ha16150p Renesas Electronics Corporation., ha16150p Datasheet - Page 16

• Manufacturer Part Number: ha16150p
• Description: High-speed Current Mode Push-pull Pwm Control Ic
• Manufacturer: Renesas Electronics Corporation.

HA16150T/P
6. Current Limiter Level
The drooping characteristic of the power supply output can be adjusted by adjusting the CSLIM pin voltage.
For example, the drooping characteristic can easily be adjusted, as shown in the figure below, by setting VREF to a
divided value with resistances R1 and R2 and connecting adjustment resistance Rx in parallel to R2.
The graph below shows examples of power supply output drooping characteristic adjustment in a push-pull converter.
As shown in this graph, the point at which the power supply output current limit begins to be applied can be adjusted by
adjustment of the CSLIM pin voltage.
Rev.3.00 Jan 30, 2007 page 16 of 24
3.60
3.40
3.20
3.00
2.80
2.60
2.40
2.20
2.00
Figure 8 Adjustment of Power Supply Output Drooping Characteristic
0.0
Rx
R1
15k
R2
12k
VREF
2.0
Rx: 15k
(V
Figure 7 CSLIM Peripheral Circuit
CSLIM
16
= 1.55V)
E-amp.
EOUT
+
−
4.0
Rx: 24k
(V
Vref
CSLIM
3
Iout (A)
= 1.75V)
4
CSLIM
6.0
Rx: 33k
(V
CSLIM
Vcc
= 1.85V)
Rx: 47k
(V
CSLIM
2R
8.0
R
= 1.95V)
CS
Comp.
+
−
10.0
5 CS
Rx: open
(V
CSLIM
= 2.22V)