HA16116FP Datasheet, PDF (6/34 Pages) Hitachi Semiconductor – Switching Regulator for Chopper Type DC/DC Converter

HA16116FP/FPJ, HA16121FP/FPJ
Function and Timing Chart
Relation between triangle wave and PWM output (in steady-state operation)
C_T triangle wave
Dead band
voltage
E/O Error amp output
1.6 V typ
1.0 V typ
PWM
pulse
output
Booster
channel
output
(HA16121-
Ch 2) only
Step-down
or inverting
output
(HA16116-
Ch 1, Ch 2/
HA16121-Ch 1)
t_{ON tOFF}
T
V_IN (on)
GND (off)
This pulse
is for
N-channel
power MOS
FET gate
driving.
V_IN (off)
GND (on)
This pulse
is for
P-channel
power MOS
FET gate
driving.
Note: On duty = t _ON /T, where T = 1/f _OSC.
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