HA16114P Datasheet, PDF (35/38 Pages) Hitachi Semiconductor – Switching Regulator for Chopper Type DC/DC Converter

HA16114P/PJ/FP/FPJ, HA16120FP/FPJ
Overall Waveform Timing Diagram (for Application Example (1))
12 V
V_IN
0V
V_TM,
V_ON/OFF
2.1 V
1.4 V
V_TM,
V_ON/OFF
1.4 V
0.7 V
0.0 V
(V)
3.0
2.0
V_E/O,
V_CT,
V_DB
On
V_E/O
V_CT
sawtooth wave
On
On
On
On
Off Off Off Off
Off
1.0
V_DB
0.0
12 V
V_{CL 11.8 V}
0V
V_OUT ^{*1 12 V}
PWM
pulse _{0 V}
DC/DC output
(example for
positive
voltage)
Pulse-by-pulse
current limiting
IC operation
status
Soft start
Steady state
Overcurrent
detected;
intermittent
operation
Overcurrent
subsides;
steady-state
operation
Quick
shutdown
Power-up IC on
Power supply off,
IC off
Note: 1. This PWM pulse is on the step-down/inverting control channel (HA16114).
The booster control channel (HA16120) output consists of alternating L and H of the IC on cycle.
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