MAX5932 MAXIM [Maxim Integrated Products], MAX5932 Datasheet
MAX5932
Available stocks
Related parts for MAX5932
MAX5932 Summary of contents
Page 1
... Rev 0; 4/04 Positive High-Voltage, Hot-Swap Controller General Description The MAX5932 is a fully integrated hot-swap controller for +9V to +80V positive supply rails. The MAX5932 allows for the safe insertion and removal of circuit cards into a live backplane without causing glitches on the back- plane power-supply rail. This device is pin and function compatible to LT1641-1 ...
Page 2
Positive High-Voltage, Hot-Swap Controller (Voltages referenced to GND) V .........................................................................-0.3V to +85V CC SENSE, FB, ON ..........................................-0. TIMER, PWRGD......................................................-0.3V to +85V GATE ......................................................................-0.3V to +95V Maximum GATE Current ....................................-50mA, +150mA Maximum Current into Any Other Pin................................±50mA Stresses beyond ...
Page 3
Positive High-Voltage, Hot-Swap Controller (V = +24V, GND = 0V -40°C to +85°C, unless otherwise noted. Typical values are PARAMETER SYMBOL ON Low-to-GATE Low Propagation Delay ON High-to-GATE High Propagation Delay FB Low-to-PWRGD Low ...
Page 4
... Positive High-Voltage, Hot-Swap Controller MAX5932 FB SENSE 5V PWRGD GATE 5kΩ TIMER GND Figure 1. Test Circuit 1.313V FB t PLHFB PWRGD 1V Figure PWRGD Timing Test Circuit and Timing Diagrams 24V 1.313V ON 5V GATE 10nF Figure GATE Timing 1.233V V - SENSE 47mV CC t PHLFB ...
Page 5
Positive High-Voltage, Hot-Swap Controller (V = +48V +25°C, unless otherwise noted vs 2.7 2.4 2.1 1 +85° +25°C A 1.5 1.2 0 -40°C A 0.6 ...
Page 6
Positive High-Voltage, Hot-Swap Controller (V = +48V +25°C, unless otherwise noted TIMER PULLUP CURRENT vs. TEMPERATURE -60 -65 -70 -75 -80 -85 -90 -40 - TEMPERATURE (°C) ON LOW-VOLTAGE THRESHOLD vs. TEMPERATURE 1.265 ...
Page 7
Positive High-Voltage, Hot-Swap Controller PIN NAME On/Off Control Input used to implement the undervoltage lockout threshold and resets the part after fault condition (see the Detailed Description section). Power-Good Comparator Input. Connect a resistive divider ...
Page 8
... Positive High-Voltage, Hot-Swap Controller PWRGD SENSE CC MAX5932 V GEN P CHARGE REF PUMP GEN 0.5V GATE DRIVER OPEN DRAIN 1.233V UNDERVOLTAGE V CC LOCKOUT 8.3V LOGIC 0.5V 1.233V Functional Diagram AND GATE V P 80µA TIMER 3µA GND ...
Page 9
... The device allows for the safe insertion and removal of circuit cards into live backplanes without causing glitches on the backplane power-supply rail. During startup the MAX5932 acts as a current regula- tor using an external sense resistor and MOSFET to limit the amount of current drawn by the load. ...
Page 10
... For a 0.025Ω sense resistor, the current limit is set at (Figure 6). 1.88A and folds back to 480mA when the output is shorted to ground. The MAX5932 also features a variable overcurrent response time. The time required to regulate Q1’s drain current depends on: • Q1’s input capacitance. • ...
Page 11
... PWRGD to control an active-low enable-input power module. Signal inversion is accom- plished by transistor Q2 and R7 or use MAX5933. The MAX5932 is 100% tested and guaranteed to be safe from damage with supply voltages up to 80V. However, spikes above 85V may damage the device. ...
Page 12
... If the MAX5932 die temperature reaches +150°C, an 10V/div overtemperature fault is generated result, GATE OUTPUT goes low and turns the external MOSFET off. The 50V/div MAX5932 die temperature must cool down below +130°C before the overtemperature fault condition is removed CMPZ5248B ...
Page 13
... ON close to the device and keep traces to V short. A 0.1µF capacitor from ON to GND also helps reject induced noise. addresses these issues. External MOSFET must be thermally coupled to the MAX5932 to ensure proper thermal shutdown operation 60 80 (see Figure R3 ...
Page 14
... INC. TRANSISTOR COUNT: 1573 PROCESS: BiCMOS SENSE R SENSE Q1 0.01Ω IRF530 R5 10Ω 5% 0.1µ SENSE GATE MAX5932 5 3 TIMER PWRGD GND 4 Chip Information Typical Application Circuit CMPZ5248B R6 R3 1kΩ 59kΩ 24kΩ 10nF R4 3.57kΩ ...
Page 15
Positive High-Voltage, Hot-Swap Controller (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information TOP VIEW FRONT VIEW Maxim cannot ...