The TPS92513/HV are 1.5A step-down (buck) current regulators with an integrated MOSFET to drive high current LEDs. Available with 42 V and 60 V (HV) input ranges, these LED drivers operate at a user selected fixed-frequency with peak-current mode control and deliver excellent line and load regulation.
The TPS92513/HV LED drivers feature separate inputs for analog and pulse width modulation (PWM) dimming for no compromise brightness control achieving contrast ratios of greater than 10:1 and greater than 100:1, respectively. The PWM input is compatible with low-voltage logic standards for easy interface to a broad range of microcontrollers. The analog LED current setpoint is adjustable from 0 V to 300 mV using the IADJ input with an external 0 V to 1.8 V signal.
For multi-string applications using two or more TPS92513/HV LED drivers, the internal oscillator can be overdriven by an external clock ensuring all of the converters operate at a common frequency thereby reducing the potential for beat frequencies and simplifying system EMI filtering. An adjustable input under-voltage lockout (UVLO) with hysteresis provides flexibility in setting start/stop voltages based upon supply voltage conditions.
The TPS92513includes cycle-by-cycle overcurrent protection and thermal shutdown protection. It is available in a 10-pin HVSSOP PowerPAD™ package.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
TPS92513 | HVSSOP (10) | 5.00 mm x 3.00 mm |
TPS92513HV |
DATE | REVISION | NOTES |
---|---|---|
April 2015 | * | Initial release. |
PIN | TYPE(1) | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
BOOT | 1 | O | A bootstrap capacitor is required between BOOT and PH. If the voltage on this capacitor is below the minimum required by the output device, the output is forced to switch off until the capacitor is recharged. |
COMP | 8 | O | Error amplifier output, and input to the output switch current comparator. Connect frequency compensation components to this pin. |
GND | 9 | G | Ground. |
IADJ | 6 | I | Analog current adjust pin. The voltage applied to this pin will set the current sense (ISENSE pin) voltage. The range of the ADJ pin is 180 mV to 1.8 V and the corresponding ISENSE pin voltage is the IADJ pin voltage divided by 6. |
ISENSE | 7 | I | Inverting node of the transconductance (gM) error amplifier. |
PDIM | 4 | I | PWM dimming input pin. The duty cycle of the PWM signal linearly controls the average output current of the converter. |
PH | 10 | O | The source of the internal high-side MOSFET. |
PowerPAD | PAD | G | GND pin must be electrically connected to the exposed pad directly beneath the device on the printed circuit board for proper operation. |
RT/CLK | 5 | I | Resistor timing and external clock. An internal amplifier holds this pin at a fixed voltage when using an external resistor to ground to program the switching frequency. If the pin is pulled above the PLL upper threshold, a mode change occurs and the pin becomes a synchronization input. The internal amplifier is disabled and the pin becomes a high impedance clock input to the internal PLL. If the clocking edges stop, the internal amplifier is re-enabled and the mode returns to the resistor-programmed function. |
UVLO | 3 | I | Adjustable undervoltage lockout. Set with resistor divider from VIN. |
VIN | 2 | P | Input supply voltage, 4.5V to 42V or 4.5V to 60V for the HV version. |
MIN | MAX | UNIT | |||
---|---|---|---|---|---|
Input voltage | VIN (TPS92513HV) | –0.3 | 65 | V | |
VIN (TPS92513) | –0.3 | 45 | |||
PDIM, UVLO | –0.3 | 5 | |||
BOOT | (PH + 8) | ||||
ISENSE, IADJ, COMP | –0.3 | 3 | |||
RT/CLK | –0.3 | 3.6 | |||
Output voltage | PH (TPS92513HV) | –0.6 | 65 | V | |
PH (TPS92513) | –0.6 | 45 | |||
PH, 10-ns Transient | –2 | ||||
Voltage Difference | PAD to GND | ±200 | mV | ||
Source Current | PH | Current Limit | A | ||
Sink current | VIN | Current Limit | A | ||
BOOT | 1 | mA | |||
TJ | Operating junction temperature | –40 | 150 | °C | |
Tstg | Storage temperature | –65 | 150 | °C |
VALUE | UNIT | |||
---|---|---|---|---|
V(ESD) | Electrostatic discharge | Human-body model (HBM),ESD stress voltage(1) | ±2000 | V |
Charged-device model (CDM), ESD stress voltage(2) | ±500 | V |
MIN | MAX | UNIT | ||
---|---|---|---|---|
