Datasheet

www.ti.com
V
I
= 3.6 V to 4.2 V, R
L
= 33 
V
POS
= 8 V
t − Time − 2 ms/div
Input Voltage
500 mV/div, AC
Output Voltage
200 mV/div, AC
V
I
= 3.6 V to 4.2 V, R
L
= 50 
V
NEG
= −8 V
t − Time − 2 ms/div
Input Voltage
500 mV/div, AC
Output Voltage
200 mV/div, AC
V
POS
= 8 V, V
I
=3.6 V,
R
L
= 80 
t − Time − 200 s/div
Output Voltage
5 V/div, DC
Enable
5 V/div, DC
Inductor Current
500 mA/div, DC
Voltage at SW
5 V/div, DC
V
NEG
= −8 V, V
I
=3.6 V,
R
L
= 80 
t − Time − 500 s/div
Output Voltage
5 V/div, DC
Enable
10 V/div, DC
Inductor Current
500 mA/div, DC
Voltage at SW
10 V/div, DC
DETAILED DESCRIPTION
TPS65130, TPS65131
SLVS493B – MARCH 2004 – REVISED SEPTEMBER 2004
TYPICAL CHARACTERISTICS (continued)
LINE TRANSIENT RESPONSE LINE TRANSIENT RESPONSE
Figure 49. Figure 50.
START-UP AFTER ENABLE START-UP AFTER ENABLE
Figure 51. Figure 52.
The TPS65130/1 operates with an input voltage range of 2.7 V to 5.5 V and can generate both a positive and
negative output. Both converters work independently of each other. They only share a common clock and a
common voltage reference. Both outputs are seperately controlled by a fixed-frequency, pulse-width-modulated
(PWM) regulator. In general, each converter operates at continuous conduction mode (CCM). At light loads, the
negative converter can enter discontinuous conduction mode (DCM). As the load current decreases, the
converters can enter a power-save mode if enabled. This works independently at both converters. Output
voltages can go up to 15 V at the boost output and down to –15 V at the inverter output.
20