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PDF HA16108FP Data sheet ( Hoja de datos )
| Número de pieza | HA16108FP | |
| Descripción | PWM Switching Regulator for High-performance Voltage Mode Control | |
| Fabricantes | Hitachi Semiconductor | |
| Logotipo |  |
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HA16107P/FP, HA16108P/FP
PWM Switching Regulator for
High-performance Voltage Mode Control
Description
The IC products in this series are primary control switching regulator control IC’s appropriate for obtaining
stabilized DC voltages from commercial AC power.
These IC’s can directly drive power MOS FET’s, they have a timer function built in to the secondary
overcurrent protection, and they can perform intermittent operation or delayed latched shutdown as
protection operations in unusual conditions. They can be used to implement switching power supplies with
a high level of safety due to the wide range of built-in functionality.
Functions
• 6.45 V reference voltage
• Triangle wave generator
• Error amplifier
• Under voltage lockout protector
• PWM comparator
• Pulse-by-pulse current limitting
• Timer-latch current limitting (HA16107)
• ON/OFF timer function (HA16108)
• Soft start and quick shutdown
• Output circuit for power MOS FET driving
1 page  
Block Diagram
HA16107P/FP, HA16108P/FP
• HA16107P/FP
TL
16
E/O
15
140 A
IN (−)
NC
14 13
−
EA Error amp.
+
GND
12
IN (+)
11
ST
10
Vref
9
16 A
UVL1
H
L
VL VH
4A
RQ
S
On/Off latch
(VTH = 7 V)
6.45 V
zener type
Ref.
voltage
Gen.
VIN 34 V
UVL2
OH
V
P
L 4V 5V
Vref
UVL2
UVL1
ST
+ + − PWM Comparator
Triangle waveform
UVL1 and UVL2
Pulse-by-pulse latch
Triangle waveform OSC
QCLM
QR
QS
OUT
VC VE
Vref
Current
limiter
Triangle waveform
Latch reset pulse
ON duty pulse
3.4 V 10 A
12 3 4 56 7 8
VIN
OUT
CL (+)
VE
CL (−)
RT1
CT
RT2
• HA16108P/FP
ON/OFF
16
E/O
15
140 A
IN (−)
14
−
EA Error amp.
+
NC
13
GND
12
IN (+)
11
ST
10
Vref
9
16 A
UVL1
H
L
VL VH
4A
RQ
S
On/Off latch
(VTH = 7 V)
VIN 34 V
6.45 V
zener type
Ref.
voltage
Gen.
O
V
P
UVL2
H
L
4V 5V
Vref
UVL2
UVL1
ST
+ + − PWM Comparator
Triangle waveform
UVL1 and UVL2
Pulse-by-pulse latch
Triangle waveform OSC
QCLM
QR
QS
OUT
VC VE
Vref
Current
limiter
Triangle waveform
Latch reset pulse
ON duty pulse
3.4 V 10 A
1 2 34 5
VIN
OUT
CL (+)
VE
CL (−)
Note: Dotted lines apply to the SOP package model (pins 4, 5, and 13: ground)
6
RT1
7
CT
8
RT2
5
5 Page 
HA16107P/FP, HA16108P/FP
Undervoltage Lockout and PWM Output
The undervoltage lockout function turns off the PWM pulse output when the controller’s supply voltage
goes below a designated value. These ICs have two undervoltage lockout circuits. The UVL1 circuit
senses the supply voltage VIN. The UVL2 circuit senses the Vref voltage. A feature of these ICs is that
PWM output is turned on only when both voltages are above designated values. Otherwise, the IC operates
in standby mode.
The two built-in undervoltage lockout circuits make it possible to configure an extremely safe power
supply system. PWM output will shut down under a variety of abnormal conditions, such as if Vref is
shorted to ground while VIN is applied.
• UVL1 (VIN and Vref)
IIN 9.5 V
16.2 V
*1
0 10 V
Vref
*2
0 10 V
• UVL2 (Vref and PWM output)
20 V
30 V
6.45 V
20 V
30 V
34 V
VIN
Notes: 1. Breakdown voltage of
the internal Zener
diode (Vz = 34 V typ).
2. Hysteresis characteristic.
VIN
Vref
0
OUT
6.45 V
5V
4V
10 V
20 V
30 V
Operating region
VIN
0
10 V
20 V
30 V
PWM output shut-down region
• UVL1 and UVL2
VIN (UVL1)
Vref (UVL2)
L HH
L LH
PWM OUT
L L OUT
Standby mode
Note: Double circles indicate standby mode.
VIN
L
H
L
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet HA16108FP.PDF ] | |
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