HA16116FP Datasheet, PDF (12/34 Pages) Hitachi Semiconductor – Switching Regulator for Chopper Type DC/DC Converter

HA16116FP/FPJ, HA16121FP/FPJ
V
(voltage)
Triangle wave
V_TH
V_SST
V_TL
Starts from clamp
voltage of 0.8 V
t _0.8
PWM output
pulse starts to
widen
t_A
t_B
Steady-state
operation
PWM pulse
output
Booster
channel
Step-down/
inverting
channel
DC/DC converter output
(positive in this example)
t = 0 (here IC is on)
t = t_SST
Figure 3.2 Soft Start (SST) Setting
1.6 V
1.0 V
0V
V_IN
0V
V_IN
0V
V_O
0V
12