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부품번호 | NCP1395A 기능 |
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기능 | High Performance Resonant Mode Controller | ||
제조업체 | ON Semiconductor | ||
로고 | |||
전체 27 페이지수
www.DataSheet4U.com
NCP1395A/B
High Performance Resonant
Mode Controller
The NCP1395A/B offers everything needed to build a reliable and
rugged resonant mode power supply. Its unique architecture includes
a 1.0 MHz Voltage Controller Oscillator whose control mode brings
flexibility when an ORing function is a necessity, e.g. in multiple
feedback paths implementations. Protections featuring various
reaction times, e.g. immediate shutdown or timer−based event,
brown−out, broken optocoupler detection etc., contribute to a safer
converter design, without engendering additional circuitry
complexity. An adjustable deadtime also helps lowering the
shoot−through current contribution as the switching frequency
increases.
Finally, an onboard operational transconductance amplifier allows
for various configurations, including constant output current working
mode or traditional voltage regulation.
Features
• High Frequency Operation from 50 kHz up to 1.0 MHz
• Selectable Minimum Switching Frequency with "3% Accuracy
• Adjustable Deadtime from 150 ns to 1.0 ms
• Startup Sequence via an Adjustable Soft−Start
• Brown−Out Protection for a Simpler PFC Association
• Latched Input for Severe Fault Conditions, e.g. Overtemperature
or OVP
• Timer−Based Input with Auto−Recovery Operation for Delayed
Event Reaction
• Enable Input for Immediate Event Reaction or Simple ON/OFF
Control
• Operational Transconductance Amplifier (OTA) for Multiple
Feedback Loops
• VCC Operation up to 20 V
• Low Startup Current of 300 mA Max
• Common Collector Optocoupler Connection
• Internal Temperature Shutdown
• B Version Features 10 V VCC Startup Threshold for Auxiliary
Supply Usage
• Easy No−Load Operation and Low Standby Power Due to
Programmable Skip−Cycle
• These are Pb−Free Devices*
Typical Applications
• LCD/Plasma TV Converters
• High Power Ac−DC Adapters for Notebooks
• Industrial and Medical Power Sources
• Offline Battery Chargers
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MARKING
DIAGRAMS
16
1
PDIP−16
P SUFFIX
CASE 648
16
NCP1395xP
AWLYYWWG
1
16
1
SO−16
D SUFFIX
CASE 751B
1395xDR2G
AWLYWW
x
A
WL
YY, Y
WW
G
= A or B
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
PIN CONNECTIONS
Fmin 1
Fmax 2
DT 3
Css 4
FB 5
Ctimer 6
BO 7
AGnd 8
16 NINV
15 Out
14 Slow Fault
13 Fast Fault
12 Vcc
11 B
10 A
9 PGnd
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 25 of this data sheet.
*For additional information on our Pb−Free strategy
and soldering details, please download the ON
Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2006
March, 2006 − Rev. 1
1
Publication Order Number:
NCP1395/D
NCP1395A/B
Vdd
Fmin
Imin
Vfb = < Vfb_off
Vref +
−
C IDT
+
DT Adj.
I = Imax for Vfb = 5 V
I = 0 for Vfb < Vfb_off
Vdd
Fmax
Imax
Vfb = 5
Vdd
Vref
Itimer
If FAULT Itimer else 0
SS
S
D
Q
Clk Q
R
50% DC
Temperature
Shutdown
Vref
FF
BO
Reset
PON
Reset
Fault
Timeout
Fault
SS Reset on
A Version Only
Timer
+
Vref
+
−
Vdd
ISS
SS
Timeout
Fault
PON
Reset
Fault
20 V
UVLO
Fault
FB
RFB
−
+
+
Vfb_fault
IDT
DT
BO
AGND
Vdd
IBO
+
−
+
VBO
+
G=1
−
> 0 only if
V(FB) > Vfb_off
Vdd
+
Vfb_off
Vref
Deadtime
Adjustment
+
−
+
Vlatch
20 ms Noise
Filter
PON Reset
Figure 2. Internal Circuit Architecture
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4
Vref_FB
+
NINV
− + gm
OUT
+ Slow
− Fault
+
Vref Fault
+
−
Fast
Fault
+
Vref Fault
VCC
B
A
PGND
4페이지 NCP1395A/B
ELECTRICAL CHARACTERISTICS (continued) (For typical values Tj = 25°C, for min/max values Tj = 0°C to +125°C,
Max TJ = 150°C, VCC = 11 V, unless otherwise noted.)
Characteristic
Pin Symbol Min Typ
Max
Unit
TIMERS
Timer Charge Current
6 Itimer − 150 − mA
Timer Duration with a 1.0 mF Capacitor and a 1.0 MW Resistor
6 T−timer − 25 − ms
Timer Recurrence in Permanent Fault, Same Values as Above
6 T−timerR − 1.4 −
s
Voltage at which Pin 6 Stops Output Pulses
6
VtimerON
3.7
4.1
4.5
V
Voltage at which Pin 6 Restarts Output Pulses
6 VtimerOFF 0.9 1.0 1.1
V
Soft−Start Ending Voltage, VFB = 1.0 V
Soft−Start Charge Current
4 VSS − 2.0 − V
4 ISS 75 95 115 mA
Note 5
Soft−Start Duration with a 220 nF Capacitor (Note 4)
4 T−SS − 5.0 − ms
PROTECTION
Reference Voltage for Fast Input
13 VrefFaultF 1.0 1.05 1.1
V
Reference Voltage for Slow Input
14 VrefFaultS 0.98 1.03 1.08 V
Hysteresis for Fast Input
13 HysteFaultF
−
50 − mV
Hysteresis for Slow Input
14 HysteFaultS
−
40 − mV
Propagation Delay for Fast Fault Input Drive Shutdown
13 TpFault − 70 120 ns
Brown−Out Input Bias Current
7 IBObias − 0.02 − mA
Brown−Out Level
7
VBO
0.98 1.03 1.08
V
Hysteresis Current, Vpin 7 > VBO – A Version
7
IBO_A
23 28 33 mA
Hysteresis Current, Vpin 7 > VBO – B Version
7
IBO_B
70 83 96 mA
Latching Voltage
7
Vlatch
3.7 4.1 4.5
V
Temperature Shutdown
−
TSD
140 −
− °C
Hysteresis
− TSDhyste −
40 − °C
4. The A version does not activate soft−start when the fast−fault is released, this is for skip cycle implementation. The B version does activate
the soft−start upon release of the fast−fault input.
5. Minimum current occurs at TJ = 0°C.
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7
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부품번호 | 상세설명 및 기능 | 제조사 |
NCP1395A | High Performance Resonant Mode Controller | ON Semiconductor |
NCP1395B | High Performance Resonant Mode Controller | ON Semiconductor |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |