE, SS/TR, PG, TG -0.3 6 V
FB, RS -0.3 3 V
Power Good / Thermal Good Sink Current PG, TG 10 mA
Operating Junction Temperature Range, TJ -40 150 °C
Storage Temperature Range, 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 network ground terminal.

6.2 ESD Ratings

VALUE UNIT
V(ESD) Electrostatic discharge Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins(1) ±1000 V
Charged device model (CDM), per JEDEC specification JESD22-C101, all pins(2) ±500
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

6.3 Recommended Operating Conditions

over operating junction temperature range (unless otherwise noted)
MIN TYP MAX UNIT
Supply Voltage Range, VIN 2.4 5.5 V
Output Voltage Range, VOUT 0.6 5.5 V
Maximum Output Current, IOUT 6 A
Operating junction temperature, TJ –40 125 °C

6.4 Thermal Information

THERMAL METRIC(1) TPS62480 UNIT
RNC 16 PINS
JEDEC with thermal vias(2) JEDEC standard
RθJA Junction-to-ambient thermal resistance 26.4 56.4 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 32.2 32.2 °C/W
RθJB Junction-to-board thermal resistance 10.2 26.5 °C/W
ψJT Junction-to-top characterization parameter 0.9 1.3 °C/W
ψJB Junction-to-board characterization parameter 10.2 26.5 °C/W
RθJC(bot) Junction-to-case (bottom) thermal resistance - - °C/W
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
(2) See the Layout section.

6.5 Electrical Characteristics

over operating junction temperature range (TJ = –40°C to 125°C) and VIN = 2.4 V to 5.5 V. Typical values at VIN = 3.6 V and TJ = 25°C (unless otherwise noted).
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
SUPPLY
VIN Input Voltage Range VIN rising 2.6 5.5 V
VIN falling 2.4 5.5
IQ Operating Quiescent Current EN = High, VIN ≥ 3 V, IOUT = 0 mA, device not switching,
TJ = -40°C to +85°C		 23 38 µA
100% Mode operation 3.5 6.5 mA
ISD Shutdown Current EN = Low (≤ 0.3 V), TJ = -40°C to +85°C 0.5 18.5 µA
VUVLO Undervoltage Lockout Threshold Falling Input Voltage 2.2 2.3 2.4 V
Hysteresis 200 mV
TSD Thermal Shutdown Temperature PWM Mode, Rising Junction Temperature 160 °C
Thermal Shutdown Hysteresis PWM Mode 10
CONTROL (EN, VSEL, MODE, SS/TR, PG, TG)
VH Input Threshold Voltage (EN, VSEL, MODE) to ensure High Level 1.2 V
VL Input Threshold Voltage (EN, VSEL, MODE) to ensure Low Level 0.4
ILKG(EN) Input Leakage Current (EN) EN = VIN or GND 10 200 nA
ILKG(MODE) Input Leakage Current (MODE, VSEL) 10 200 nA
ISS/TR SS/TR pin source current 4.7 5.25 5.8 µA
VTH(TG) Thermal Good Threshold Temperature PWM Mode 120 °C
Thermal Good Hysteresis PWM Mode 10
VTH(PG) Power Good Threshold Voltage Rising (%VOUT) 93% 96% 99%
Falling (%VOUT) 89% 92% 95%
VL(PG) Output Low Threshold (PG, TG) IPG = -2 mA 0.4 V
ILKG(PG) Input Leakage Current (PG) 2 700 nA
ILKG(TG) Input Leakage Current (TG) 2 100 nA
tSS Internal Soft-Start Time SS/TR = VIN or floating 80 µs
tDELAY Time from EN rising until start switching 100 200 400 µs
POWER SWITCH
RDS(ON) High-Side MOSFET
ON-Resistance		 VIN ≥ 3 V Phase1 36 98 mΩ
Phase2
Low-Side MOSFET
ON-Resistance		 Phase1 29 72 mΩ
Phase2
ILIM High-Side MOSFET
Current Limit 		per phase 4.3 5.0 5.8 A
OUTPUT
VREF Internal Reference Voltage 0.6 V
ILKG(FB) Input Leakage Current (FB) EN = High VFB = 0.6 V 1 65 nA
ILKG(RS) Input Leakage Current (RS) VSEL = Low, VRS = 0.6 V 1 65 nA
RRS Internal resistance (RS to GND) VSEL = High, IRS = 1 mA 10 50 Ω
VOUT Output Voltage Range VIN ≥ VOUT 0.6 5.5 V
VOUT Feedback Voltage Accuracy PWM Mode,
VIN ≥ VOUT + 1 V		 TJ = –20°C to 85°C -1% 1%
TJ = –40°C to 125°C -1.4% 1.3%
VOUT Feedback Voltage Accuracy Power Save Mode, L = 0.47 µH,
COUT = 4 x 22 µF(1) 		-1.4% 2.5%
Output Discharge Current(2) EN = Low, VOUT = 2.5 V 120 mA
Load Regulation VOUT = 1.8 V, PWM mode operation 0.02 %/A
Line Regulation 2.6 V ≤ VIN ≤ 5.5 V, VOUT = 1.8 V, IOUT = 6 A, PWM mode operation 0.02 %/V
(1) The output voltage accuracy in Power Save Mode can be improved by increasing the output capacitor value, reducing the output voltage ripple.
(2) For detailed information on output discharge see Active Output Discharge.

6.6 Typical Characteristics

TPS62480 SLVSCL9_IQ.gif
Figure 1. Quiescent Current
TPS62480 SLVSCL9_RDSONHS.gif
Figure 3. High-Side Switch Resistance
TPS62480 SLVSCL9_ISD.gif
Figure 2. Shutdown Current
TPS62480 SLVSCL9_RDSONLS.gif
Figure 4. Low-Side Switch Resistance
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