st1845rkg STMicroelectronics, st1845rkg Datasheet - Page 13

• Manufacturer Part Number: st1845rkg
• Description: Rad-tolerant Current Mode Pwm Controller
• Manufacturer: STMicroelectronics

ST1843 - ST1845
7
Figure 5.
Test circuit
Figure 4.
High peak currents associated with capacitive loads necessitate careful grounding
techniques. Timing and bypass capacitors should be connected close to pin 5 in a single
point ground. The transistor and 5 kΩ potentiometer are used to sample the oscillator
waveform and apply an adjustable ramp to pin 3.
Timing resistor vs. oscillator
frequency
Open loop test circuit
Doc ID 019049 Rev 1
Figure 6.
Output dead-time vs. oscillator
frequency
Test circuit
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