SLVSAB4D June   2010  – January 2017 TPS61183

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 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 Supply Voltage
      2. 7.3.2 Boost Regulator and Programmable Switch Frequency (FSCLT)
      3. 7.3.3 LED Current Sinks
      4. 7.3.4 Enable and Start-Up
      5. 7.3.5 IFB Pin Unused
    4. 7.4 Device Functional Modes
      1. 7.4.1 Brightness Dimming Control
      2. 7.4.2 Adjustable PWM Dimming Frequency and Mode Selection (R_FPWM/MODE)
      3. 7.4.3 Mode Selection - Programmable PWM Dimming or Direct PWM Dimming
      4. 7.4.4 Direct PWM Dimming
      5. 7.4.5 Overvoltage Clamp and Voltage Feedback (OVP/FB)
      6. 7.4.6 Current Sink Open Protection
      7. 7.4.7 Overcurrent and Short-Circuit Protection
      8. 7.4.8 Thermal Protection
      9. 7.4.9 Programmable PWM Dimming
  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 Inductor Selection
        2. 8.2.2.2 Output Capacitor Selection
        3. 8.2.2.3 Isolation FET Selection
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

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6 Specifications

6.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)(1)
MIN MAX UNIT
Voltage range(2) VIN, FAULT –0.3 24 V
FPO –0.3 7
SW –0.3 40
EN, PWM, IFB1 to IFB4 –0.3 20
on all other pins –0.3 3.6
Continuous power dissipation SeeThermal Information
Operating junction temperature range –40 150 °C
Tstg Storage temperature –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 voltage values 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(1) ±4000 V
Charged-device model (CDM), per JEDEC specification JESD22-C101(2) ±1500
Machine model 200
(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 free-air temperature range (unless otherwise noted)
MIN NOM MAX UNIT
VIN Input voltage range 4.5 24 V
VOUT Output voltage range VIN 38 V
L1 Inductor, 600-kHz to 1-MHz switching frequency 10 22 µH
L1 Inductor, 280-kHz to 600-kHz switching frequency 22 47 µH
CI Input capacitor 1 µF
CO Output capacitor 1 4.7 10 µF
FPWM_O IFBx PWM dimming frequency - frequency programmable mode 0.1 22(1) KHz
FPWM_O IFBx PWM dimming frequency - direct PWM mode 0.1 50 KHz
FPWM_I PWM input signal frequency 0.1 22 KHz
FBOOST Boost regulator switching frequency 280 1000 KHz
TA Operating free-air temperature –40 85 °C
TJ Operating junction temperature –40 125 °C
(1) 5 µs min pulse on time.

6.4 Thermal Information

THERMAL METRIC(1) TPS61183 UNITS
RTJ
20 PINS
RθJA Junction-to-ambient thermal resistance 39.9 °C/W
RθJC(top) Junction-to-case(top) thermal resistance 34.0 °C/W
RθJB Junction-to-board thermal resistance 9.9 °C/W
ψJT Junction-to-top characterization parameter 0.6 °C/W
ψJB Junction-to-board characterization parameter 9.5 °C/W
RθJC(bottom) Junction-to-case(bottom) thermal resistance 2 °C/W
(1) For more information about traditional and new thermal metrics, see Semiconductor and IC Package Thermal Metrics.

6.5 Electrical Characteristics

VIN = 12 V, PWM/EN = high, IFB current = 20 mA, IFB voltage = 500 mV, TA = –40°C to 85°C, typical values are at TA = 25°C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
SUPPLY CURRENT
VIN Input voltage range 4.5 24 V
Iq_VIN Operating quiescent current into Vin Device enable, switching 1 MHz and no load, VIN = 24 V 4 mA
VDDIO VDDIO pin output voltage ILOAD = 5 mA 3 3.6 V
ISD Shutdown current VIN = 12 V , EN = low 11 µA
VIN = 24 V, EN = low 16
VIN_UVLO VIN undervoltage lockout threshold VIN ramp down 3.50 V
VIN ramp up 3.75
VIN_Hys VIN undervoltage lockout hysterisis 250 mV
PWM
VH EN Logic high threshold EN 2.1 V
VL EN Logic low threshold EN 0.8
VH PWM Logic high threshold PWM 2.1
VL PWM Logic low threshold PWM 0.8
RPD Pulldown resistor on PWM and EN 400 800 1600 kΩ
CURRENT REGULATION
VISET ISET pin voltage 1.204 1.229 1.253 V
KISET Current multiplier 980
IFB Current accuracy (average) IISET = 20 µA, 0°C to 70°C –2% 2%
Current accuracy (average) IISET = 20 µA, –40°C to 85°C –2.3% 2.3%
Km (Imax–Imin) / IAVG IISET = 20 µA 1.3%
Ileak IFB pin leakage current IFB voltage = 15 V, each pin 2 5 µA
IFB voltage = 5 V, each pin 1 2
IIFB_max Current sink max output current IFB = 350 mV 30 mA
fdim PWM dimming frequency RFPWM = 9.09 kΩ 20 kHz
BOOST OUTPUT REGULATION
VIFB_L Output voltage up threshold Measured on VIFB(min) 350 mV
VIFB_H Output voltage down threshold Measured on VIFB(min) 650 mV
POWER SWITCH
RPWM_SW PWM FET on-resistance VIN = 12 V 0.25 0.35 Ω
ILN_NFET PWM FET leakage current VSW = 40 V, TA = 25°C 2 µA
OSCILLATOR
fSW Oscillator frequency RFSW = 499 kΩ 0.8 1 1.2 MHz
Dmax Maximum duty cycle IFB = 0 94%
OC, SC, OVP AND SS
ILIM N-Channel MOSFET current limit D = Dmax 2 3 A
VCLAMP_TH Output voltage clamp program threshold 1.9 1.95 2 V
VOVP_IFB IFB overvoltage threshold Measured on the IFBx pin, IFB on 12 13.5 15 V
FPO, FAULT
VFPO_L FPO Logic low voltage I_SOURCE = 0.5 mA 0.4 V
VFAULT_HIGH Fault high voltage Measured as VIN – VFAULT 0.1 V
VFAULT_LOW Fault low voltage Measured as VIN – VFAULT , Sink, 10 µA 6 8 10 V
IFAULT Maximum sink current VIN – VFAULT = 0 V 20 µA
THERMAL SHUTDOWN
Tshutdown Thermal shutdown threshold 150 °C
Thermal shutdown hysteresis 15

