HA16116 Hitachi Semiconductor, HA16116 Datasheet - Page 12

• Manufacturer Part Number: HA16116
• Description: Switching Regulator for Chopper Type DC/DC Converter
• Manufacturer: Hitachi Semiconductor

HA16116FP/FPJ, HA16121FP/FPJ
12
PWM pulse
output
DC/DC converter output
(positive in this example)
Starts from clamp
voltage of 0.8 V
Step-down/
inverting
channel
Booster
channel
(voltage)
V
V
V
TH
TL
t = 0 (here IC is on)
Triangle wave
Figure 3.2 Soft Start (SST) Setting
t
0.8
t
A
PWM output
pulse starts to
widen
t
B
V
SST
t = t
SST
Steady-state
operation
1.6 V
1.0 V
0 V
V
0 V
V
0 V
V
0 V
O
IN
IN