HA16116FP Datasheet, PDF (27/34 Pages) Hitachi Semiconductor – Switching Regulator for Chopper Type DC/DC Converter

• Error Amplifier Block
60
40
20
HA16116FP/FPJ, HA16121FP/FPJ
Open Loop Gain Characteristics
A_VO
0
φ
45
90
0
1k
3k
10 k 30 k 100 k 300 k 1 M
Error amplifier input frequency f_IN (Hz)
Common Mode Input Characteristics
+100
BW
3M
135
180
10 M
0
−100
−200
−_+EA
V_O
V_I ^{− +}
Vref
−300
0
1
2
3
4
Input voltage V_I (V)
• On Duty Characteristics
On Duty Characteristics
100
Step-down
80 ^{PWM output}
(HA16116-1, 2ch
HA16121-1ch)
60
600 ^kHz
40
On Duty Characteristics
100
Boost PWM output
(HA16121-2 ch)
80
60
40
20
20
0
0.8 1.0 1.2 1.4 1.6 1.8
V_DB or V_E/O (V)
Notes: 1. The percentage of a single timing cycle
during which the output is low.
0
0.8 1.0 1.2 1.4 1.6 1.8
V_DB or V_E/O (V)
2. The percentage of a single timing cycle
during which the output is high.
27