6.6 Typical Characteristics

Table 1. Table Of Graphs

TITLE DESCRIPTION FIGURE
Efficiency vs load current by output voltage VIN = 12 V, VOUT = 28 V, 32 V, 36 V, L = 10 µH Figure 18
Efficiency vs load current by input voltage VOUT = 32 V , VIN = 8 V, 12 V, 24 V, L = 10 µH Figure 19
Efficiency vs PWM duty VOUT = 32 V , VIN = 8 V, 12 V, 24 V, FDIM = 200 Hz, L = 10 µH, RISET = 62 kΩ Figure 20
Dimming linearity VOUT = 32 V, VIN = 8 V, 12 V, 24 V, FDIM = 20 KHz, L = 10 µH, RISET = 62 kΩ Figure 1
Dimming linearity VOUT = 32 V, VIN = 8 V, 12 V, 24 V, FDIM = 200 Hz, L = 10 µH, RISET = 62 kΩ Figure 2
Boost switching frequency VIN = 12 V, VOUT = 33.8 V, L = 10 µH, RISET = 62 kΩ Figure 3
Programmable dimming frequency VIN = 12 V, VOUT = 33.8 V, L = 10 µH, RISET = 62 kΩ Figure 4
Switch waveform VIN = 8 V, VOUT = 33.8 V, FDIM = 20 kHz, Duty = 100%, L = 10 µH, RISET = 62 kΩ Figure 5
Switch waveform VIN = 12 V, VOUT = 33.8 V, FDIM = 20 kHz, Duty = 100%, L = 10 µH, RISET = 62 kΩ Figure 6
Programmable PWM dimming FDIM = 200Hz, duty = 50% VIN = 12 V, VOUT = 33.8 V, FDIM = 20 kHz, Duty = 50%, L = 10 µH, RISET = 62 kΩ Figure 7
Programmable PWM dimming FDIM = 20KHz, duty = 50% VIN = 12 V, VOUT = 33.8 V, FDIM = 20 kHz, Duty = 50%, L = 10 µH, RISET = 62 kΩ Figure 8
Output ripple of programmable PWM dimming VIN = 12 V, VOUT = 33.8 V, FDIM = 20 kHz, Duty = 50%, L = 10 µH, RISET = 62 kΩ Figure 9
Output ripple of programmable PWM dimming VIN = 12 V, VOUT = 33.8 V, FDIM = 20 kHz, Duty = 70%, L = 10 µH, RISET = 62 kΩ Figure 10
Start-up waveform VIN = 12 V, VOUT = 33.8 V, FDIM = 20 kHz, Duty = 100%, L = 10 µH, RISET = 62 kΩ Figure 11
Start-up waveform VIN = 12 V, VOUT = 33.8 V, FDIM = 20 kHz, Duty = 50%, L = 10 µH, RISET = 62 kΩ Figure 12
TPS61183 io_dim_lvsa85.gif
Figure 1. Dimming Linearity
TPS61183 io2_dim_lvsa85.gif
Figure 2. Dimming Linearity
TPS61183 fs_rfsw_lvsaB4.gif
Figure 3. Boost Switching
TPS61183 sw1_wf_lvsab4.gif
Figure 5. Switch Waveform
TPS61183 PWM1_wf_lvsab4.gif
Figure 7. Programmable PWM Waveform
TPS61183 out1_ripp_lvsab4.gif
Figure 9. Output Ripple Waveform
TPS61183 startup1_lvsab4.gif
Figure 11. Start-Up Waveform
TPS61183 dim_rfpwm_lvsa85.gif
Figure 4. Programmable Dimming
TPS61183 sw2_wf_lvsab4.gif
Figure 6. Programmable PWM Waveform
TPS61183 PWM2_wf_lvsab4.gif
Figure 8. Programmable PWM Waveform
TPS61183 out2_ripp_lvsab4.gif
Figure 10. Output Ripple Waveform
TPS61183 startup2_lvsab4.gif
Figure 12. Start-Up Waveform