NQ12T50SMA16 Datasheet, PDF (8/15 Pages) SynQor Worldwide Headquarters – 16A Non-Isolated, SMT DC/DC Converter with wide trim

Performance Curves
Non-Isolated
SMT Converter
9.6 - 14.4Vin 16A
5.0Vout
1.8Vout
0.9Vout
5.0Vout
1.8Vout
0.9Vout
100µ s/div
Figure 13: Output voltage response for 0.9V, 1.8V, 5.0V units to step-change
in load current (50-75-50% of Iout max; di/dt=0.1A/µ s). Load cap: 100µ F,
100mW ESR tant, 10µ F cer. Ch 1: Iout (5A/div), Ch 2-4: Vout (100mV/div).
100µ s/div
Figure 14: Output voltage response for 0.9V, 1.8V, 5.0V units to step-change
in load current (50-75-50% of Iout max; di/dt=3A/µ s). Load cap: 470µ F,
25mW ESR tant, 10µ F cer. Ch 1: Iout (5A/div), Ch 2-4: Vout (100mV/div).
See Fig. 16
1 µH
source
impedance
See Fig. 17
i_S
DC/DC
V_IN ^Converter
See Fig. 18
V_OUT
V_SOURCE
C*
10 µF
ceramic
capacitor
* See values for recommended external input capacitance.
Inductor optional as needed.
100 µF
100mW ESR
tantalum
capacitor
Figure 15: Test set-up diagram showing measurement points for Input
Reflected Ripple Current (Figure 16), Input Terminal Ripple Voltage
(Figure 17), and Output Voltage Ripple (Figure 18).
5.0Vout
3.3Vout
2.5Vout
1.8Vout
1.5Vout
1.2Vout
1 s/div
0.9Vout
Figure 17: Input Terminal Ripple Voltage at nominal input voltage and
rated load current (200 mV/div). Load capacitance: 10µ F ceramic cap
and 100µ F tantalum cap. Bandwidth: 20 MHz. See Figure 15.
Product # NQ12T50SMA16
Phone [phone]
5.0Vout
3.3Vout
2.5Vout
1.8Vout
1.5Vout
1.2Vout
0.9Vout
1 s/div
Figure 16: Input Reflected Ripple Current, is, through a 1 µ H source
inductor at nominal input voltage and rated load current (10 mA/div).
See Figure 15.
5.0Vout
3.3Vout
2.5Vout
1.8Vout
1.5Vout
1.2Vout
1 s/div
0.9Vout
Figure 18: Output Voltage Ripple at nominal input voltage and rated
load current (20 mV/div). Load capacitance: 10µ F ceramic cap and
100µ F tantalum cap.. Bandwidth: 20 MHz. See Figure 15.
Doc.# 005-2NS12TE Rev. A
5/28/04
Page 8