VIN | Input voltage (TPS92513HV) | 4.5 | 60 | V |
Input voltage (TPS92513) | 4.5 | 42 | ||
fSW | Switching frequency range using RT mode | 100 | 2000 | kHz |
Switching frequency range using CLK mode | 300 | 2000 | ||
tMIN(RT/CLK) | Minimum RT/CLK input pulse width for switching frequency synchronization | 51 | ns | |
TJ | Operating junction temperature | –40 | 125 | °C |
THERMAL METRIC(1) | TPS92513 TPS92513HV |
UNIT | |
---|---|---|---|
DGQ (10 PINS) | |||
RθJA | Junction-to-ambient thermal resistance | 66.7 | °C/W |
RθJC(top) | Junction-to-case (top) thermal resistance | 45.8 | |
RθJB | Junction-to-board thermal resistance | 37.5 | |
ψJT | Junction-to-top characterization parameter | 1.8 | |
ψJB | Junction-to-board characterization parameter | 37.1 | |
RθJC(bot) | Junction-to-case (bottom) thermal resistance | 15.4 |
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |
---|---|---|---|---|---|---|
SUPPLY VOLTAGE (VIN) | ||||||
VINUVLO | VIN undervoltage lockout threshold | No voltage hysteresis, rising and falling | 2.94 | V | ||
IVINSD | Shutdown supply current | VUVLO = 0 V, 4.5 V ≤ VVIN ≤ 42 V (60 V for HV) | 11.5 | µA | ||
IVIN | Non-switching supply current | VISENSE = 220 mV, 4.5V ≤ VVIN ≤ 42 V (60 V for HV) | 337 | 407 | µA | |
UNDER VOLTAGE LOCKOUT (UVLO) | ||||||
VUVLO | UVLO threshold voltage | Rising threshold | 1.12 | 1.22 | 1.30 | V |
UVLO pin source current | VUVLO = 1.5 V (device enabled) | 3.97 | µA | |||
VUVLO = 1 V (device disabled) | 1.05 | |||||
ANALOG CURRENT ADJUST (VIADJ, VISENSE) | ||||||
VIADJ | IADJ clamp voltage | IIADJ = 1 µA | 1.8 | V | ||
IIADJ = 100 µA | 2.77 | |||||
VISENSE | Current sense voltage | VIADJ = 1.2 V, TJ = 25°C to 125°C | 191 | 200 | 210 | mV |
VIADJ = 0.18 V, TJ = 25°C to 125°C | 21.4 | 30.0 | 40.0 | |||
IIADJ = 1 µA, TJ = 25°C to 125°C | 285 | 300 | 309 | |||
IIADJ = 100 µA, TJ = 25°C to 125°C | 286 | 300 | 309 | |||
Current sense voltage level | 180 mV ≤ VIADJ ≤ 1.8V | VIADJ/6 | ||||
HIGH-SIDE MOSFET (BOOT, PH) | ||||||
RDS(on) | On-resistance | VVIN = 4.5 V, (VBOOT – VPH) = 3.5 V | 255 | mΩ | ||
(VBOOT – VPH) = 6 V | 220 | 375 | ||||
VBOOT | BOOT-PH voltage | VPDIM = 3V | 6 | V | ||
IBOOT | BOOT-PH current | VPDIM = 0V, (VBOOT – VPH) = 5V | 93.9 | µA | ||
VBOOTUV | BOOT-PH under voltage lockout | Rising threshold | 2.25 | 2.81 | V | |
Falling threshold | 1.42 | 1.99 | ||||
tON(min) | Minimum on time | VCOMP = 0 | 140 | ns | ||
ERROR AMPLIFIER (ISENSE, COMP) | ||||||
Input bias current | VISENSE = 200 mV | 20 | nA | |||
gM(ea) | Transconductance gain | VIADJ = 1.2 V, 180 mV < VISENSE < 220 mV, VCOMP = 1 V | 331 | µA/V | ||
DC gain | VIADJ = 1.2 V , VISENSE = 0.2 V | 10 | kV/V | |||
Bandwidth | 2.7 | MHz | ||||
Source/sink current | VIADJ = 1.2 V , VCOMP = 1 V, VISENSE = 200 mV ± 100 mV |
±28 | µA | |||
CURRENT LIMIT | ||||||
Current limit threshold | 6 | A | ||||
THERMAL SHUTDOWN | ||||||
TSD | Thermal shutdown | 165 | °C | |||
Thermal shutdown hysteresis | 20 | |||||
TIMING RESISTOR AND EXTERNAL CLOCK (RT/CLK) | ||||||
VRT | RT/CLK regulated voltage | RRT = 200 kΩ | 474 | 500 | 513 | mV |
fSW | Switching frequency | VVIN = 6 V, RRT = 200 kΩ | 447 | 557 | 648 | kHz |
RT/CLK high threshold | VVIN = 6 V | 1.49 | 1.81 | V | ||
RT/CLK low threshold | VVIN = 6 V | 0.63 | 1.02 | V | ||
PWM DIMMING (PDIM) | ||||||
IPDIM | PDIM source current | VPDIM = 0 | 1.04 | µA | ||
VIH | High-level input voltage | 1.34 | 1.45 | V | ||
VIL | Low-level input voltage | 0.79 | 0.88 |
MIN | NOM | MAX | UNIT | |||
---|---|---|---|---|---|---|
TIMING RESISTOR AND EXTERNAL CLOCK (RT/CLK) | ||||||
RT/CLK falling edge to PH rising edge delay | Measured at 500 kHz with RT resistor in series, VVIN = 6 V | 92.1 | ns | |||
Phase loop (PLL) lock-in time | fSW = 500 kHz | 100 | µs | |||
PWM DIMMING (PDIM) | ||||||
tRISE | Rising propagation delay | 305 | ns | |||
tFALL | Falling propagation delay | 535 |
1.5 A LED Current | 4 LEDs in Series | VIADJ = 1.8 V |
fSW = 570 kHz | VOUT = 13.1 V |
1.5 A LED Current | 3 LEDs in Series | |
VOUT = 9.9 V |
VIN = 12 V | ||
VVIN = 12 V | ||
1.5 A LED Current | 3 LEDs in Series | VIADJ = 1.8 V |
VOUT = 9.9 V |
1.5 A LED Current | 3 LEDs in Series | VIADJ = 1.8 V |
250 Hz PWM Frequency | VOUT = 9.9 V |
VIADJ = 1.8 V | ||
TJ = 25°C | ||