HA16148PS.pdf 데이터시트 (총 20 페이지) - 파일 다운로드 HA16148PS 데이타시트 다운로드

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HA16148PS
AC/DC Switching Converter Controller IC
With High-Voltage Power MOS FET
ADE-204-034A (Z)
Preliminary
2nd Edition
Oct. 2000
Description
The HA16148PS is an IC with a high-voltage power MOS FET and current-mode type PWM controller
mounted in a DILP-8 (DP-8) standard package, suitable for low-power power supplies in the
10 W class and below.
The HA16148PS includes an energy-saving mode for holding down power consumption when on standby
(no load). When the energy-saving mode is entered, the operating frequency is reduced to 1/4 the normal
frequency, reducing power consumption. A starter circuit is also provided on-chip, eliminating the need for
the external start-up resistance needed with previous controller ICs. The starter circuit in this IC is turned
off automatically after the IC starts up, enabling the start-up resistance power consumption to be decreased.
The HA16148PS includes a soft start circuit, OVP circuit, and remote on/off circuit, making it possible to
configure a simple protection circuit with fewer external parts than previously. Also provided are a current
sense resistance and a leading edge blanking circuit that masks spike noise on current sense input, making
noise reduction in a power supply set comparatively easy.
The HA16148PS is equipped with an error amp circuit inverting input (FB) pin and output (COMP) pin,
enabling special-purpose design for both flyback system secondary-side output voltage detection and
primary-side back-up transformer output voltage detection types.
Features
Built-in high-voltage power MOS FET
Energy-saving mode (power saving through reduction of operating frequency to 1/4 normal frequency
when on standby)
Built-in starter circuit, reducing power loss of start-up resistance when on standby (external start-up
resistance not necessary)
Built-in soft start circuit, eliminating need for external connection
Remote on/off function, enabling power saving by halting PWM output without turning off power
supply
Built-in current sense resistance and leading edge blanking circuit, for sense-resistance-less and noise-
cancellation-filter-less implementation
Built-in over voltage protection circuit
Built-in over temperature protection circuit
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HA16148PS
Pin Arrangement
DRAIN 1
VDD 3
FB 4
DILP-7
(DP-7)
8 SOURCE
7 SGND
6 CT
5 COMP
(Top view)
Pin Functions
Pin No.
1
2
Pin Name
DRAIN
3 VDD
4 FB
5 COMP
6 CT
7 SGND
8 SOURCE
Pin Function
On-chip power MOS FET drain pin / starter circuit input pin
This pin has been omitted for increased spacing between the drain
voltage on pin 1 and the VDD voltage on pin 3.
Power supply voltage input pin
Error amplifier inverting input pin / OVP latch circuit input pin
Error amplifier output pin
Timing capacitance connection pin / on/off circuit input pin
Primary-side common connection pin
On-chip power MOS FET source pin
2
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Block Diagram
VDD
HA16148PS
VDD
CT
Oscillator
+
ON/OFF
Comp.
Vref
Generator
1/4 Divider
CK
+
DQ
Vref
Frequency Down
Comp.
FB
+
E-AMP
1/3
Attenuator
VDD
RQ
+
S
OVP Latch
TSD
UVL
COMP
UVL
UVL
Starter
DRAIN
Driver
FF
+
CS
Comp.
Delay
Leading Edge
Vref Blanking
+
Soft Start
SOURCE
Rcs
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HA16148PS
Absolute Maximum Ratings (Ta = 25°C)
Item
Power MOS FET block
Controller block
Overall
Drain-source voltage
Maximum drain current
Power supply voltage
CT pin voltage
FB pin voltage
COMP pin voltage
Operating temperature
Junction temperature
Storage temperature
Symbol
VDS
I DS
VDD
VCT
VFB
VCOMP
Topr
Tjmax
Tstg
Rating
0.3 to 700
0.5
0 to 15
0 to VDD
0 to VDD
0 to 5
20 to +85
+150
55 to +150
Unit
V
A
V
V
V
V
°C
°C
°C
4
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HA16148PS
Electrical Characteristics (Tj = 25°C, VDD = 12 V, fosc1 = 100 kHz)
Item
Power
MOS FET
Starter
circuit
UVL circuit
Oscillation
circuit
Error
amplifier
Power
MOS FET
gate drive
circuit
Current
sense
circuit
OVP latch
circuit
Remote
on/off circuit
Soft start
circuit
f-down
comparator
Over
temperature
protection
circuit
Drain-source voltage
Drain-source on resistance
Start-up start drain voltage
Start-up charge current
Operation start power supply
voltage
Operation stop power supply
voltage
Operating power supply current
Normal mode operating frequency
F-down mode operating frequency
Maximum on duty
Open-loop voltage gain
Unity gain bandwidth
Output high voltage 1
Output high voltage 2
Output low voltage
Non-inverting input voltage
Output rise time
Output fall time
Output high voltage
Output low voltage
Current sense voltage gain
Current sense response time
Leading edge blanking time
OVP latch set voltage
OVP latch reset voltage
OVP latch current dissipation
Off mode start voltage
Symbol
BVDSS
RDS(on)
VDRN
ICHG
VTH
VTL
IDD
fosc1
fosc2
Dumax
AV
BW
VCOMPH1
VCOMPH2
VCOMPL
V(+)EA
tr
tf
VOH
VOL
AVCS
tpdcs
tBL
Vovp
Vovpr
Iovp
Voff
Min
700
55
125
10
7
88
23
70
50
4.5
4.3
3.4
4.2
3.6
Typ Max

12 20
75 95
250 500
11 12
89
2.5 4.0
100 112
26.5 30
75
65
550
5.0
4.8
0.3 0.7
3.8 4.2
100
80
10
0.5
3.0
200
300
5.0 5.8
4.0
1.1 1.7
3.8 4.0
Soft start time
tst (1.0) 2.0 (3.0)
F-down mode start voltage
Vfdcp 0.7 0.85 1.0
Over temperature protection start TSD
temperature
150
Unit
V
V
µA
V
Test Conditions
ID = 0.4 A
V
mA
kHz CT = 220 pF
kHz CT = 220 pF, VCOMP = 0 V
%
dB Rcomp = 220 k
kHz Rcomp = 220 k
V Iosource = 0 µA
V Iosource = 100 µA
V Iosink = 0 µA
V
ns CL = 1000 pF
ns CL = 1000 pF
V Iosource = 25 mA
V Iosink = 25 mA
V/V
ns Vcomp = 5.0 V
ns
V Vovp: FB pin voltage
V Vovpr: VDD pin voltage
mA VFB = 6.0 V
V Voff: CT pin voltage
ms Time from start-up to
max. duty
V
°C TSD: Power MOS FET
junction temperature
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