MAX17500AEVKIT Maxim Integrated Products, MAX17500AEVKIT Datasheet - Page 5

• Manufacturer Part Number: MAX17500AEVKIT
• Description: Power Management Modules & Development Tools
• Manufacturer: Maxim Integrated Products

Figure 1. Efficiency vs. Output Current I
Figure 3. V
resistor (0805 size). Refer to the Undervoltage Lockout
section in the MAX17499/MAX17500 IC data sheet for
instructions on selecting resistor R3, as determined by
the following equation:
where V
between the +VIN and -VIN PCB pads on the EV kit and
V
UVLO
= +1.23V (typ).
IN
OUT1
6.0
5.8
5.6
5.4
5.2
5.0
4.8
4.6
4.4
4.2
4.0
90
80
70
60
50
40
30
20
10
is the +36V to +72V supply voltage applied
0
R3 = ((V
0
0
V
(+5V) Output-Voltage Regulation
EFFICIENCY vs. OUTPUT CURRENT
OUT2
V
OUT2
_________________________________________________________________ Maxim Integrated Products 5
V
V
V
= +15V, 100mA
0.3
OUT2
0.3
OUT 1
OUT2
= +15V, 100mA
IN
= +15V, 25mA
= +15V, 25mA
- V
REGULATION vs. I
0.6
0.6
UVLO
I
OUT1
I
OUT1
(A)
(A)
0.9
0.9
)/V
UVLO
OUT1
1.2
OUT 1
1.2
) x R4
(+VIN = +48V)
1.5
1.5
Figure 2. Output-Voltage Transient at Power-Up (+VIN = +48V,
Channel 1 = V
(I
Figure 4. V
The EV kit features an open-drain UVLO flag output at
the UFLG PCB pad. The UFLG signal can be used to
indicate that a UVLO condition has occurred. A voltage
source of up to +25V can be connected to the PCB’s
FLG_PULL PCB pad, which, along with resistor R13,
pulls up the UFLG signal. Refer to the UVLO Flag (UFLG)
section in the MAX17499/MAX17500 IC data sheet for
instructions and additional information on using the
device’s UFLG pin.
OUT2
Evaluates: MAX17500A
= 25mA))
Flyback Converter Waveforms
18.0
17.6
17.2
16.8
16.4
16.0
15.6
15.2
14.8
14.4
14.0
OUT2
OUT1
0
OUTPUT TURN-0N VOLTAGE TRANSIENT
(+15V) Output-Voltage Regulation
V
OUT1
V
(I
0.02
OUT2
= +5V, 1.5A
OUT1
V
UVLO Flag (UFLG and FLG_PULL)
OUT1
REGULATION vs. I
0.04
= +5V, 150mA
= 150mA), and Channel 2 = V
I
OUT2
2ms
(A)
V
V
0.06
OUT1
OUT2
OUT2
0.08
0.10
2V/div
5V/div
OUT2