1 Features
• Qualified for automotive applications
• AEC-Q100 test guidance with the following results:
– Device temperature grade 2: –40°C to 105°C
ambient operating temperature range
– Electrical characteristics tested over –40°C to
125°C junction temperature range
– Device HBM ESD classification level H1C
– Device CDM ESD classification level C4B
• Dual adjustable output voltages up to 15V and
down to –15V
• 2A typical switch-current limit for boost and
inverter main switches
• High conversion efficiency
– Up to 91% at positive output rail
– Up to 85% at negative output rail
– Power-save mode at low load
• Independent enable inputs for power-up and
power-down Sequencing
• Control output for external PFET to support
complete supply Disconnect When Shut Down
• 2.7V to 5.5V input-voltage range
• Minimum 1.25MHz fixed-frequency PWM
operation
• Thermal shutdown
• Overvoltage protection on both outputs
• 0.2μA typical shutdown current
• Small 4mm × 4mm QFN-24 package (RGE) with
wettable flanks

2 Applications
• Small-to-medium size OLED displays
• (TFT) LCD, CCD bias supply

3 Description
The TPS65131-Q1 device is dual-output dc-dc
converter generating a positive output voltage up to
15V and a negative output voltage down to –15V
with output currents of typically 200mA, depending
on input-voltage to output-voltage ratio. With a total
efficiency up to 85%, the device is ideal for portable
battery-powered equipment. The input-voltage range
of 2.7V to 5.5V allows, for example, 3.3V and 5V rails
to power the TPS65131-Q1 device. The TPS65131-
Q1 device comes in a QFN-24 package with thermal
pad and wettable flanks. Requiring few and small
external components, the overall solution size can be
small.
The converter operates with a fixed-frequency PWM
control topology and, with power-save mode enabled,
uses a pulse-skipping mode at light load currents. In
operation, the typical overall device quiescent current
is only 500μA. In shutdown, the device draws typically
0.2μA. Independent enable pins allow power-up and
power-down sequencing for both outputs. The device
has an internal current limit, overvoltage protection,
and a thermal shutdown for highest reliability under
fault conditions.
The TPS65131-Q1 device is qualified for automotive
applications, according to AEC-Q100 temperature
grade 2. The electrical characteristics are tested
over –40°C to 125°C device junction temperature.
This, combined with lowest shutdown currents, small
solution size, package with thermal pad, plus good
efficiency and protection features, targets automotive
and industrial applications.