HUMMER SERIES
40 OR 70 WATTS
HOLD
UP
M
ODULE
ABSOLUTE MAXIMUM RATINGS
SYNC AND INHIBIT
Sync (HUM-70 only)
Output Power
• Range 525 min to 625 max kHz
• Duty cycle 40% min to 60% max
• Logic low 0.8V, max
• HUM-40 40 watts
* HUM-70 70 watts
Input Voltage Range
• 12 to 50 continuous
• 80 V for up to 50 ms
Lead Soldering Temperature (10 sec per lead)
• 300°C
Storage Temperature Range (Case)
• –65°C to +135°C
• Logic high 4.5 V, min
• Referenced to input common
• If sync is not used, leave unconnected
Inhibit TTL Open Collector
• Logic low (output disabled)
Logic low voltage 0.8 V max
Inhibit pin current 15 mA
• Referenced to input common
• Logic high (output enabled)
Open circuit voltage 10 V typical
RECOMMENDED OPERATING CONDITIONS
Input Voltage Range
• 12 to 40 VDC continuous
Case Operating Temperature (Tc)
• –55 to +125°C full power
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified.
HUM-40
MIN
HUM-70
PARAMETER
OUTPUT VOLTAGE
OUTPUT POWER
CONDITION
CEXT TERMINAL
CONTINUOUS
PEAK, 2 SEC
MAX
40
MIN
MAX
40
UNITS
39
—
—
12
—
—
—
—
39
—
—
12
—
—
—
—
VDC
40
70
W
60
100
50
INPUT VOLTAGE
CONTINUOUS
TRANSIENT 50 ms
2 MHz Bandwidth
50
VDC
V
80
80
INPUT RIPPLE CURRENT
INPUT CURRENT
100
90
100
90
mA p-p
V
= 28V, VCS OPEN
IN
mA
A
V
= 28V, INHIBITED
= 12V, FULL LOAD
= 40V, FULL LOAD
= 22V, FULL LOAD
= 12V, FULL LOAD
FULL LOAD
10
10
IN
V
—
92
87
80
4.6
—
—
—
—
92
87
80
8.6
—
—
—
IN
V
V
V
IN
IN
IN
EFFICIENCY
%
HOLD-UP TIME
15
14.0
11.5
22
—
14.5
12.0
24
8.6
14.0
11.5
22
—
14.5
12.0
24
µs/µF
VDC
POWER FAIL
HIGH, OPEN CIRCUIT
LOW, SHORT RETURN
OPEN
FLAG THRESHOLD
CAPACITOR VOLTAGE
CONTROLLED SWITCH
CAP CHARGED
VDC
VDC
CLOSED
18
19
18
19
HIGH, OPEN CIRCUIT
LOW, SHORT RETURN
34
36
34
36
FLAG THRESHOLD
19.5
20.5
19.5
20.5
Notes
1. Full load for specifications is 40 W for HUM-40 and 70 W for HUM-70.
B6-4
CRANE [ Crane Aerospace & Electronics. ]
