HA16158P_07 RENESAS [Renesas Technology Corp], HA16158P_07 Datasheet - Page 16
HA16158P_07
Manufacturer Part Number
HA16158P_07
Description
PFC & PWM Control IC
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HA16158P_07.pdf
(24 pages)
- Current page: 16 of 24
- Download datasheet (228Kb)
HA16158P/FP
5. Power Saving in Standby State (for PWM Control)
When the output load is light, as in the standby state, the operating frequency of the PWM control section is
automatically decreased in order to reduce switching loss.
Standby detection is performed by monitoring the PWM-COMP voltage, and the operating frequency is decreased to a
maximum of 1/64 of the reference frequency determined by an external timing resistance.
As standby detection is performed on a reference frequency pulse-by-pulse basis, the frequency varies gently according
to the output load.
Rev.2.00 Jan 30, 2007 page 16 of 23
PWM-COMP
PWM-OUT
RT
9
Oscillator
f
Power Saving Peripheral Circuit
Divider
f/64
R
S
Q
reset
Figure 6
PWM
Logic
Power Saving
−
+
−
+
driver
1.7V
15
16
2
PWM-OUT
PWM-COMP
PWM-CS
f/64
VREF
1.7V
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