NCP1395ADR2G ON Semiconductor, NCP1395ADR2G Datasheet - Page 20

• Manufacturer Part Number: NCP1395ADR2G
• Description: IC CTRLR PWM OVP 16SOIC
• Manufacturer: ON Semiconductor

Specifications of NCP1395ADR2G

• Pwm Type: Voltage Mode
• Number Of Outputs: 1
• Frequency - Max: 1MHz
• Duty Cycle: 52%
• Voltage - Supply: 10.3 V ~ 20 V
• Buck: No
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 16-SOIC (3.9mm Width)
• Frequency-max: 1MHz
• Switching Frequency: 50 KHz to 1 MHz
• Mounting Style: SMD/SMT
• Duty Cycle (max): 52 %
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: NCP1395ADR2G; NCP1395ADR2GOSTR

Brown−Out Protection
resonant converter from low DC input voltages. Below a
given level, the controller blocks the output pulses, above
it, it authorizes them. The internal circuitry, depicted by
Figure 42, offers a possibility to observe the high−voltage
Configuration with an Offset Current Source
The Brown−Out circuitry (BO) offers a way to protect the
Rupper
Rlower
Figure 45. The Internal Brown−Out
−4.00
−8.00
4.00
3.00
2.00
1.00
16.0
12.0
8.00
4.00
8.00
4.00
Vbulk
0
0
0
1
vct
IBO
BO
2
56.2u
Vdd
clock
+
VBO
ON/OFF
5
+
−
difference
Figure 44. Typical Oscillator Waveforms
BO
65.9u
http://onsemi.com
250
50.0
450
350
150
time in seconds
16.0
12.0
8.00
4.00
20
0
Figure 46. Simulation Results for 350/250 ON/OFF Levels
75.7u
1
(HV) rail. A resistive divider made of Rupper and Rlower,
brings a portion of the HV rail on pin 7. Below the turn−on
level, a current source IBO is off. Therefore, the turn−on
level solely depends on the division ratio brought by the
resistive divider.
vin
20.0u
Vin
2
vcmp
351 volts
60.0u
BO
85.4u
time in seconds
100u
140u
95.1u
250 volts
180u
1
2
5
2
1