PD-2

REV.: 1/2016

www.recom-power.com

DC/DC Converter

RP20-F

Series

BASIC CHARACTERISTICS

Parameter

Condition

Min.

Typ.

Max.

Input Voltage Range

nom. Vin = 12V

nom. Vin = 24V

nom. Vin = 48V

9VDC

18VDC

36VDc

12VDC

24VDC

48VDC

18VDC

36VDC

75VDC

Undervoltage Lockout (ULVO)

none

L-C Type

nominal Vin and full load

20mAp-p

Input Surge Voltage

Vin = 12V, 100ms max.

Vin = 24V, 100ms max.

Vin = 48V, 100ms max.

36VDC

50VDC

100VDC

Start-up time

Power up

Remote ON/OFF

10ms

10ms

Operating Frequency Range

450kHz

500kHz

550kHz

Single

Dual

0%

±10%

Optional Output Trim

±10%

Ripple and Noise

measured by 20MHz bandwidth

with a 0.1µF/50V MLCC

Single 3.3Vout

Single 5Vout, 12Vout, 15Vout

60mVp-p

75mVp-p

Dual All

100mVp-p

Positive Logic

DC-DC ON

DC-DC OFF

Open or 3.0V < Vr < 12V

Short or 0V < Vr < 1.2V

Negative Logic

DC-DC ON

DC-DC OFF

Short or 0V < Vr < 1.2V

Open or 3.0V < Vr < 12V

Input current of Remote pin (CTRL)

DC-DC OFF

2.5mA

DC-DC ON

-0.5mA

0.5mA

continued on next page

Notes:

Note5: An external filter capacitor is required for normal operation. The capacitor should be capable of handling 1A

ripple current for 48V/24V models. RECOM suggest: Nippon chemi-con KY series, 220µF/100V, ESR 90m

Ω.

Note6: Simulated source impedance of 12µH. 12µH inductor in series with +Vin.

Note7: The RP20-F series requires a minimum of 10% loading on the output to maintain specified regulation. Operation

under no-load condition will not damage these devices, however they may not meet all listed specification.

Note8: The ON/OFF control function can be positive or negative logic. The pin voltage is referenced to -Vin pin.

Efficiency vs. Output Current

Efficiency vs. Input Voltage

9Vin

12Vin

18Vin

Output Current [%]

10

50

40

45

55

60

65

70

75

95

90

85

20

40

60

80

100

30

50

70

90

80

Input Voltage [VDC]

9

80

82

84

86

88

92

11

12

14

16

18

10

13

15

17

90

RP20-1205SF